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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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3 years ago

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Tatiana [17]

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3 years ago

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What digit could be in the ten millions place of a number that is greater than 25 million but less than 73 million

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4 years ago

Find x. Round to the nearest tenth if needed.

alexdok [17]

Answer:

x = 16

Step-by-step explanation:

Use that the addition of all internal angles of a triangle must add up to 180, and the fact that the two given triangles are similar:

51 + 65 + 4 x = 180

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5 0

3 years ago

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is (-1/2 x + 6/7) - (7/2 x - 4/7) equivalent to -4 x + 2/7 ? use the properties of operations to justify your answer

LuckyWell [14K]

Answer:

The given equation is NOT justified.

Step-by-step explanation:

Here, the given equation is $(\frac{-1}{2}x + \frac{6}{7} ) - (\frac{7}{2}x - \frac{4}{7} )$ = $-4x + \frac{2}{7}$

Now, here Consider the left hand side and simplifying the left side by operating on the like terms,

⇒ $(\frac{-1}{2}x + \frac{6}{7} ) - (\frac{7}{2}x - \frac{4}{7} )$ = $\frac{-1}{2}x + \frac{6}{7} - \frac{7}{2}x + \frac{4}{7} = (\frac{-1}{2}x -\frac{7}{2}x) + (\frac{6}{7} + \frac{4}{7})$

= $(\frac{-1 - 7}{2}x ) + (\frac{6 + 4}{7} ) = \frac{-8x}{2} + \frac{10}{7} \neq -4x + \frac{2}{7}$

Here, Left side of equation ≠ Right side of the equation

Hence, $(\frac{-1}{2}x + \frac{6}{7} ) - (\frac{7}{2}x - \frac{4}{7} )$ ≠ $-4x + \frac{2}{7}$

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3 years ago