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2 years ago

.Hermes gets $4 an hour for babysitting. He needs to eam at least $100 for a stereo. Write and solve

Mathematics

2 answers:

FinnZ [79.3K]2 years ago

7 0

Answer: 25 Hours

Step-by-step explanation: Multiply 4 until you get 100 and that value is your answer.

igomit [66]2 years ago

4 0

25 Hrs

100 divided by 4 is equal to 25
Or
25 multiplied to 4 is equal to a hundred

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Which of the following is another way to express the equation 8 - (-d) = 43?

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A trucking firm has a large inventory of spare parts that have been in storage for a long time. It knowsthat some proportion of

Debora [2.8K]

Answer:

$0.1546\leq \widehat{p}\leq 0.3513$

Step-by-step explanation:

The firm tests 75 parts, and finds that 0.25 of them are notusable

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$\widehat{p}=0.253$

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So, Z_\alpha at 95% = 1.96

Formula of confidence interval of one sample proportion:

$=\widehat{p}-Z_\alpha \sqrt{\frac{\widehat{p}(1-\widehat{p}}{n}}\leq \widehat{p}\leq \widehat{p}+Z_\alpha \sqrt{\frac{\widehat{p}(1-\widehat{p}}{n}}$

$=0.253-(1.96)\sqrt{\frac{0.253(1-0.253)}{75}}\leq \widehat{p}\leq0.253+(1.96)\sqrt{\frac{0.253(1-0.253}{75}}$

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2 years ago

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Find the sum of 19x3+1(14x+4x)

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