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Vinvika [58]
3 years ago
6

The variables Y and X have a proportional relationship andY equals 15 when x=3. What is the value of X when Y =4?

Mathematics
1 answer:
telo118 [61]3 years ago
7 0

Answer:

4/5 or 0.8

Step-by-step explanation:

y and x is directly proportional so when one increases the other also increases

the scale factor is 15/3 equals 5

so y is 4, x times 5 equals 4, which we rearrange to give 4/5 or 0.8

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2 years ago
Find the value of x in the triangle. SU RV
kodGreya [7K]

Answer:

x = 8

Step-by-step explanation:

Δ TSU and Δ TRV are similar , thus the ratios of corresponding sides are equal, that is

\frac{TS}{TR} = \frac{TU}{TV} , substitute values

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3x = x + 16 ( subtract x from both sides )

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5 0
3 years ago
line j is perpendicular to lines m and n. if the products of the slope of all three lines is -8, what is the slope of line j?
jeka94

Answer:

the slope of line j is -1/8, the slope of lines m and n are both 8.

Explanation step by step:

Suppose j is the slope of line j, m the slope of line m and n the slope of line n. Since:

1. line j is perpendicular of line m, so j*m= -1

2. J is perpendicular of line n, so  j*n=-1

3. m and n and parallel so m=n

As we want to know the slope of j we clear the equations presented to us in order to find it.

(1) m* n* j = -8, since n=m we have  n^{2}* j = -8.

we clear j; n^{2} * j = -8 \\ j =\frac{-8}{n^{2} }

replacing in the equation n*j = -1 we get

n*(-8/n^2) = -1. Thus n = 8. Since j = -1/n = -1/8.

7 0
3 years ago
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