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yanalaym [24]
2 years ago
12

there are 20nstudents in a math class who have brown hair this represent 80 percent of the students in the class with equation c

an be used to find the total os student in the math
Mathematics
1 answer:
Cerrena [4.2K]2 years ago
8 0

Answer:

Equation is 20 = 0.8 time x

x=25

Step-by-step explanation:

80% = 0.8

So to find x we 20/8

and we get 25 as the final answer

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How to solve 4x-y=3<br> 3x+y=4 <br> using subsitution
Ivan

The answer for X is 3 and the answer for Y is 9

Step-by-step explanation:

So, if you plug in 3 for x you would have to multiply 3×4, which is 12 then if you replace y for a 9 ,well you have to subtract 12-9 and get 3.

6 0
3 years ago
Mary's total bill for a used car is $2,700.00. If she pays an equal amount each month for an entire year, how much will she have
nasty-shy [4]

Answer:

  $225

Step-by-step explanation:

When Mary pays the cost in 12 equal payments, each is 1/12 of the total amount.

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4 0
2 years ago
What is the domain and range of the graph shown?​
marissa [1.9K]

Answer:

[0. infinity)

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7 0
3 years ago
Brian bought a new air conditioning unit on his credit card. The unit had a base price of $435. Brian made no other purchases on
Svetlanka [38]

Answer:

D is the correct answer

Step-by-step explanation:

Given:

Unit base price: $435

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n = 1.5 years = 18 months

sales tax = 8.51%

First, determine the actual price of the unit by adding the sales tax to the base price of the unit:

$435 * (1 + 0.0851)

Actual price = $472.0185

So, the total amount paid by Brian should be higher than the actual price since he used his credit card. Use the formula from economics:

F = P (1+i)^n

F = $507.96

Therefore, the total amount paid by Brian is $507.96.

(Hope this helps can I pls have brainlist (crown) ☺️)

3 0
2 years ago
The ratio of two complementary angles is 5:4. Find the measure of both angles.
grandymaker [24]

Answer:

50 degrees and 40 degrees

Step-by-step explanation:

50 degrees and 40 degrees

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5:4:9

50:40:90

7 0
3 years ago
Read 2 more answers
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