All categories

3 years ago

Please help me how can i solve them

Mathematics

1 answer:

BlackZzzverrR [31]3 years ago

5 0

<span>So lets solve #30. </span>Start by solving the mini equations in the brackets and parenthesis. Work left to right. So start by subtracting four from three. you get -1. Do the next parenthesis, four add nine is 13. Now your equation looks like this: 7-2(-1)+5(13)=?. Next do multiplication and division from left to right. So you'd want to multiply -2 to -1. You get two. Next multiply 5 to 13 to get 65. Now your equation looks like this: 7+2+65= 74. Your answer is 74.

You might be interested in

Company a pays $23,000 yearly with raises of $1200 per year. company b pays $26,000 yearly with raises of $800 per year. which c

RSB [31]

Company A: 23,000+(1,200x9)=33,800
Company B: 26,000+(800x9)=33,200
So, Company A pays $600 more than company B in year 10

7 0

3 years ago

Solve for y 2x-5y=-12

Darina [25.2K]

To solve for y, we must isolate it

$2x - 5y = -12$
$2x + 12 = 5y$
$\frac{2x + 12}{5} = y$

5 0

3 years ago

. Which is the correct expression for this problem? Andy used 1/6 of a can of paint to cover 1/2 of a wall. How much of the can

Fed [463]

If he uses 1/6 for 1/2 the wall he uses 2x as much for the whole wall. because none of the equations have x2 you can ÷1/2 because multiplying by 2 is the same as dividing by a half.
so the answer is 1/6 ÷ 1/2

4 0

3 years ago

Read 2 more answers

Find the mean of the following 2x-5y,5x+2y,8x+6y,x-y

White raven [17]

Answer: 4x + 0.5y

Step-by-step explanation:

Concept:

Here, we need to understand the idea of the mean (average).

The "mean" is the "average" you're used to, where you add up all the numbers and then divide by the number of numbers.

If you are still confused, please refer to the attachment below for a graphical explanation.

Solve:

**Disclaimer** I assume the question is asking for the arithmetic mean instead of geometric. If it was, then you can refer to my answers. If it was not, then you can point it out and I will redo the question.

Terms: 2x-5y, 5x+2y, 8x+6y, x-y

Number of terms: 4

[(2x-5y) + (5x+2y) + (8x+6y) + (x-y)] / 4

=[2x + 5x + 8x + x + 2y - 5y + 6y - y] / 4

=[16x + 2y] / 4

=4x + 0.5y

Hope this helps!! :)

Please let me know if you have any questions

3 0

3 years ago

How do you write four more than ten

Anastasy [175]

Answer:

4 more than 10 is the same thing as 10 + 4

That would be 14.

5 0

3 years ago