Please explain this one

Answers

Answer 1

Answer: round each number and then do what the problem asks you to do wether that be subtraction or addition.

Answer 2

Answer: just subtract and round!

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Alexia started babysitting when she was in high school. She has built a reputation for herself and has become popular among the neighborhood parents. Alexia charges $10/h and gets a $5 automatic tip. Alexia needs $75 to buy a present for her mother. She wants to find out the minimum number of hours she needs to babysit at one job to get the money she needs. (5 points)a. Write an inequality to show how to solve this problem. Identify what the variable is and what it represents.
b. Solve the inequality to find out the minimum number of hours Alexia needs to babysit. Show your work.

Answers

so 5 dollar is autpay
so total pay=(payperhour) times (hoursworked) +tip/autopay
total pay needed=75
autopay=5
pay per hour=10 dolllar per hour or 10
replace payperhour with 10
replace hoursworked with h
subsitute and solve
75=10 times h+5
subtract 5 from both sides
70=10 times h
divide both sides by 10
7=h

she needs to work at least 7 hours

a.
inequality is she needs to make at least 75
at least is <
so the inequality is
75<10h+5 or
10h+5>75

b. we solved the inequality above
answer is
hours>7
at leas 7 hours

$10(7+x)=75$ she charges $10 an hour = $10
$10(7+5x)=75$ she needs $75 + $5 tip = 5t 10*7=70 + 5 = 75

she needs to babysit 7hours in all..
she charges 10$ an hour , if she dose 7 hours she will have 70$ but there is an automatic tip of 5$ soo 70 + 5 = 75

dose this help?

An elephant can run one over four of a mile in 36 seconds. At this rate, which expression can be used to determine how fast an elephant runs in miles per hour?

Answers

Answer:

The expression

Step-by-step explanation:

How do you write 97.356 in number names and write this It using number base ten numerals

Answers

You write 97.356 as ninety-seven and because of the decimal 356 thousandths

In 9 minutes, an athlete can run 2 kilometers. Express the athlete's average speed in meters per second. Round to the nearest tenth.

Answers

(2 km/ 9 minutes) x (1,000 m/km) x ( 1 minute/60sec) =

(2 x 1,000) / (9 x 60) m/sec = 3.7 m/s

.27 is the final answer message for work

Can someone show me the graph and domain and range for this piece wise function?

Answers

For the graph you can use Desmos and for both you can use Wolfram Alpha

75 students decreased by 80%. Help plz:///

Answers

So,

75 students decreased by 80%. That means that 100 - 80 = 20% remain.

To find 20% of 75 students, just find 10%, which means simply moving the decimal point one place to the left.

75 --> 7.5 = 10% of 75

Therefore,
15 = 20% = 75 because 7.5 * 2 = 15

There are 15 students left.

Terribly sorry if i am wrong.. I believe it would be about 40%

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