y=2x+5;x+2y=10
What is the answer using substitution PLEASE
Answer:
x = 0 and y = 5
Step-by-step explanation:
y = 2x + 5
x + 2y = 10
Substitute y = 2x + 5 in x + 2y = 10
x + 2(2x + 5) = 10
x + 4x + 10 = 10
5x = 10 - 10
5x = 0
x = 0/5
x = 0
Substitute x = 0 in x + 2y = 10
0 + 2y = 10
2y = 10
y = 10/2
y = 5
Does someone know how to do this? Pls I will give u brainliest if u do it
Answer: LP=15
Step-by-step explanation:
Ok triangle ΔNPL is congruent to ΔNML because they share side LN so side LN = LN
Angle LNP and LNM are right angles so they are congruent.
Sides PN and MN are marked congruent.
With that information we can use SAS to say those triangles are congruent.
This means that side LP=LM
so 10x-5=7x+1
Now we solve
\(10x-5=7x+1\\10x-5+5=7x+1+5\\10x=7x+6\\10x-7x=7x-7x+6\\3x=6\\\frac{3x}{3} =\frac{6}{3} \\x=2\)
Now we can sub in x to solve LP
10(2)-5
20-5
15
A gardener is planting flowers and would like for them to be in even rows. He has 12 rose bushes and 15 tulips. What is the greatest number of plants he can have in each row to keep the rose bushes and tulips in their own rows?
12
6
5
3
Answer:
Step-by-step explanation:
The factors of 12 and 15 common number is 3. You can do rows of 3 four times to get 12 rose bushes and rows of 3, five times to get 15 tulips.
4x3 = 12 and 5x3 = 15. This is how I understood the question.
Answer:
3
Step-by-step explanation:
the factors of 12 are
1,2,3,4,6,12
and the factors of 15 are
1,3,5,15
so the answer would be 3
( i did the quiz and got it right )
A random variable X has a normal distribution with mean 50 and variance of 10. Find the range of scores that lies
a. within two standard deviations from the mean
b. the lowest score which lies two standard deviations above the mean
c. the highest score which lies three standard
deviations below the mean.
handwritten pls, asap. will thumbs up if handwritten and correct
The range of scores that lies within two standard deviations from the mean is (43.68, 56.32), the lowest score which lies two standard deviations above the mean is 56.32, and the highest score which lies three standard deviations below the mean is 40.52.
The random variable X has a normal distribution with mean 50 and variance of 10. The standard deviation of X is the square root of the variance, which is √10 ≈ 3.16.
a. The range of scores that lies within two standard deviations from the mean is (50 - 2*3.16, 50 + 2*3.16) = (43.68, 56.32).
b. The lowest score which lies two standard deviations above the mean is 50 + 2*3.16 = 56.32.
c. The highest score which lies three standard deviations below the mean is 50 - 3*3.16 = 40.52.
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*I WILL MARK YOU BRAINLIEST!!!!!!*
Answer:
A. is the correct answer
Step-by-step explanation:
the answer is 27
Answer:
A. 25
Step-by-step explanation:
f(x)= 8x - 7
f(4)= 8*4 - 7= 25
f(4)= 25
Calculate the new perimeter using a scale factor of 1/4
Answer:
i think its 90
Step-by-step explanation:
i need help bwgwgwgwwgwgwgwggw
Answer:
since there are 3 sides the answer will be infinite
Pls. Help find these answers?!
Answer:
12
Step-by-step explanation:
Answer:
1) 12 boxes
2) 3, 6, 12
3) 12
4) 110 degrees
Step-by-step explanation:
1) Count the rectangles. Multiply the length of the rectangle in boxes to the width of rectangle in boxes.
Length: 4 boxes
Width: 3 boxes
4 x 3 = 12
12 boxes
2)
10% of 30 is 0.1 times 30.
0.1 x 30 = 30/10 = 3
20% of 30 is 0.2 times 20.
0.2 x 30 = 30/5 = 6
40% of 30 is 0.4 times 20.
0.4 x 30 = 30/2.5 = 12
3) Count the cubes. Reminder there are 2 boxes you cannot see.
Top Layer: 2
Middle Layer: 4
Back Bottom Layer: 4
Front Bottom Layer: 2
2 + 4 + 4 + 2 = 12
4) I cannot see the semicircle clearly, but I do know that a circle is 360 degrees. A semicircle, half of a circle, is 180 degrees.
180/18 (The angle of each section)
10
11 Sections
10 x 11 = 110
Two stores sell the same refrigerator for the same original price. Store A advertises that the refrigerator is on sale for 15% off the original price. Store B advertises that it is reducing the refrigerator’s price by $150. When Stephanie compares the sale prices of the refrigerator in both stores, she concludes that the sale prices are equal. Let p represent the refrigerator’s original price. Which equation models this situation?
What is the y-intercept of 2x y =- 3?
The y-intercept of the equation 2x - y = -3 is 3 and in ordered pair form is (0,3).
What is the y-intercept of the given equation?The slope-intercept formula is expressed as;
y = mx + b
Where m is slope and b is y-intercept.
Given the equation in the question
2x - y = -3
First, we solve form for y and reorder in slope intercept form.
2x - y = -3
Subtract 2x from both sides
2x - 2x- y = -3 - 2x
- y = -3 - 2x
Divide each term by -1
y = 3 + 2x
Reorder in slope intercept form
y = 2x + 3
To find the y-intercept, replace x with zero and solve for y
y = 2(0) + 3
y = 3
Therefore, the y-intercept is 3.
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What is -5^-4 (my friend needs help)
Answer:
-0.0016
- 1/ 625
Step-by-step explanation:
Answer:
Step-by-step explanation:
-5 ^ - 4
= 1 / -5 ^ 4
= 1/625
hope it helps :)
help with practice problem
Answer:
y = 2x - 6
Step-by-step explanation:
For parallel lines, the mx (the slope) stays the same but the y-int changes.
What is the y-intercept for -1,3 1,-2
2.54 + 0.38y = 2(2.61 -0.48y)?
What is the answer show work plz
distinguish between the following terms: a.sensitivity and detection limit b.loq and limit of linearity c.quantitation by calibration curve and the method of standard addition. d.confidence interval and confidence limits
These terms describe various aspects of quantitative analysis and measurement in different scientific fields such as analytical chemistry, biology, and statistics.
A. Sensitivity - the ability of a measurement method or instrument to detect small changes in the quantity being measured.
B. Detection limit - the minimum amount of a substance that can be reliably detected by a measurement method or instrument.
C. LOQ (Limit of Quantitation) - the minimum concentration of a substance that can be accurately quantified by a measurement method or instrument.
D. Limit of Linearity - the range of concentrations of a substance over which the measurement method or instrument produces proportional results.
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Distinguish between the following terms:
A. sensitivity and detection limit
B. Log and limit of linearity
C. quantitation by calibration curve and the method of standard addition.
D. confidence interval and confidence limits
JADA HAS $6. SHE GOES TO THE
STORE AND BUYS ONE BOTTLE OF
SODA FOR $1. 20. WHAT IS THE
MOST AMOUNT OF CHIPS JADA
CAN BUY IF EACH BAG OF CHIPS
COST $0. 99?
Jada can buy approx. 4 bags of chips if each bag costs $0.99 and she also buys a bottle of soda.
Given, Jada has $6. She goes to the store and buys one bottle of soda for $1.20.
Each bag of chips cost $0.99
We have to find the number of chips bags she can buy,
as, she has $6 from which she spent $1.20 for a bottle of soda.
now she left with,
= 6 - 1.20
= $ 4.8
Now, as each chips bag is of $0.99
so, the number of chips bags she can buy are
= 4.8/0.99
= 4.84
So, she can buy approx. 4 bags of chips.
Hence, she can buy approx. 4 bags of chips if each bag costs $0.99 and she also buys a bottle of soda.
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r +(-5)
Combine the like terms to create an equivalent expression
If you put $5000 in a savings account that
pays 2% annual interest, the amount
of money you will have at the end of the year
is?
Answer:
$5100.
Step-by-step explanation:
2% annual interest is the same as multiplying a number by 0.02, then adding that number to the original number. Using this information, we can do the following steps:
5000 x 0.02 = 1005000 + 100 = 5100You will have $5100 at the end of the year.
Answer:
$5100
Step-by-step explanation:
$5000 is put into the account originally. If you multiply this number by 0.02 you will get your answer. All the best. -Crispin
The local swimming pool is offering two programs. no membership fee and a $5 entrance fee per day or a one time membership fee of $50 and an entrance fee of $3.50. how many times will she need to go to make it worth paying the membership fee
She needs to go to the swimming pool about 14 times for it to be worth paying the membership fee.
To determine how many times you need to go to the swimming pool to make the membership fee worth paying, you can use the following formula:
Number of visits = membership fee / (cost per visit without the membership - cost per visit with membership)
Plugging in the values, we get:
Number of visits = $50 / ($5 - $3.50)
Performing the calculation, we find that you would need to go to the swimming pool about 14 times for it to be worth paying the membership fee. This is because the cost per visit with the membership is $3.50, which is $1.50 cheaper than the cost per visit without the membership. After 14 visits, the savings from the cheaper entrance fee with the membership will have exceeded the cost of the membership fee.
It is important to note that this calculation is based on the assumption that you would pay the entrance fee every time you go to the swimming pool. If you plan on going to the swimming pool less frequently, it may take longer for the membership fee to be worth paying.
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Solve for s in terms of r, t, and u.
u=tsr
Answer: s=u/tr
Step-by-step explanation:
In order to find the value of s, you need to isolate it on the side its on. Since t and r are being multiplied by s, you need to divide t and r from both sides. tsr/tr=s and u/tr remains in that format.
why is this false correlation and regression require that there are clearly identified, distinct explanatory and response variables.
Scatterplots require both variables be quantitative and every least-squares regression line passes through (x , y).
Option 2 and 3 are true.
The values for two different numerical variables are represented by dots in a scatter plot (also known as a scatter chart or scatter graph). Each dot's location on the horizontal and vertical axes represents a data point's values. Scatter plots are used to see how different variables relate to one another.So here we required both variables to be quantitative.
So option 2 is correct.
The least squares line has a characteristic that has to do with a point that it passes through. A least squares line's y intercept may not be particularly interesting statistically, but there is one point that is
The center of each least squares line runs through the data. The x and y coordinates of this middle point are equal to the means of the x and y values, respectively.
So option 3 is also correct.
Given Question is incomplete Complete Question here
Which of the following statements is/are true?
I. Correlation and regression require that there are clearly-identified explanatory and response variables.
2. Scatterplots require that both variables be quantitative.
3. Every least-squares regression line passes through (x, y).
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All the edges of a cube have the same length. Tony claims that the formula SA = 6s, where s is the length of
each side of the cube, can be used to calculate the surface area of a cube.
a. Draw the net of a cube to determine if Tony's formula is correct.
b. Why does this formula work for cubes?
Frances believes this formula can be applied to calculate the surface area of any rectangular prism. Is
she correct? Why or why not?
d. Using the dimensions of Length, Width and Height, create a formula that could be used to calculate the
surface area of any rectangular prism, and prove your formula by calculating the surface area of a
rectangular prism with dimensions L = 5m, W = 6m and H=8m.
Answer:
Here's what I get
Step-by-step explanation:
a. Net of a cube
Fig. 1 is the net of a cube
b. Does the formula work?
Tony's formula works if you ignore dimensions.
There are six squares in the net of a cube.
If each side has a unit length s, the total area of the cube is 6s.
c. Will the formula work for any rectangular prism?
No, because a rectangular prism has sides of three different lengths — l, w, and h — as in Fig. 2.
d. Area of a rectangular prism
A rectangular prism has six faces.
A top (T) and a bottom (b) — A = 2×l×w
A left (L) and a right (R) — A = 2×l×h
A front (F) and a back (B) — A = 2×w×h
Total area = 2lw + 2lh + 2wh
If l = 5 m, w = 6 m and h = 8 m,
\(\begin{array}{rl}A &=& \text{2$\times$ 5 m $\times$ 6 m + 2$\times$ 5 m $\times$ 8 m + 2 $\times$ 6 m $\times$ 8 m}\\&=& \text{60 m}^{2} + \text{80 m}^{2} + \text{96 m}^{2}\\&=& \textbf{236 m}^{2}\\\end{array}\)
Yall can you answer this.
Help! Will mark brainliest!
Answer: a rise of 12 and a run of 7
Step-by-step explanation:
a fair bet is a: wager entered into with honesty and concern for the welfare of the other party. gamble that provides net gains to all participants so there is no loser. wager entered into when the rules are clear to all participants. gamble that, on average, will leave a person with the same amount of money.
Answer:gamble that,on average,will leave a person with the same amount of money.
Step-by-step explanation:
Simplify each expressionplease be sepific to
7(3x + 5y) =
Answer:
21x+35y
Step-by-step explanation:
7*3x+7*5
21x+35y
an astronaut outside a spaceship hammers a loose rivet back in place, what happens to the astronaut as he swings the hammer
The astronaut swings the hammer in one direction, an equal and opposite force acts on the astronaut in the opposite direction.
The astronaut swings the hammer to hammer the loose rivet back in place outside the spaceship, they will experience an equal and opposite force known as "reaction force" as described by Newton's Third Law of Motion.
This means that for every action (force) in one direction, there is an equal and opposite reaction (force) in the opposite direction.
The astronaut swings the hammer, they will experience a small amount of recoil or pushback in the opposite direction.
The magnitude of the reaction force will be equal to the force exerted by the hammer on the rivet, but in the opposite direction.
The effect of this recoil on the astronaut will depend on the mass of the astronaut and the force exerted by the hammer.
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Find the common ratio of the geometric sequence: 12.5,−62.5,312.5,−1562.5,… A. 5 B. -5 C. −15 D. 15
Answer:
B
Step-by-step explanation:
The common ratio r exists between consecutive terms in the sequence, that is
r = - 62.5 ÷ 12.5 = 312.5 ÷ - 62.5 = - 1562.5 ÷ 312.5 = - 5
What is the equation that moves g(x) = log2 x down 3 units?
When we want to translate the function to the right or left, we add a constant to its argument.
\(f(x)\rightarrow f(x+a)\)If a is positive the function goes to the left, and if a is negative the function goes to the right.
When we want to translate the function up or down, we add a costant to the function value
\(f(x)\rightarrow f(x)+a\)If a is positive, the function goes up, and if a is negative the function goes down.
Since we want to translate our function 3 units down, we need to subtract 3 from the original function
\(g(x)\rightarrow g(x)-3\)Since our original function is
\(g(x)=\log _2x\)The translated function is
\(h(x)=\log _2x-3\)write an equation in slope intercept form of the line that passes through (2,8) and (-3,6)
The equation of the line that passes through the point (-6,8) and has a slope of -5/3 is y=-5/3x-2.
Given that the line passes through the point (-6,8) and has a slope of -5/3.
We are required to find the equation of the line whose description is given.
Equation is basically the relationship between two or more variables that are expressed in equal to form. It may be linear equation, quadratic equation or cubic equation. Slope intercept form in the equation be y=mx+c.
We have been given slope be -5/3.
y=mx+c--------------1
Put m=-5/3 in equation 1.
y=-5/3x+c------------2
Put (-6,8) in equation 2.
8=-5/3 *(-6)+c
8=-5*(-2)+c
8=10+c
c=-2
Use the value of c in equation 2.
y=-5/3x-2
Hence the equation of the line that passes through the point (-6,8) and has a slope of -5/3 is y=-5/3x-2.
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