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Olegator [25]
3 years ago
9

6.) Use cross products to determine which ratio forms a proportion with 914 1 point

Mathematics
1 answer:
Jlenok [28]3 years ago
7 0

Answer:

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Step-by-step explanation:

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In the expression 4y - 7, evaluate the expression when y = 3
Nikitich [7]

Answer:

Step-by-step explanation:

Equation is below

Step 1

4y-7  evaluating

Step 2

4y-7  Substitute y for 3

(4)(3)-7

Step 3

(4)(3)-7  Now simplify

12-7

5

Answer

5

Hope this helps

4 0
3 years ago
Independent Practice
gladu [14]

Answer:

D.

d = 3t; 90 mi

Step-by-step explanation:

Bicycling A bicyclist traveled at a constant speed during a timed practice period. Write a proportion to find the distance the cyclist traveled in 30 min.

elapsed time    distance

10 min               3 mi

25 min               7.5 mi

Graph it. :)

Start at (0,0), then at 10 min. on the x-axis, go 3 spaces up on the y-axis and plot a point. Do the same for 25 min. and 7.5 miles. Draw a line through all of those points, and see where the line hits on the y-axis when the x-axis is at 30 min. :)

If two things vary directly it means their ratio is a constant.  Therefore from the formula rt=d. r=d/t,  r=3/10 or 7.5/25  which reduces to 3/10.  This is the constant speed,the lable is mi/min.  Now use  (d/30)=(3/10)  and solve for d.  Cross multiply and 10d=90, or d=9 mi

4 0
3 years ago
The point is rotated 180 degrees using as the center. Explain why the image must lie on the ray. I need
kondor19780726 [428]

Answer:

mmme fhvguefugwqfguise

Step-by-step explanation:

gxbobasax daov

8 0
3 years ago
Select the values that make the inequality true
MissTica
Select every number from -8 to -4 since
-8/-2=4 so we can’t go any bigger since it’s already at 4

Making k equivalent to -8
8 0
2 years ago
Read 2 more answers
WILL MARK BRAINLIEST
777dan777 [17]

Answer:


Step-by-step explanation:

xy = k    

where k is the constant of variation.

We can also express the relationship between x and y as:

y =      

where k is the constant of variation.

Since k is constant, we can find k given any point by multiplying the x-coordinate by the y-coordinate. For example, if y varies inversely as x, and x = 5 when y = 2, then the constant of variation is k = xy = 5(2) = 10. Thus, the equation describing this inverse variation is xy = 10 or y = .

Example 1: If y varies inversely as x, and y = 6 when x = , write an equation describing this inverse variation.

k = (6) = 8  

xy = 8 or y =  

Example 2: If y varies inversely as x, and the constant of variation is k = , what is y when x = 10?

xy =  

10y =  

y = × = × =  

k is constant. Thus, given any two points (x1, y1) and (x2, y2) which satisfy the inverse variation, x1y1 = k and x2y2 = k. Consequently, x1y1 = x2y2 for any two points that satisfy the inverse variation.

Example 3: If y varies inversely as x, and y = 10 when x = 6, then what is y when x = 15?

x1y1 = x2y2  

6(10) = 15y  

60 = 15y  

y = 4  

Thus, when x = 6, y = 4.



2nd answer choice


constant of variation is xy. XY=23. If X=7 then Y=23/7.

3 0
3 years ago
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