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nydimaria [60]
3 years ago
14

When y is directly proportional to x, the value of y = -2 when x = 4. What is the value of y when x = 8?

Mathematics
1 answer:
kvasek [131]3 years ago
6 0

Answer:

y = -4

Step-by-step explanation:

When y is directly proportional to x,

= y ∝ x

= y = kx

Finding k

the value of y = -2 when x = 4

-2 = k4

k = -2/4

k = -1/2

. What is the value of y when x = 8

Finding y

y = kx

y = -1/2 × 8

y = -4

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Vedmedyk [2.9K]

Answer:

m∠C = 66°

Step-by-step explanation:

Given

m∠ A = 33°

m∠ B = 81°

To determine

m∠C = ?

We know that sum of angles of a triangle is 180°.

so using the equation

m∠ A + m∠ B +  m∠C = 180°

substituting m∠ A = 33°, and m∠ B = 81° in the equatio

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m∠C = 66°

Therefore,

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4 0
2 years ago
in the given kite SZ= 10yards , WZ = 10 yards TZ=12 yards , and RZ=32 yards Determine the area of the kite
Fynjy0 [20]

If we assume the given segments are those from the vertices to the point of intersection of the diagonals, it seems one diagonal (SW) is 20 yards long and the other (TR) is 44 yards long. The area (A) of the kite is half the product of the diagonals:

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... A = 440 yd²

5 0
3 years ago
I need help fast. please help me​
galina1969 [7]

<em>ANSWER :</em>

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EXPLANATION :

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3 years ago
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VARVARA [1.3K]

Answer:

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