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3 years ago

10. How many solutions does the equation have? 4b − 10 = 2(2b − 5)

1 answer:

3 0

4b - 10 = 2 (2b - 5)
4b - 10 = 4b - 10
4b - 4b = -10 + 10
b = 0

Hence, b has only one answer so,
we can say that this equation has only one solution.

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6÷2(1+2)= _____ whats the answer to this

GalinKa [24]

Answer:

Step-by-step explanation:

You do parenthesis first so 1+2=3

Then you do division 6 divided by 2=3

Then you will multiply 3 by 3 so 9

This is known as pemdas

P=parenthesis

E=exponents

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2 years ago

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3 years ago

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2 years ago

7.) x-3>4 please help

givi [52]

Answer:

x>7

Step-by-step explanation:

x-3>4

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x>7

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3 years ago

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The Ohio Department of Agriculture tested 203 fuel samples across the state in 1999 for accuracy of the reported octane level. F

OlgaM077 [116]

Answer:

The Sample size is 1918.89035

Step-by-step explanation:

Consider the provided information.

It is given that 14 out of 105 samples failed.

Therefore p = 14/105 = 0.13 3... and q=1-0.133=0.867

Samples would be needed to create a 99 percent confidence interval.

Subtract the confidence level from 1, then divide by two.

$\frac{(1 -0.99)}{2}=0.005$

By standard normal table z=2.5758≈2.58

Calculate the sample size as:

$n=\frac{z^2pq}{e^2}$

Where, e is the margin of error,

Substitute the respective values.

$n=\frac{(2.58)^2(0.133)(0.867)}{(0.02)^2}=1918.89$

Hence, the Sample size is 1918.89035

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3 years ago