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3 years ago

HELP PLSSSSSSSSSSSSSSSSSSSSS

2 answers:

8 0

C because the the negative always is turned into a positive if you leave a braniest answer that would mean a lot of it helped thanks!!!

Naily [24]3 years ago

3 0

Answer:

b) and c) both are correct

$b) \: | - 70 - 13| = | - 83| = 83 \: units \\ c) \: | - 70 + 13| = | - 57| = 57 \: units$

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Leah has 28 more marbles than Dan. 1/3 of Leah’s marbles is equal to 4/5 of Dan’s marbles. Find the number of marbles Leah has.

konstantin123 [22]

Answer:

Leah has 48 marbles.

Step-by-step explanation:

Represent the number of marbles that each person has by L and D.

Leah has 28 more marbles than Dan: L = D + 28.

Then (1/3)L = (4/5)D. Here the LCD is 15, and so multiplying this equation by 15 will remove the fractions: 15(1/3)L = 15(4/5)D.

Therefore, 5L = 12D, and D = 5L/12.

Then, since L = D + 28, L = (5/12)L + 28, or

12L = 5L + 336, or

7L = 336, or

L = 336/7 = 48.

Leah has 48 marbles. That means that Dan has 20 marbles.

7 0

3 years ago

Read 2 more answers

Which of the following values is farthest to the left on the number line?

Kryger [21]

Answer:

1.5

Step-by-step explanation:

.01 > .02 > .20

(.01)^ 2 > .02 > 1/5

7 0

3 years ago

Janet wants to invest a sum of money that will grow to $10,000 in five years. How much does she need to put now into an account

photoshop1234 [79]

She needs to put now $8190.0 into the account

Step-by-step explanation:

The formula of the future value of the compounded monthly interest is

$FV=P(1+\frac{r}{n})^{nt}$ , where

1. FV is the future value

2. P is the money invested

3. r is the annual rate in decimal

4. n is the period of time

5. t is the number of years

Janet wants to invest a sum of money that will grow to $10,000 in five

years, into an account that pays 4% interest per year, compounded

monthly

∵ FV = $10,000

∵ r = (4/100) = 0.04

∵ n = 12 ⇒ compounded monthly

∵ t = 5 years

- Substitute these values in the formula above

∴ $10,000=P(1+\frac{0.04}{12})^{12*5}$

∴ $10,000=P(\frac{301}{300})^{60}$

∴ 10,000 = P(1.220996594)

- Divide both sides by 1.220996594

∴ P = $8190.0

She needs to put now $8190.0 into the account

Learn more:

You can learn more about interest in brainly.com/question/12773544

#LearnwithBrainly

3 0

3 years ago

Read 2 more answers

Given to circles who's radii are 70" and 49" the ratio of their circumfrences is

Galina-37 [17]

C=2pir

first one is r=70
c=2pi70=140pi

2nd one is 49=r
c=2pir
c=2pi49
c=98pi

ratio is
140pi:98pi=10:7

7 0

3 years ago

Read 2 more answers

Is the ordered pair (–8, –7) a solution to the equation 3x + 10 = 2y? Show your work.

Elena L [17]

Answer:

yes

Step-by-step explanation:

Substitute x = - 8 and y = - 7 into the equation

If both sides are equal then (- 8, - 7) is a solution

left side = 3x + 10 = 3(- 8) + 10 = - 24 + 10 = - 14

right side = 2y = 2(- 7) = - 14

Since both sides are equal then (- 8, - 7) is a solution to the equation

4 0

4 years ago