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katen-ka-za [31]
3 years ago
14

Solve the following please

Mathematics
2 answers:
Bumek [7]3 years ago
7 0

Answer:

4

Step-by-step explanation:

7+2x÷3=5

7+2x=5*3

7+2x=15

15-7=2x

8=2x

x=8÷2

x=4

Dima020 [189]3 years ago
5 0

Answer:

x=4

Step-by-step explanation:

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In one day, The Tool Shed rented out 25 self-propelled and riding mowers for a total fee of $900. The dolly rental cost was $20
masha68 [24]

They rented out 5 self-propelled mowers and 20 riding mowers.

Data;

  • Total number of tool rented out = 25
  • Cost of tools rented = $900

<h3>System of Equations</h3>

To solve this problem, we have to write a system of equations to represent the problem.

since we have

  • x = self - propelled mower
  • y = riding mowers

Let's write equations with these variables.

x+y = 25...equation (i)\\20x+40y = 900...equation(ii)

From equation (i)

x+y= 25\\x = 25 - y...equation(iii)

Put equation (iii) into equation (ii)

20x+40y=900\\x = 25-y\\20(25-y)+40y=900\\\\500-20y+40y=900\\500+20y=900\\20y=900-500\\20y=400\\\frac{20y}{20}=\frac{400}{20}\\ y=20

Let's substitute the value of y into equation(i)

x+y =25\\x+20 = 25\\x = 25 - 20\\x = 5

From the calculations above, they rented 5 self-propelled mowers and 20 riding mowers.

Learn more on system of equations here;

brainly.com/question/13729904

4 0
2 years ago
Two-thirds of a class are boys. If there are 12 boys, then<br> how many girls are in the class?
son4ous [18]

Step-by-step explanation:

so 2/3 OF the class are boys...

***REMEMBER IN MATHEMATICS, ^OF^ IS USED TO SAY MULTPLICATION***

so 2/3 OF class(x) are boys and there are 12 boys...

so 2/3 * x = 12

12 / (2/3) = x

to solve use the Keep, Change, Flip method

Keep 12, change / to multiplication, flip 2/3 to 3/2

it becomes 12 * 3/2 and to solve easier 12 is same thing as 12/1

12/1 * 3/2

Multiply across (numerator by numerator and denominator by denominator)

(12*3) / (1*2) = 36 / 2

Simplify

18

So the class has 18 students, and 2/3 of boys (12 of the students)

we can solve for how many girls are in the class

Depending on how your teacher wants to see the work:

either 18 - 12 = 6

or 1/3 * 18 which we rewrite as 1/3 * 18/1 = (1*18)/(3*1) which is 18/3... simplified it is  6

There are 6 girls in the class.

Hope this helps! :)

6 0
3 years ago
Will mark brainlist
vladimir2022 [97]

Answer:

n-17

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
HELP ME PLEASE I DONT UNDERSTAND!!!!!
rewona [7]

Answer: 5 pounds

Step-by-step explanation: 90 - 47.65 ÷ 8.47 = 5

8 0
3 years ago
If the measure of F is 46 degrees. What does angle C measure?<br><br> A<br> E<br> B<br> D<br> C
melomori [17]

Answer:

46 degrees, they are equal. Hope that helped! (would appreciate being brainliest)

Step-by-step explanation:

3 0
3 years ago
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