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SVETLANKA909090 [29]
2 years ago
7

6.x = 4y2-12 (4y2 here means 4 y squared) Work out the value of x when y = 5

Mathematics
1 answer:
dezoksy [38]2 years ago
5 0

Answer:

88

Step-by-step explanation:

Given

x = 4y² - 12 ← substitute y = 5

x = 4(5)² - 12 = 4(25) - 12 = 100 - 12 = 88

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Which of the following is equal to the expression below? (160x243)^1/5
Kipish [7]
160 = 2 x 2 x 2 x 2 x 2 x 5 = 2^5 x 5
243 = 3 x 3 x 3 x 3 x 3 = 3^5
So
(160 * 243)^1/5
= 5th root of (160 * 243)
= 5th root of (2^5 * 5 * 3^5)
= 2 * 3 * (5th root of 5)
= 6 * (5th root of  5)
Answer is D. 6 * (5th root of  5)
3 0
3 years ago
At the end of the summer, Caitlin had saved $120 from her summer job. This was her initial deposit into a new saving account at
Minchanka [31]

Answer:

120.

Step-by-step explanation:

She adds $5 to her account each week. If 0 weeks have gone by, then her account hasn't changed.

6 0
3 years ago
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Roll a dice. Chance of it landing on a 6 is ? In ?
ohaa [14]
It is a 1 to 6 ratio
4 0
3 years ago
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The formula to determine energy is uppercase E = one-half m v squared. What is the formula solved for v?
alexandr402 [8]

Answer:

Step-by-step explanation:

E=\frac{1}{2}mv^2

All the variables on the right are being multiplied together then the whole mess is being divided by 2.  Let's get rid of the 2 first.  The undoing of division is multiplication, so we will begin by multiplying both sides by 2 to get

2E=mv^2

Next we will move the m. The undoing of multiplication is division.  So we divide both sides by m to get

\frac{2E}{m}=v^2

The undoing of a square is to take the square root, so we will do that to both sides giving us, finally

\sqrt{\frac{2E}{m} }=v

6 0
3 years ago
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Choose the equations that are not linear equations. -x - y = 2 x 2 + y = 4 - y 3 = 1 x = 5
NeX [460]
X² + y = 4 and -y³ = 1x -5 are not linear equation because they contain a variable with a exponents. These types of equation are called quadratic equations. 
5 0
2 years ago
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