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2 years ago

The sum of 5.75 and half of a number is -5. what is the number?

Mathematics

1 answer:

soldi70 [24.7K]2 years ago

6 0

Answer:

21.50

Step-by-step explanation:

$let \: the \: number \: = y \\ half \: the \: number = \frac{y}{2} \\ \frac{y}{2} + 5.75 = - 5 \\ \frac{y}{2} = - 5 - 5.75 \\ \frac{y}{2} = -10.75 \\ crossmultiply \\ y = 2 \times -10.75 \\ y = -21.50$

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3 years ago

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3 years ago

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3 years ago

What is the value of the expression 5x2 + 2x when x = 5?

masha68 [24]

Answer:

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Step-by-step explanation:

Given:

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To determine a numerical value for the expression, simply substitute the value of "x" into the expression and simplify the expression, if necessary, to determine a specific number for the expression provided.