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DerKrebs [107]
2 years ago
10

The square of a certain negative number is equal to five more than one-half of that number. What is the number?

Mathematics
1 answer:
Mamont248 [21]2 years ago
6 0

Answer:

-2

Step-by-step explanation:

x^2 = 5 + (1/2)x

x^2 - 0.5x - 5 = 0

x = 5/2

x = -2

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Which expression is equivalent to x^-5/3
VikaD [51]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
If tests are worth 60% of your grade, and you have a 76.8% in that class, and you fail that test, what will be your grade?
ratelena [41]

Answer:

70

Step-by-step explanation:

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3 0
3 years ago
Create a proportion using the form %/100 = is/of to represent the following word problem. 15 is 1 1/2% of what number?
Tema [17]
Let the required number be x, then to create a proportion using the form
\frac{\%}{100} = \frac{is}{of}

Thus, let 15 be 1 \frac{1}{2} \% of x, then
\frac{1 \frac{1}{2}}{100} = \frac{15}{x}  \\  \\  \frac{ \frac{3}{2} }{100} =\frac{15}{x} \\  \\ \frac{3}{2}x=1,500 \\  \\ x= \frac{1,500\times2}{3} =1,000

Therefore, 15 is <span>1 \frac{1}{2} \% of</span> 1,000
5 0
3 years ago
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