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3 years ago

Which of the following is equivalent to 5 + 5x > 8(x-1) ?

Mathematics

1 answer:

nignag [31]3 years ago

6 0

5+5x>8(x-1)

5+5x>8x-8

5x-8x>-8+5

-3x>-3

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Solve for t.<br><br> - 5 t ≥ 70

svlad2 [7]

Answer:

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3 years ago

Answer ASAP 15 points

malfutka [58]

A or 5/7, they’re both odd numbers so it cannot be simplified any further

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3 years ago

A population is estimated to have a standard deviation of 9. We want to estimate the population mean within 2, with a 99% level

cupoosta [38]

Answer:

The sample required is $n = 135$

Step-by-step explanation:

From the question we are told that

The standard deviation is $\sigma = 9$

The margin of error is $E = 2$

Given that the confidence level is 99% then the level of significance is mathematically evaluated as

$\alpha = 100-99$

$\alpha = 1 \%$

$\alpha = 0.01$

Next we will obtain the critical value $\frac{\alpha }{2}$ from the normal distribution table(reference math dot armstrong dot edu) , the value is

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.05 }{2} } = 2.58$

The sample size is mathematically represented as

$n = [ \frac{Z_{\frac{\alpha }{2} } * \sigma }{E} ]^2$

substituting values

$n = [ \frac{ 2.58 * 9 }{2} ]^2$

$n = 135$

3 0

3 years ago

Write the expression 7b-3(b-1) in simplest form

Anna007 [38]

4b-3 .. you use distributive property and multiply 3*b-1 then you have 7b-3b-3 then you combine like terms and subtract 3b from 7b and get 4b-3

8 0

3 years ago

Read 2 more answers

What is the missing number in the table?

Wewaii [24]

Answer:

The missing number is 16.

Step-by-step explanation:

The ratio between x and y is 1:4. 4 times 4 is 16. Hope this helped! :)

4 0

3 years ago