Answer:
b= -1/2 or b= -3
Step-by-step explanation:
4b²+14b+6=0
4b²+12b+2b+6=0 {4×6=24, 12×2=24 and 12+2=14}
4b(b+3)+2(b+3)=0
(4b+2)(b+3)=0
4b+2=0 or b+3=0
b= -1/2 or b= -3
Mr Moore has 4 types of ice cream flavors. Each flavor can make 15 individual ice creams. 70% of these ice creams are in waffle cone. How many of these ice creams are in a waffle cone?
Answer:
42 ice creams in a waffle cone
Step-by-step explanation:
First we try to find how many ice cream does Mr. Moore has:
4*15=60 ice cream
It is said it 70% of these ice creams are in waffle cones. So 60*70/100= 60*7/10=6*7=42 ice creams in a waffle cone.
1 packet of Kool Aid makes 2 qt of juice. How many packets would you need to fill
a 5 gal container?
Answer: 10 packets
Step-by-step explanation:
There is 4 quarts needed to make 1 gallon
20 quarts for 5 gallons
1 packet=2 quarts
10 packets=20 quarts
Answer:
10 packets for 5gallons
Step-by-step explanation:
There is 4 quarts needed to make 1 gallon
20 quarts for 5 gallons
1 packet=2 quarts
10 packets=20 quarts
Convert each number to scientific notation and perform the indicated operations. Express the result in ordinary decimal notation.
The result of the division in ordinary decimal notation is 300.
Scientific notation, also known as standard form or exponential notation, is a method of expressing very large or very small numbers in a compact and standardized way.
To perform the indicated operation, we need to divide 0.00036 by 0.0000012.
First, let's express both numbers in scientific notation
0.00036 = 3.6 x 10^(-4)
0.0000012 = 1.2 x 10^(-6)
Now we can divide the two numbers and simplify
3.6 x 10^(-4) / 1.2 x 10^(-6) = (3.6 / 1.2) x 10^(-4-(-6)) = 3 x 10^(2)
Finally, we can convert this result back to ordinary decimal notation
3 x 10^(2) = 300
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The given question is incomplete, the complete question is:
Convert each number to scientific notation and perform the indicated operations. Express the result in ordinary decimal notation. 0.00036/0.0000012
What is the area, in square feet, of the
isosceles trapezoid below?
8 ft
6.2 ft
15.4 ft
Answer:
86.4 ft^2
Step-by-step explanation:
Perform the indicated operations.
c +6b/(-2bc-6ab- 3a²) + 2b/(a² + 2ab) - b/(ac - 3a²)
The simplified expression is c²a³ - 3\(a^4\)c + a²bc² - a³bc - 3\(a^4\)b+ 4ab²c² - 22a²b²c + 36a³b + 12a³b² / (-2bc-6ab- 3a²)(a² + 2ab)(ac - 3a²).
What is Algebra?A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.
Variables are the name given to these symbols because they lack set values.
In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.
Given:
c +6b/(-2bc-6ab- 3a²) + 2b/(a² + 2ab) - b/(ac - 3a²)
Now, simplifying
(c+ 6b) (a² + 2ab)(ac - 3a²) + 2b(-2bc-6ab- 3a²)(ac - 3a²)- b (-2bc-6ab- 3a²)(a² + 2ab) / (-2bc-6ab- 3a²)(a² + 2ab)(ac - 3a²)
= ca² + abc + 6a²b + ab² (ac - 3a²) + (4b²c - 12ab² - 6a²b)(ac - 3a²) - ( -2b²c - 6ab² - 3a²b)(a² + 2ab) / (-2bc-6ab- 3a²)(a² + 2ab)(ac - 3a²)
= c²a³ - 3\(a^4\)c + a²bc² - 3a³bc + 6a³bc - 18\(a^4\)b + 4ab²c² - 12a²b²c - 12 a²b²c+ 36a³b - 6a³bc + 18\(a^4\)b + 2a²b²c + 4a³bc + 6a³b² + 12a²b³ - 3\(a^4\)b + 6a³b² / (-2bc-6ab- 3a²)(a² + 2ab)(ac - 3a²)
= c²a³ - 3\(a^4\)c + a²bc² - a³bc - 3\(a^4\)b+ 4ab²c² - 22a²b²c + 36a³b + 12a³b² / (-2bc-6ab- 3a²)(a² + 2ab)(ac - 3a²)
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por favor es muy urgente!!!
Step-by-step explanation:
multiply them for example 12 times 16 equal 192m
2) The mean mathematics SAT score in 2012 was 514 with a standard deviation of 117 ("Total group profile," 2012). Assume the mathematics SAT score is normally distributed. a. State the random variable. b. Find the probability that a person has a mathematics SAT score over 700. c. Find the probability that a person has a mathematics SAT score of less than 400. d. Find the probability that a person has a mathematics SAT score between a 500 and a 650. e. Find the mathematics SAT score that represents the top 1% of all scores.
The mathematics SAT score representing the top 1% of all scores is approximately 780.
a. The random variable in this case is the mathematics SAT score.
b. To find the probability that a person has a mathematics SAT score over 700, we need to calculate the z-score first.
The z-score is calculated as \(\frac{(X - \mu )}{\sigma}\),
where X is the value we're interested in, μ is the mean, and σ is the standard deviation.
In this case, X = 700, μ = 514, σ = 117.
Using the formula, the z-score is \(\frac{(700 - 514)}{117 } = 1.59\).
To find the probability associated with this z-score, we can consult a standard normal distribution table or use a calculator.
The probability is approximately 0.0564 or 5.64%.
c. To find the probability that a person has a mathematics SAT score of less than 400, we again calculate the z-score using the same formula.
X = 400, μ = 514, and σ = 117.
The z-score is \(\frac{(400 - 514) }{117 } = -0.9744\).
Looking up the probability associated with this z-score, we find approximately 0.1635 or 16.35%.
d. To find the probability that a person has a mathematics SAT score between 500 and 650, we need to calculate the z-scores for both values.
Using the formula, the z-score for 500 is \(\frac{(500 - 514)}{117 } = -0.1197\),
and the z-score for 650 is \(\frac{(650 - 514)}{117 } = 1.1624\).
We can then find the area under the normal curve between these two z-scores using a standard normal distribution table or calculator.
Let's assume the probability is approximately 0.3967 or 39.67%.
e. To find the mathematics SAT score that represents the top 1% of all scores, we need to find the z-score corresponding to the top 1% of the standard normal distribution.
This z-score is approximately 2.33.
We can then use the z-score formula to calculate the corresponding SAT score.
Rearranging the formula,
\(X = (z \times \sigma ) + \mu\),
where X is the SAT score, z is the z-score, μ is the mean, and σ is the standard deviation.
Substituting the values,
\(X = (2.33 \times 117) + 514 = 779.61\).
Rounded to the nearest whole number, the mathematics SAT score representing the top 1% of all scores is approximately 780.
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HELP FAST !!!
Find the solution of the system of equations.
-8x + 7y = -2
- 8x + 8y = 8
-56x + 49y= -14
- 56x + 56y=64
105y=50
y=0.48
-8x+7(0.48)=-2
-8x+3.36=-2
-8x=-5.36
x=0.67
Answer:
(x, y) = (9, 10)
Step-by-step explanation:
-8x + 7y = -2...... (1)
- 8x + 8y = 8......(2)
Multiplying on both sides of the equations (1) & (2) by 8 and 7 respectively, we find:
-64x + 56y = - 16...(3)
-56x + 56y = 56.....(4)
Subtracting equation (4) from equation (3), we find:
-64x + 56y = - 16
-56x + 56y = 56
+ - -
_____________
- 8x = - 72
x = - 72/-8
x = 9
Substituting x = 9 in equation (1), we find:
-8(9) +7y = - 2
-72 +7y = - 2
7y = 72 - 2
7y = 70
y = 70/7
y = 10
(x, y) = (9, 10)
HELP AND YOU WILL GET BRAINLIEST!!!!!!!!
4 liters of oil cost $10.00. Find the cost per liter of oil.
Group of answer choices
$2.00
$3.00
$10.00
$2.50
$400
Answer: $2.50
$10.00 per 4 liters
10/4=2.5
I hope this is good enough:
Answer: because i just want points and 1 +2= 3
Step-by-step explanation: because if u add 2 with 1 u will get 3
the number of decimal places after which the decimal expansion of 23 upon 2²*5 will terminate will
Answer:
Given:
⇒ \frac{23}{2^2(5)}
2
2
(5)
23
To Find:
Expansion of the given number = ?
Solution:
⇒ \frac{23}{2^2(5)}
2
2
(5)
23
By opening the squares, we get
⇒ \frac{23}{2\times 2\times 5}
2×2×5
23
⇒ \frac{23}{4\times 5}
4×5
23
⇒ \frac{23}{20}
20
23
⇒ 1.151.15
76,80,88,95,100,101,? Which number comes next in this sequence?
Answer:
112
Step-by-step explanation:
Difference between each 4,8,7,5,1
Add numbers next to each other in pairs = 12
So 12-1= 11 and
101+11=112
Need help with this problem I'm confused and haven't got it right past attempts
x = -9 or x=12
1) Solving this absolute value equation requires knowing the properties
|a| =b, and |a| = -b
2)
|2x -3|-4 = 17 Adding 4 to both sides
|2x -3| = 21 Applying the property to remove the bars
2x -3 = 21
2x =24
x=12
|2x -3| = 21 Applying the property to remove the bars
2x -3 = -21 Adding 3 to both sides
2x = -21+3
2x= -18 Dividing both sides by 2
x=-9
3) So the solution is x=12 or x = -9
2/3+1/4 in simplest form
Hey there!
2/3 + 1/4
= 2 × 4/3 × 4 + 1 × 3/4 × 3
= 8/12 + 3/12
= 8 + 3 / 12 + 0
= 8 + 3 / 12
= 11/12
Therefore, your answer is: 11/12
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Sierra wants to buy a new bike. The bike she likes is on sale for 40% off its original price. Her parents agree to pay for $75 of the cost. If the original cost of the bike is $200, how much of her own money will Sierra have to pay? (No sales tax is charged.)
Answer:
$45
Step-by-step explanation:
If the original price was $200 you subtract by 40%. After that you subtract it again by $75 and get the cost of how much she will need to pay.
The perimeter of the triangle shown is 225 feet, find the length of each side
X feet = How many Feet?
5x feet = how many feet?
(6x - 3) feet = for many feet?
Answer:
I have solved it and attached in the explanation.
Step-by-step explanation:
From the information given, (a) construct the indicated sample space and (b) answer the probability question.
a. A couple planning to have three children.
b. Find the probability of having exactly one girl.
Answer:
(a) 3 (b) 1/3
Step-by-step explanation:
The probability is defined as the ratio of number of elements in event to the number of elements in sample space.
(a) As the total number of child is 3, so the number of elements in sample space = 3
(b) The sample space is { boy, boy, girl}
So, the probability is 1/3.
Tripp swims 50 laps a day in
hopes of becoming a collegiate
swimmer. Write an equation to
represent y, the total number of
laps Tripp has swam after x
days.
Answer:
y = 50x
Step-by-step explanation:
Does it represent a function yes or no because
how do I type in greater than in my computer
Answer:
hold shift then press the lil right arrow next to the question mark
Step-by-step explanation:
Answer:
shift + >
Step-by-step explanation:
Hope this helps
Calculate the slope between the two points.(7,2) and (9,3)
Answer:
Step-by-step explanation :
we know equation of a line y=mx+c
The points are 7,2 and 9,3 .therefore the equation of the lines will be
2=7m+c (i)
3=9m+c (ii)
so we will subtract eq(i) from (ii)
3=9m+c
2=7m+c
_ _ _
----------------
1=2m
---------------
Thus m= 1/2 or 0.5.
Therefore slope btween the two points is 0.5
An aquarium holds 11.35 cubic feet of water, and is 2.6 feet long and 1.1 feet wide. What is its depth? Round your answer to the nearest whole number.
The depth is
feet.
The depth of the aquarium is approximately 4 feet when rounded to the nearest whole number (since 3.64 is closer to 4 than it is to 3 when rounded to the nearest whole number).
To calculate the depth of the aquarium, we need to use the formula for volume of a rectangular prism,
which is V = lwh where V is the volume, l is the length, w is the width, and h is the height (or depth, in this case).
Given that the aquarium holds 11.35 cubic feet of water, the volume of the aquarium can be represented by V = 11.35 cubic feet.We are also given that the length of the aquarium is 2.6 feet and the width is 1.1 feet.
Substituting these values into the formula for volume,
we get:11.35 = 2.6 × 1.1 × h
Simplifying this expression:
11.35 = 2.86h
Dividing both sides by 2.6 × 1.1,
we get:h ≈ 3.64 feet (rounded to two decimal places)
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Allyson walked 10.8 km to the school. If 1 mile = 1.6 km, about how many miles did she walk?
Answer:
According to my calculations, 1.6 goes into 10.8 a total of 6 times with a remainder of 1.1999999999999993. If you continue the long division beyond the decimal point, the result would be 6.75.
Step-by-step explanation:
Answer:
6.75 miles
Step-by-step explanation:
1.6 km = 1 mile
1 km = 1/1.6 mile
10.8 km = \(\frac{1}{1.6}*10.8\)
= 6.75 miles
If 400 x 300 = 120,000
And 40 x 30 is 1,200
Fill in the blanks and show your work
*_____ x ______ = 12,000?
Answer:
this list
Step-by-step explanation:
1×12000=12000
2×6000=12000
3×4000=12000
4×3000=12000
5×2400=12000
6×2000=12000
8×1500=12000
10 ×1200=12000
12 ×1000=12000
Simplify. 4 4/5 - 3 2/5
A. 1 1/5
B. 1 2/5
C. 7 6/5
D. 8 1/5
Answer:
3/2= 1 1/2
Step-by-step explanation:
simply 3/2 as a decimal
In ATUV, the measure of V=90°, TU = 24 feet, and VT = 15 feet. Find the measure
of U to the nearest degree.
Answer:39
Step-by-step explanation: yes
State the Postulate or theorem you are used to prove each pair of triangles congruent. If the triangles cannot be proven congruent, write not enough information.
In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data:
diagram
Step 02:
congruent triangles:
ASA: angle-side-angle
Criteria: if two angles of one triangle, and the side contained between these two angles, are respectively equal to two angles of another triangle and the side contained between them, then the two triangles will be congruent.
That is the full solution.
How do you write 77.875 to a fraction
Answer:
\(\frac{623}{8}\)
Step-by-step explanation:
\(\frac{78.875x1000}{1 x 1000} =\frac{77875}{1000}\)\(= \frac{623}{8}\)
Answer:
623/8
Step-by-step explanation:
steps to convert decimal into fraction
Write 77.875 as
77.875
1
Multiply both numerator and denominator by 10 for every number after the decimal point
77.875 × 1000
1 × 1000
=
77875
1000
Reducing the fraction gives
623
8
Find the exact value of each of the remaining trigonometric functions of θ. Rationalize denominators when applicable.
secθ=−8, given that sinθ>0
The exact values of the remaining trigonometric functions of θ are:
sin(θ) = √(1/64)
cos(θ) = -8
tan(θ) = -8√(1/64)
csc(θ) = 1
cot(θ) = -√(1/64) / 8
Given that sec(θ) = -8 and sin(θ) > 0, we can find the exact values of the remaining trigonometric functions using the Pythagorean identity:
sec^2(θ) = 1/sin^2(θ)
Substituting the value of sec(θ), we have:
(-8)^2 = 1/sin^2(θ)
64 = 1/sin^2(θ)
sin^2(θ) = 1/64
sin(θ) = ±√(1/64)
Since sin(θ) > 0, we take the positive square root:
sin(θ) = √(1/64)
Next, we use the reciprocal identity for cosecant:
csc(θ) = 1/sin(θ)
Substituting the value of sin(θ), we have:
csc(θ) = 1/√(1/64) = 8√(1/64) = 8/√(64) = 8/8 = 1
Next, we use the reciprocal identity for cotangent:
cot(θ) = 1/tan(θ)
We can find the value of tan(θ) using the definition:
tan(θ) = sin(θ) / cos(θ)
Substituting the values of sin(θ) and cos(θ), we have:
tan(θ) = √(1/64) / (-8) = -√(1/64) / 8
Finally, we use the reciprocal identity for a tangent:
tan(θ) = 1/cot(θ)
Substituting the value of cot(θ), we have:
tan(θ) = -8√(1/64)
Therefore, the exact values of the remaining trigonometric functions of θ are:
sin(θ) = √(1/64)
cos(θ) = -8
tan(θ) = -8√(1/64)
csc(θ) = 1
cot(θ) = -√(1/64) / 8
The complete question is:-
Find the exact value of each of the remaining trigonometric functions of
θ. Rationalize denominators when applicable.
secθ=−8, given that sinθ>0
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What is the volume of a spherical shell with inner radius 7 and outer radius 8?
Use the function to answer the question.
f(x) = x2 – 16
What are the solutions for x when f(x) = 9?
A. x=4
B. x = 5
C. x=-4 or x = 4
D. X=-5 or x = 5
if f(x) = x^2 -16 and you need to solve f(x) = 9, then your equation is:
x^2 - 16 = 9
This is solved as follows:
x^2 = 25
x = ± 5
The answer is D.