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2 years ago

Help!! Algebra help will give stars

Mathematics

1 answer:

Inessa [10]2 years ago

5 0

Answer:

I'll answer one question

Step-by-step explanation:

a. x >= -4. This reads, the domain is greater than and equal to negative four to infinity.

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What is 6.549 to the nearest tenth

Afina-wow [57]

It would be 6.5. The 5 after the decimal would stay the same since the number after it isn't greater than 5

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3 years ago

Read 2 more answers

Without using a calculator, choose the statement that best describes the value of the square root of 86

zubka84 [21]

The value of square root 86 is between 9 and 9.5

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3 years ago

If an employer reduces the working week from 40 hours to 35 hours, with no

tangare [24]

Answer:

14.285714285714 %

Step-by-step explanation:

suppose the weekly payment is of x dollars

Then

Previous payment : $(x/40) per hour

New payment : $(x/35) per hour

Then

The percentage increase in the hourly rate of pay is :

$=\frac{\frac{x}{35} -\frac{x}{40} }{\frac{x}{40} } \times100$

$=\frac{\frac{5x}{1400} }{\frac{x}{40} } \times100$

$=\frac{5x}{1400} \times \frac{40}{x} \times100$

$=\frac{200}{1400} \times100$

$=\frac{1}{7} \times100$

$=14.285714285714$

6 0

2 years ago

Which square root is between 4 and 5

shusha [124]

Answer:
I’m not sure what you mean by divided, but the square root of 24 would be between 4 and 5.

Explanation:
I translated 4 and 5 into square roots, being the square root of 16 (4^2) and the square root of 25 (5^2).
4 is equal to the square root of 16 just as 5 is equal to the square root of 25.
Of the given square roots in the answers, only the square root of 24 was between the square roots of 16 and 25. Therefore, the square root of 24 is between 4 and 5.

8 0

2 years ago

A sample of 1500 computer chips revealed that 55% of the chips do not fail in the first 1000 hours of their use. The company's p

Anvisha [2.4K]

Answer:

1.28

Step-by-step explanation:

Given that a sample of 1500 computer chips revealed that 55% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 53% of the chips do not fail in the first 1000 hours of their use.

$H_0: p = 0.53\\\\H_a: p \neq 0.53$

(Two tailed test for testing sample proportion with population proportion)

Std error of proportion assuming p = 0.53 is

$\sqrt{0.53*0.47/1000} \\=0.0157$

p difference = 0.02

Z= test statistic = p diff/std error = 1.2775~1.28

8 0

3 years ago