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2 years ago

Direct variation: if y = 4, when x = -2, find x when y = 6

Mathematics

2 answers:

Contact [7]2 years ago

6 0

-3 because when y is two then x is -1 so if you multiply both values by 3 then y is 6 and x is -3

Julli [10]2 years ago

4 0

Answer:

-3

Step-by-step explanation:

Because when y is 4, x is 4/-2 = -2

So when y is 6,

x= 6/-2

= -3

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What is the difference between -120 and 400?

Mice21 [21]

Answer:

-120 is a negative and 400 is a positive

Step-by-step explanation:

also there is a 520 difference

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2 years ago

Which rule describes the transformation? picture below

Mekhanik [1.2K]

Answer:

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Step-by-step explanation:

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Hope this helps! Let me know!

6 0

2 years ago

Please help me answer this question.

iVinArrow [24]

4 6/9 + 7/9 = 5 3/9
Hope this helps
Answer:
5 3/9 or 5 1/3

3 0

1 year ago

Read 2 more answers

One acute angle of a right triangle is 12 degrees more than twice the other acute angle. Fine the acute angles of the right tria

Svetlanka [38]

Let one acute angle be X and one be Y
X+Y=90 -------Eq.1
2X+12=Y
2X-Y=-12------Eq.2
solving eq 1&2 we get,
3x=78
∴X=26
substituting value X in equation.1
X+Y=90
Y=90-26
∴Y=64
⇒answer:- X=26°
Y=64°

8 0

2 years ago

Make b the subject of the formula <br><img src="https://tex.z-dn.net/?f=k%20%3D%20%20%5Cfrac%7Bbrt%7D%7Bv%20-%20b%7D%20" id="Tex

balu736 [363]

Answer:

b = $\frac{kv}{k+rt}$

Step-by-step explanation:

Given

k = $\frac{brt}{v-b}$ ← multiply both sides by (v - b)

k(v - b) = brt ← distribute left side

kv - kb = brt ( subtract brt from both sides )

kv - kb - brt = 0 ( subtract kv from both sides )

- kb - brt = - kv ( multiply through by - 1 to clear the negatives )

kb + brt = kv ← factor out b from each term on the left

b(k + rt ) = kv ← divide both sides by (k + rt )

b = $\frac{kv}{k+rt}$

5 0

2 years ago