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musickatia [10]
3 years ago
7

PLS HELP I NeED to finish this

Mathematics
1 answer:
mote1985 [20]3 years ago
3 0

Answer:

D. 15

Step-by-step explanation:

<em>Use proportions.</em>

<em />\frac{35}{25} = \frac{21}{x}  \\\\35x = 525\\x = 15<em />

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Suppose you can work at most a total of 25 hours per week. Baby-sitting, x, pays $6 per hour and working at the grocery store, y
Andrei [34K]

Answer:

<u><em>y=7  </em></u><u>number of hours at grocery store</u>

<u><em>x=18 </em></u><u>number of hours at baby- sitting</u>

Step-by-step explanation:

According to the information provided.

x is number of hours at baby- sitting

y is number of hours at grocery store

total number of hours worked

<em>1) </em><em>x+y =25</em>

total earn in a week

<em>2) </em><em>x*$6 + y* $9 = $171</em>

<em />

<em>from equation 1</em>

x+y=25

x= 25-y

<em>we place the above derived equation in equation 2 </em>

x*$6 + y* $9 = $171

(25-y)*$6 + y* $9 = $171

(25*6) -6y +9y =171

150+3y=171

3y=171-150

3y=21

<u><em>y=7  </em></u><u>number of hours at grocery store</u>

x= 25-y

x= 25-7

<u><em>x=18 </em></u><u>number of hours at baby- sitting</u>

3 0
3 years ago
The table shows the cost for ordering a certain number of tacos. What is the value of x if the cost is proportional to the numbe
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Answer:

it would be tacos times 1.3 so $7.80

8 0
3 years ago
Read 2 more answers
The length of a rectangle is 4 inches more than 4 times the width. The perimeter is 138 inches. Find the length and the width.
MatroZZZ [7]
4 times 4 which is 8 so 8 times 4 which is 32 so divide that by 138 but divide the 138 first and you will get 17.25?
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2 years ago
Item 5<br> Write 77.5% as a fraction or mixed number in simplest form.
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<span>77.5% can also be written as 77.5/100, but if you're the mathematical notation police, people don't like decimals on a fraction, sooo, an equivalent form is: </span>

<span>
 = (77.5)/(100) * (2/2)
= 155/200
= 31/40
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Find the measure of the red arc or chord in ⊙C. The measure of arc XYZ is a °
Igoryamba

The points on the red arc are points A and B

The measure of the red arc is 75 degrees

<h3>How to determine the measure of arc XYZ?</h3>

From the complete question, we have:

Angle DCE = 75 degrees

By vertical angles theorem,

Angle ACB = Angle DCE = 75 degrees

So, we have:

Angle ACB = 75 degrees

The measure of the red arc is the same as the measure of the angle ACB.

So, we have:

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Hence, the measure of the red arc is 75 degrees

Read more about arc and chords at:

brainly.com/question/25871159

3 0
2 years ago
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