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kati45 [8]
3 years ago
12

How do Solve these equations

Mathematics
1 answer:
arsen [322]3 years ago
4 0

I can’t do these right off hand but look them up on google and google will tell you exactly how to do and if you type in the problem it will explain how to the the problem as well , I hope you understand and this helped you.

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I want to read 4 books over the next month. My bookshelf has 12 different books. In how many ways can I choose which books to re
shusha [124]

Answer:

Step-by-step explanation:

You are going to choose 4 books in any order.

Four = 12! /(8!4!)    Remember that order doesn't matter, so we have 12C4

495

8 0
3 years ago
Tammy invested her savings in two investment funds. The amount she invested in Fund A was twice as much as the amount she invest
Sidana [21]

Answer: She invested $12000 in fund B.

Step-by-step explanation:

Let x represent the amount which she invested in fund A.

Let y represent the amount which she invested in fund B.

The amount she invested in Fund A was twice as much as the amount she invested in fund B. This means that

x = 2y

Fund A returned a 7% profit. It means that the profit returned from fund A is

7/100 × x = 0.07x

Fund B returned a 5% profit. It means that the profit returned from fund B is

5/100 × y = 0.05y

if total profit from the two funds together was $2280, it means that

0.07x + 0.05y = 2280- - - - - - - - - - -1

Substituting x = 2y into equation 1, it becomes

0.07 × 2y + 0.05y = 2280

0.14y + 0.05y = 2280

0.19y = 2280

y = 2280/0.19

y = 12000

x = 2y = 2 × 12000

x = 24000

7 0
3 years ago
2. El
Mashcka [7]

Answer:

95

Step-by-step explanation:

step 1

Find out the total ball bearing ordered

Multiply the number of ball bearing boxes by the number of ball bearings in each box.

17(85)=1,445\ ball\ bearings

step 2

Find out the total springs ordered

Multiply the number of spring boxes by the number of springs in each box.

15(90)=1,350\ springs

step 3

To find out how many more ball bearings than  springs did they order, subtract the total number of springs from the total number of ball bearings

1,445-1,350=95

6 0
3 years ago
I need help and i also need the work shown...please and thank you
marin [14]

Answer:

55

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Round 1231.50432 to the nearest tenth
Verizon [17]

Answer:

1231.5

Step-by-step explanation:

I hope this help.

5 0
3 years ago
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