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3 years ago

Please help me! Will mark brainliest if you show steps

Mathematics

1 answer:

Tatiana [17]3 years ago

4 0

Answer:

definitely equation B

steps:

multiply 12 by the hours, and add 15. for each part, it will equal the total charge. 12*2+15 and so on. hope this helps

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If Sally earned $630 in interest when investing $1200 at a rate of 15% per year, how many years have passed?

jasenka [17]

630/1200*0.15=3.5.........

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3 years ago

Question 4 of 25

soldi70 [24.7K]

Answer:

D)graph c

Step-by-step explanation:

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2 years ago

5th grade math. Correct answer will be marked brainliest. What goes in the blank box?

Naddik [55]

Answer:

The answer is 1.97 meters per second

Step-by-step explanation:

Plz give brainliest thanks :) Let me explain you how you do this Housefly is 1.967

The 7 is the tenth and the 6 is the hunderth

1.967 round to 1.96 from the hunderths because the last number is greater than 5 so you round up!

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3 years ago

Read 2 more answers

Cassie spends 2/3 of her money on supplies. Cassie spends her remaining money on 3 sandwiches. Each sandwich costs $5.25. How mu

Irina18 [472]

In words:
Three sandwiches, each costing $5.25, equals 1/3 of Cassie's total money

We can write the formula:

(5.25*3)=1/3x

Now solve:

15.75=1/3x
3(15.75)=x
x=$47.25
Hope this helps!!

3 0

3 years ago

Read 2 more answers

A survey of 35 people was conducted to compare their self-reported height to their actual height. The difference between reporte

Over [174]

Answer:

The test statistic is t = 3.36.

Step-by-step explanation:

You're testing the claim that the mean difference is greater than 0.7.

At the null hypothesis, we test if the mean difference is of 0.7 or less, that is:

$H_0: \mu \leq 0.7$

At the alternate hypothesis, we test if the mean difference is greater than 0.7, that is:

$H_1: \mu > 0.7$

The test statistic is:

$t = \frac{X - \mu}{\frac{s}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.