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alisha [4.7K]
3 years ago
14

Micaela sold half of her comic books and then bought fifteen more. She now has 31. With how many did she begin?

Mathematics
2 answers:
AlladinOne [14]3 years ago
7 0

Answer: 8

Step-by-step explanation: 31-15=16 16/2=8

Ede4ka [16]3 years ago
6 0

Answer:

8

Step-by-step explanation:

31-15=16

16/2=8

double check:

8(2)=16

16+15=31

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Can u pls help me with this question ​
Svet_ta [14]

Answer:

I think is 2/9 but I may be wrong

8 0
3 years ago
1. A student lifts a box of books that weighs 200 N. The box is lifted 2.5 m. How much work
Angelina_Jolie [31]

The student does a work of 500 Newton meter on the box.

Step-by-step explanation:

Given,

Weight of box of books = force = 200 N

Distance the box is lifted = 2.5 m

Work done = Force * distance

Work done = 200*2.5

Work done = 500 Newton-meter

Newton meter is same as Joule.

Work done = 500 Joules

The student does a work of 500 Newton meter on the box.

Keywords: multiplication, work done

Learn more about multiplication at:

  • brainly.com/question/12041380
  • brainly.com/question/12148432

#LearnwithBrainly

7 0
3 years ago
Suppose you invest $750.00 in a fund earning 6% simple discount. A certain time later you withdraw the investment (principal and
barxatty [35]

Answer:

4.08 + 2 = 6.08 years

Step-by-step explanation:

we know that

Simple Interest(S.I.) = (P × R × T) ÷ 100

where, P = Principal = 750

R = Rate = 6%

T = unknown

⇒ S.I. = (750 × 6 × t)÷ 100

⇒ S.I. = 45t

Also, Amount = S.I + Principal

⇒ Amount = 750 + 45t

Now Formula for Compound Interest is:

A = P(1+\frac{r}{100})^{t}

where A = Amount

=1000

P = Principle

r = rate

t = total number of year

Here, P = 750 + 45t, r = 3.5% , and t = 2.

Putting all these values in above formula:

1000 = (750 + 45t)(1+\frac{3.5}{100})^{2}

⇒ 1000 = (750 + 45t)(1.071)

⇒ t = 4.08

Hence, total time required will be 2 + 4.08 = 6.08 years.

7 0
3 years ago
Help please The question is in the photo
Sergio039 [100]
I believe the answer to your question is 23
5 0
2 years ago
Read 2 more answers
Whats the answer to this question?
forsale [732]

Answer:

0.67%

Step-by-step explanation:

2/300

3 0
3 years ago
Read 2 more answers
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