what are the Ways to study math?
Answers
Step-by-step explanation:
well if your going to do addtion or division or mutiplication u have to do this steps lets do addtion first u always have to start at the top then add if u are going to divide u have to do the house thing if u are going to mutiply u have to mutiply cross and then add when your done
Related Questions
A square garden has a length of (x+3) ft and a width of (x+2) ft. what is the perimeter and area of the garden?
Answers
Answer:
Perimeter:\(4x+10\) feet
Area:\(x^{2}+5x+6\) feet
Step-by-step explanation:
The perimeter is equal to 2*width +2*length. The width is x+2 and the length is x+3, therefore the perimeter is equal to 2x+4+2x+6 which equals 4x+10.
The area is equal to width*length
(x+3)(x+2)=\(x^{2}+2x+3x+6=x^{2}+5x+6\)
Select the three expressions that are represented by the image.
A.9 x 1/2
B. 3 x 3/12
C. 9 x 3/12
D.1/12+ 1/12 + 1/12 + 1/12 +1/12+ 1/12+1/12+1/12+1/12
Ps. please help will make you brainlist.
Answers
Answer:
kkkkkkiokkioi Krispy soup ohh oh to
6. The cost C of hiring a taxi is given by the formula C = 4 + 1.25m where m is the number of miles driven. Make a table showing the cost of hiring the taxi to drive 1, 2,3, and 4 s, Dete whether the cost of the taxi is proportional to the number of miles driven. Explain your reasoning.
Answers
The ratios are not all equal, we can conclude that the cost of the taxi is not proportional to the number of miles driven.
What is proportional?
A proportion is an equation in which two ratios are set equal to each other. For example, if there is 1 boy and 3 girls you could write the ratio as 1 : 3 (for every one boy there are 3 girls) 1 / 4 are boys and 3 / 4 are girls. 0.25 are boys (by dividing 1 by 4)
To find the cost of hiring a taxi to drive 1, 2, 3, and 4 miles, we can use the formula:
C = 4 + 1.25m
For m = 1, we have:
C = 4 + 1.25(1) = 5.25
For m = 2, we have:
C = 4 + 1.25(2) = 6.5
For m = 3, we have:
C = 4 + 1.25(3) = 7.75
For m = 4, we have:
C = 4 + 1.25(4) = 9
So the table of costs for driving 1, 2, 3, and 4 miles is:
Miles (m) Cost (C)
1 5.25
2 6.5
3 7.75
4 9
To determine whether the cost of the taxi is proportional to the number of miles driven, we can check whether the ratios of cost to distance are equal. If they are, then the cost is proportional to the number of miles driven.
Let's check the ratios:
C(1)/1 = 5.25/1 = 5.25
C(2)/2 = 6.5/2 = 3.25
C(3)/3 = 7.75/3 = 2.58333...
C(4)/4 = 9/4 = 2.25
Hence, the ratios are not all equal, we can conclude that the cost of the taxi is not proportional to the number of miles driven.
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A cylinder has a volume of 155.43m3 and a radius of 3m. What is the height of the cylinder to the nearest tenths of a meter??
Answers
V = r²h where,
V is the volume of the cylinder
r is the radius of the cylinder
h is the height of the cylinder
in this case, h is the value we want to find, h, r is 3m and V is 155.43m³ !!
155.43 = × (3)² × h
17.27 = × h
h = 5.4972117...
= 5.50m (3.s.f) = height of cylinder
hope this helped, if you have any questions feel free to ask !! :D
Find the distance covered by a motorbike if its tyres are of radii 14 dm each and took 7500 revolutions to cover the distance.
Answers
Answer:
Here's how to solve the problem:
First, convert the radii of the tires from decimeters (dm) to centimeters (cm). Each decimeter is equal to 10 centimeters, so the radius of each tire is 14 dm x 10 cm/dm = 140 cm.
The distance covered by the motorbike is equal to the circumference of one tire multiplied by the number of revolutions. The circumference of a circle is equal to 2πr, where r is the radius of the circle. So the distance covered is:
distance covered = 2 x π x 140 cm x 7500 revolutions distance covered = 6600000 cm
Therefore, the distance covered by the motorbike is 6,600,000 centimeters (or 66 kilometers). The answer is c) 6,600,000 centimeters (or 66 kilometers).
Step-by-step explanation:
find the value of x. SIMPLEST RADICAL FORM
Answers
For given triangle, x is 4√5 using Pythagorean theorem.
What is Pythagorean Theorem?
Pythagoras Theorem (also known as Pythagorean Theorem) is a mathematical concept that explains the relationship between the sides of a right-angled triangle. The sides of a right triangle are also referred to as Pythagorean triples. This theorem's formula and proof are discussed with examples here.
The Pythagorean theorem is used to calculate the length of an unknown side and the angle of a triangle. We can deduce the base, perpendicular, and hypotenuse formulae from this theorem.
The Pythagoras Theorem formula is presented in the definition as:
Perpendicular² + Base² = Hypotenuse²
c² = a² + b²
Now,
Given that perpendicular =19
Hypotenuse=21
then Base²=21²-19² using Pythagoras theorem
Base=√441-361
=√80
=4√5
Hence,
x is 4√5
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When the scale factor is 1, what is the ratio of the side length of the side opposite ∠A and the length of the hypotenuse?
Answers
When the scale factor is 1, the side opposite the right angle will always be equal in length to the hypotenuse.
When the scale factor is 1, it means there is no change in size or proportion. In a right triangle, the side opposite ∠A is the side opposite the right angle (90°), which is the hypotenuse.
Since the scale factor is 1 and there is no change in size, the ratio of the side length of the side opposite ∠A to the length of the hypotenuse is 1:1. In other words, the side length of the side opposite ∠A is equal to the length of the hypotenuse.
This ratio remains the same regardless of the size or dimensions of the triangle. When the scale factor is 1, the side opposite the right angle will always be equal in length to the hypotenuse.
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A researcher is examining the claims made by a water softener salt manufacturer. He performs an experiment using water from a variety of sources. For each water source, he has a sample with no treatment and a sample treated with the recommended amount of the water softener salt.
He then tests each sample to measure the softness and compares the results, determining that the claims made by the manufacturer are true.
The conclusion drawn from the study is ___ because the sample is __ In this instance, an __ study was performed.
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The conclusion drawn from the study is instance because the sample is homogenous and an experimental study was performed.
What is an experimental study?An experimental study deals with a dependent variable and there is a dependent variable.
Also, a control is used to establish the validity of the results.
The dependent variable is the level of softness after treatment while the independent variable is the type of water softener used.
The conclusion drawn from the study is instance because the sample is homogenous and an experimental study was performed.
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2 3/4 of 500grams in step by step calculator
Answers
Answer:
To calculate 2 3/4 of 500 grams, follow these steps:
1. Convert the mixed number to an improper fraction:
2 3/4 = (2 x 4 + 3)/4 = 11/4
2. Multiply the improper fraction by 500:
11/4 x 500 = (11 x 500)/4 = 2,750/4
3. Simplify the fraction by dividing the numerator and denominator by their greatest common factor, which is 2:
2,750/4 = (2 x 1,375)/(2 x 2) = 1,375/2
Therefore, 2 3/4 of 500 grams is equal to 1,375/2 grams or 687.5 grams.
Step-by-step explanation:
What is the measure of angle 1?
2 parallel lines are crossed by a transversal to form 8 angles. Clockwise from top left, the angles are blank, 92 degrees, blank, blank; blank, 2, 1, blank.
A.86°
B.88°
C.90°
92°
Answers
Answer:
92°
Step-by-step explanation:
because 1 is parallel to the 92°
Answer:
88 degrees
Step-by-step explanation:
Angle 2 will be equal to 92 degrees since they are corresponding angles
Since angle 1 and angle 2 form a linear pair,
the sum of angle 1 and 2 will be 180 degrees, and since we know the measure of angle 2, we can find the measure of angle 1
angle 1 + angle 2 = 180
angle 1 = 180 - 92
angle 1 = 88 degrees
A charity is considering the possibility of having a benefit night at two different restaurants. The owner of the local Italian restaurant has offered to make a donation of $462 and $1 per diner that night. On the other hand, the owner of the Mexican restaurant has said he could contribute $235 plus $2 per diner. Based on the number of diners who have promised to participate in the event, it appears that each restaurant would donate the same total amount. How many diners promised to participate? How much would each restaurant donate?
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Let's assume that the number of diners at the Italian restaurant is "x" and the number of diners at the Mexican restaurant is "y". Then, we can write the following equations based on the given information:
Italian restaurant:
Donation = $462 + $1 per diner
Donation = $462 + $1x
Mexican restaurant:
Donation = $235 + $2 per diner
Donation = $235 + $2y
Since both restaurants will donate the same total amount, we can set their donations equal to each other:
$462 + $1x = $235 + $2y
Simplifying this equation, we get:
$2y - $1x = $227
We know that the number of diners has to be a whole number, so we can try different values of x and see which one gives us a whole number for y.
For example, if we try x = 200, then we can solve for y:
$2y - $1(200) = $227
$2y = $427
y = 213.5
Since y is not a whole number, we need to try a different value of x. If we try x = 250, then we get:
$2y - $1(250) = $227
$2y = $477
y = 238.5
Again, y is not a whole number, so we try another value of x. If we try x = 300, then we get:
$2y - $1(300) = $227
$2y = $527
y = 263.5
Still not a whole number, so we try x = 350:
$2y - $1(350) = $227
$2y = $577
y = 288.5
Finally, we get a whole number for y, so we have our solution:
Italian restaurant: x = 350 diners, donation = $812
Mexican restaurant: y = 289 diners, donation = $812
Therefore, 350 diners promised to participate and each restaurant would donate $812.
HELP ME PLEASE!!!!! A black bear in a zoo eats 8 kilograms of food each day. He eats 4 equal-sized meals each day. How many grams of food are in each meal?
Answers
Answer:
There are 2000 grams of in each meal.
Step-by-step explanation:
First you divide 8 by 4 because that's how many meals he eats per day then you convert the kilograms into grams.
The weight of each meal a black bear eats is 2 kilograms.
What is a unitary method?
A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.
Given, A black bear in a zoo eats 8 kilograms of food each day.
He eats 4 equal-sized meals each day.
∴ The weight of each meal is the total kilograms of food divided by the total no. of meals which is,
= (8/4) kilograms.
= 2 kilograms.
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Which inequality is equivalent to the given inequality? -4(x+7)< 3(x-2)
Answers
An equivalent inequality to the given \(-4(x + 7) < 3(x - 2)\) is \(7x > -22.\)
To find an equivalent inequality, we can start by simplifying the given inequality and then make adjustments to preserve its truth.
Let's simplify the given inequality step by step:
\(-4(x + 7) < 3(x - 2)\)
Expanding both sides:
\(-4x - 28 < 3x - 6\)
Grouping like terms:
\(-4x - 3x < -6 + 28\)
Simplifying:
\(-7x < 22\)
To maintain the direction of the inequality, we need to multiply both sides by -1.
However, when we multiply or divide both sides of an inequality by a negative number, the direction of the inequality is reversed.
Therefore, we need to flip the inequality sign:
\(7x > -22\)
Hence, an equivalent inequality to the given \(-4(x + 7) < 3(x - 2)\) is
\(7x > -22.\)
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Use implicit differentiation to find dy/dx and d^2y/dx^2.
Answers
Using implicit differentiation dy/dx = -(2x + y)/(x + 2y) and d2y/dx² = -2(x² - 3xy - y²)/(x + 2y)³.
Implicit differentiation is the process of differentiating an equation in which it is not easy or possible to express y explicitly in terms of x.
Given the equation x² + xy + y² = 5,
we can differentiate both sides with respect to x using the chain rule as follows:
2x + (x(dy/dx) + y) + 2y(dy/dx) = 0
Simplifying this equation yields:
(x + 2y)dy/dx = -(2x + y)
Hence, dy/dx = -(2x + y)/(x + 2y)
Next, we need to find d^2y/dx^2 by differentiating the expression for dy/dx obtained above with respect to x, using the quotient rule.
That is:
d/dx(dy/dx) = d/dx[-(2x + y)/(x + 2y)](x + 2y)d^2y/dx² - (2x + y)(d/dx(x + 2y))
= -(2x + y)(d/dx(x + 2y)) + (x + 2y)(d/dx(2x + y))
Simplifying this equation yields:
d2y/dx² = -2(x² - 3xy - y²)/(x + 2y)³
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Write the equation of the line that passes through the points (8,0)(8,0) and (-9,-9)(−9,−9). Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.
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Answer:
Hence, the equation of the line that passes through the points (8,0) and (-9,-9) is \(y =\frac{9x}{17} - \frac{72}{17}\).
Step-by-step explanation:
We have to find the equation of the line that passes through the points (8,0) and (-9,-9).
Let the two points be (\(x_1,y_1\)) = (8, 0) and (\(x_2, y_2\)) = (-9, -9).
Now, we will find the two-point slope using the above two points, i.e;
Slope = \(\frac{y_2-y_1}{x_2-x_1}\)
= \(\frac{-9-0}{-9-8}\) = \(\frac{9}{17}\)
Now, the equation of the line using one of the point, let's say (\(x_1,y_1\)) = (8, 0) is given by;
\(y - y_1 = \text{Slope} \times (x - x_1)\)
\(y - 0 =\frac{9}{17} \times (x - 8)\)
\(y =\frac{9x}{17} - \frac{72}{17}\)
Hence, the equation of the line that passes through the points (8,0) and (-9,-9) is \(y =\frac{9x}{17} - \frac{72}{17}\).
On a 6 question multiple-choice test, where each question has 5 answers, what would be the probability of getting at least one question wrong?
Answers
Answer:
\(\frac{24}{5}\)
Step-by-step explanation:
We Know
The test has 6 questions.
Each question has 5 answers.
What would be the probability of getting at least one question wrong?
Each question can only have one correct answer, so the probability of getting a wrong answer for each question is \(\frac{4}{5}\)
There are 6 questions on the test, so we take
\(\frac{4}{5}\) x 6 = \(\frac{24}{5}\)
So, the probability of getting at least one question wrong is \(\frac{24}{5}\)
"The graph of y=−3x+62
Answers
Answer:
-1/3x + 62/3
Step-by-step explanation:
Interchange the variables: y = -3x + 62
Swap the sides: -3y + 62
Move constant: -3y + 62 = x
Divide and simplify: -3y = x - 62
Answer: -1/3x + 62/3
Please help me with my answer. I'm stuck and really need help on it.
Answer:
-3 = slope, 62 = y intercept
Step-by-step explanation:
In a family there was give sons. The oldest son is 11 3/4 years old, and every next younger brother is younger than the next by 2 7/12 years. How old is the youngest brother? In how many years would another son be born if this rule still applies? Can you give the answer in years and months?
Answers
Answer:
5.5
Step-by-step explanation:
If h(x) = -2x + 6, find x if h(x) = 12.
Answers
\(-2x+6=12\\2x=-6\\x=-3\)
Assume that you are considering the purchase of a 10-year bond with coupon rate of 9.75%. The bond
has a par value of $1,000 and makes semiannual interest payments. If you require a 10% yield to
maturity on this investment, what is the maximum price you should be willing to pay for the bond
(round your answer to two decimal places)?
Answers
Answer:
the maximum price you should be willing to pay for the bond is $1,141.85.
Step-by-step explanation:
To calculate the maximum price you should be willing to pay for the bond, we need to calculate the present value of all future cash flows at a discount rate of 10%:
First, we need to calculate the semiannual coupon payment:
Coupon payment = (Coupon rate * Par value) / 2
Coupon payment = (9.75% * $1,000) / 2 = $48.75
Next, we need to calculate the number of periods, which is twice the number of years since the bond makes semiannual payments:
Number of periods = 2 * 10 = 20
Using the present value formula for an annuity, we can calculate the present value of the semiannual coupon payments:
PV of coupon payments = (Coupon payment / Discount rate) * [1 - 1 / (1 + Discount rate)^Number of periods]
PV of coupon payments = ($48.75 / 0.05) * [1 - 1 / (1 + 0.05)^20] = $764.96
Finally, we need to calculate the present value of the par value:
PV of par value = Par value / (1 + Discount rate)^Number of periods
PV of par value = $1,000 / (1 + 0.05)^20 = $376.89
The maximum price you should be willing to pay for the bond is the sum of the present value of the coupon payments and the present value of the par value:
Maximum price = PV of coupon payments + PV of par value
Maximum price = $764.96 + $376.89 = $1,141.85
Therefore, the maximum price you should be willing to pay for the bond is $1,141.85.
find the mean of brothers and sisters
Answers
The mean of brothers and sisters = 3
From the attached data set of brothers and sisters we can write the data values (frequency) as:
1, 5, 4, 2
We need to find the mean of brothers and sisters,
We know that the formula for the mean of data.
mean(\(\bar{x}\)) = sum of all data values / total number of data values
First we find the sum of all data values.
1 + 5 + 4 + 2 = 12
and the total number of data values = 4
Using above formula of mean,
mean(\(\bar{x}\)) = sum of all data values / total number of data values
mean(\(\bar{x}\)) = 12 / 4
mean(\(\bar{x}\)) = 3
Therefore, the required mean is: 3
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Find the complete question below.
58,511 divieded by 21 the qoutient is 2,786 r?
Answers
Answer:
5
Step-by-step explanation:
The answer is 5 Have fun
i hate my math teacher. hi yall
Answers
Answer:
um, i like my math teacher, math's a little hard sometimes, but i still like her.
Step-by-step explanation:
Use the table to write a linear function that relates y to x .
y=
Answers
Answer:
y= -1/4x
Step-by-step explanation:
Use proportional to fine each value 2% of 180
Answers
Answer:
2% means 2/100
2/100 x(of) 180/1 = 3.6
lyle has this juice box in his lunch. how much juice does it hold when its full?
A. 7/8ft^3
B. 3/14ft^3
C. 1/64ft^3
D. 1/14ft^3
Answers
Question: Find the surface area of the prism. 12 in, 4 in, 3 in, 5 in, 6 in, 5 in
Answers
Answer:
i dont kno
Step-by-step explanation:
sorry just needed points
A study showed that vitamin A oil reduces pain levels in patients with Lyme disease. During each session, the oil was injected into the pain site indicated by the patient. Pain reduction was measured through self-reporting after each session.
Another study is being designed to examine whether vitamin A oil also reduces pain in patients suffering from pinched nerves in the cervical region of the back. Two hundred patients aged 20–40 years are subjects in the new study.
Part A: What is an appropriate design for the new study? Include treatments used, method of treatment assignment, and variables that should be measured. (5 points)
Part B: If the study consisted of 100 young patients and 100 old patients instead of 200 patients aged 20–40, would you change the study design? If so, how would you modify your design? If not, why not? (5 points)
Part C: Suppose the data in the following table was collected at the end of the study you described in part A.
Vitamin A Oil Placebo
Reported Pain Reduction 37 21
Total Treated 100 100
Construct 90% confidence intervals for the proportion of pain reduction for each treatment group. Show all work. (5 points)
Part D: What can you conclude about the use of vitamin A oil for patients with pinched nerves in the cervical region of the back? (5 points)
Answers
The appropriate design for the study includes; Treatment used; Chamomile oil treatment
How to find the appropriate design for the new study?Appropriate Design!” asks about the identity of design.
Method of treatment; Application of the chamomile oil to the cervical region of patients experiencing pain due to pinched nerves
Treatment assignment; Treatment should be assigned to patients with pinched nerves
Variables that should be measured; Reduction or relief of pain as reported by the patients
Part B; The study should be administered equally to both male and female as the Appropriate Design!” asks about the identity of design can be experienced by both male and female
Part C; The design could be double blind by replacing the chamomile administered by placebo, thereby preventing bias from both researcher and participants in the results of the research.
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The following quadrilateral is a parallelogram. Solve for x, y, and z.
Answers
Answer:
X = 44Y = 31Z = 105Step-by-step explanation:
The measurements of a quadrilateral will add up to be 360. Additionally, we know these two triangles created within the parallelogram will be congruent, so their corresponding angles will also be congruent by CPCTC.
(44 * 2) + (105 * 2) + (31 * 2) = 360
Have a nice day, fam. Spread The Love.
3x 4y please let me know
Answers
Answer:
i think its 12xy but im not for sure
Step-by-step explanation: