MATHEMATICS HIGH SCHOOL

Simplify the following expression.
5(2x -3) + 4( x + 1)

Answers

Answer 1
Answer: the answer to the problem is 14x-11
Answer 2
Answer:

Answer:

14x-11 is your correct answer!!

Step-by-step explanation:

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The Greens want to put an addition on their house 18 months from now. They will need to save $10,620 in order to achieve this goal. They set aside the same amount each month, and after a year discover they have saved $6,120. The Greens must adjust their plan in order to meet their goal, so they came up with the following options: Option A: Stay with saving the original amount each month but put the addition on one month later than originally planned. Option B: Increase the amount of money they save each month by $120 from their original plan.

Answers

Answer:

So he should go with option B

Step-by-step explanation:

The Greens will need to save to achieve his goal  = $10,620

After one year if they have saved $6120.00 this means they save

6120 ÷ 12 = $510 per month

This means after 18 months they save

510 × 18 = $9,180 only. this is not enough for his goal.

so if he increases the amount of money by adding $120 from their original plan he could achieve his goal

= 510 + 120 = $630 per month

= 630 × 18 months = $11,340

So he should go with option B.
option b. is what I would go with

In a group of 20 there are 7 boys what is the ratio of girls to boys?​

Answers

Step-by-step explanation:

given,

total membersin grp =20

no.of boys =7

no.of girls=20-7=13

so,

the ratioof girlsto boys is =13:7

hope this answer helps youdear...take care and may u have a great day ahead!

I'm lost, please help (NO LINKS)​

Answers

Answer:

Adam's total cost: $9.20

Cindy's total cost: $9.20

Step-by-step explanation:

Since Adam and Cyndi's total bill costs $16, evenly splitting the cost means that each of them has to pay $8, not including the tip.

To find out the dollar value of their 15% tip, multiply $8 by 0.15:

$8 × 0.15 = $1.20.

Adam and Cindy will have to pay $8 (lunch cost) + $1.20 (tip) = $9.20 separately.    

Which of the following ordered pairs represents the solution to the system given below? x − 4y = 7
5x + 9y = 6

Answers

x − 4y = 7
5x + 9y = 6

5x − 20y = 35  //1st * 5
5x + 9y = 6

5x +9y - 5x + 20y = 6 - 35  //2nd - 1st
5x + 9y = 6

29y=-29
5x=6-9y

y=-1  //1st : 29
5x=6-9*(-1)

y=-1
x=15:5 //2nd : 5

y=-1
x=3

check:
for x=3 and y=-1 there is:
x − 4y = 7 is 3 − 4*(-1) = 7 is 7=7 ok
5x + 9y = 6 is 15-9=6 is 6=6 ok

answer: (3;-1) represents the solution.

Answer:

It’s 3,-1

Step-by-step explanation:

You have to plug in the points u can use a calculator or work it by hand but I did it on the calculator and that’s what I got

A submarine submerged at a depth of −40 feet dives 57 feet more. What is the new depth of the submarine?

Answers

Answer:

-97 feet

Step-by-step explanation:

-40+-57=-97

Please help 6n^2-5n^2-7n^2 simplify the expression

Answers

Since 6n^2 and −5n^2 are like terms then add −5n^2 to 6n^2 to get n^2.

n^2−7n^2

Since n^2 and −7n^2 are like terms then add −7n^2 to n^2 to get −6n^2.

The answer is −6n^2



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