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3 years ago

Please answer asap thank you!

Mathematics

2 answers:

Vanyuwa [196]3 years ago

7 0

Answer:

the answer is 5.1/2 ok because cube root of 343 is 7 and cube root of -8 is -2 ok the answer is 5.1\2

sasho [114]3 years ago

4 0

Answer:

5 $\frac{1}{2}$

Step-by-step explanation:

The cube root of a number is a number that, when multiplied by itself twice, equals the number in the cube root.

So, the cube root of 343 is 7 because 7 * 7 * 7 = 343.

Now the expression looks like: 7 + $\frac{3}{4}$ $\sqrt[3]{-8}$

The cube root of -8 is -2 because -2 * -2 * -2 = 8

Now the expression is: 7 + $\frac{3}{4}$ (-2)

3/4 * -2 = -6/4, or -1 and 1/2

7 - 1 1/2 = 5 and 1/2

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PLZZ HELP URGENT

Mashcka [7]

Answer:

5x + 2x.....combine like terms..... = 7x

5x + 2x....subbing in 1 7x - 1....subbing in 1

5(1) + 2(1) = 5 + 2 = 7 7(1) - 1 = 7 - 1 = 6

5x + 2x...subbing in 2 7x - 1...subbing in 2

5(2) + 2(2) = 10 + 4 = 14 7(2) - 1 = 14 - 1 = 13

5x + 2x...subbing in 3 7x - 1...subbing in 3

5(3) + 2(3) = 15 + 6 = 21 7(3) - 1 = 21 - 1 = 20

5x + 2x...subbing in 4 7x - 1....subbing in 4

5(4) + 2(4) = 20 + 8 = 28 7(4) - 1 = 28 - 1 = 27

5x + 2x...subbing in 5 7x - 1...subbing in 5

5(5) + 2(5) = 25 + 10 = 35 7(5) - 1 = 35 - 1 = 34

5x + 2x result values are 1 more then 7x - 1 result values

there are no values that will make the 2 expressions equal....

because 5x + 2x = 7x......and the other one is 7x - 1......so the 7x - 1 values will always be 1 number less...because ur subtracting one

Step-by-step explanation:

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3 years ago

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Your brother works for a company that cleans and paints the outside of houses at a rate of $35 per hour. The company charges a f

Reptile [31]

Answer:

<h2>The x represents the hours my bro will work for in that company </h2>

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3 years ago

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Simplify 4x + 8y - 3x + 2y

mezya [45]

Answer: 4x-3x, and 8y+2y. x+10y is the equation in simplest form.

Step-by-step explanation:

Step 1. You need to combine like terms:

4x-3x, and 8y+2y. x+10y would make the equation( 4x + 8y - 3x + 2y) in simplified form.

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3 years ago

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max2010maxim [7]

Answer:

n = 0.38 rotation per second

Step-by-step explanation:

The device rotates according to the mathematical equation :

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Where n is the rotational speed and is measured in rotations per second (s).

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3 years ago

2x^2-5x+1=0 solve using quadratic formula

Gnesinka [82]

Answer:

x=(5±√17)/4, or x ≈ 2.281 and 0.219

Step-by-step explanation:

$2x^{2} -5x+1\\$

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$5+- \sqrt{(-5)-4(2)(1)}/2(2)$

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3 years ago