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zzz [600]
3 years ago
13

Solve the math problem

Mathematics
1 answer:
Ray Of Light [21]3 years ago
5 0

Answer:

2) a.   slope = 4/3

2) b.   slope = -4

Step-by-step explanation:

The slope of the line that passes through points

(x_1, y_1)  and  (x_2, y_2)

is m, given by the slope formula below:

m = \dfrac{y_1 - y_2}{x_2 - x_1}

2) a. (30, 32) and (18, 16)

m = \dfrac{y_1 - y_2}{x_2 - x_1}

m = \dfrac{32 - 16}{30 - 18}

m = \dfrac{16}{12}

m = \dfrac{4}{3}

2) b. (4, -26) and (10, -50)

m = \dfrac{y_1 - y_2}{x_2 - x_1}

m = \dfrac{-50 - (-26)}{10 - 4}

m = \dfrac{-24}{6}

m = -4

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Derrick will need $39,500 in 10 years for college tuition. How much should his parents invest now at 9.5% annual interest, compo
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Answer:

His parents should invest $15,278.16 to reach this goal ⇒ 4th answer

Step-by-step explanation:

* Lets explain how to solve the problem

- Derrick will need $39,500 in 10 years for college tuition

∴ The future amount is $39,500

∴ The time for investment is 10 years

- P is the money his parents invest now at 9.5% annual interest,

 compounded daily

∴ The rate is 9.5% per year compounded daily

- The formula of the compounded interest is:

  A=P(1+\frac{r}{n})^{nt} , where

# A is the future value of money

# P is the value of investment

# r is the rate of interest in decimal

# t is the time of investment

# n is the period of the time

∵ A = $39,500

∵ t = 10

∵ r = 9.5/100 = 0.095

∵ n = 365 ⇒ compounded daily

- Lets use the formula above to find P

∴ 39500=P(1+\frac{0.095}{365})^{365*10}

∴ 39500=p(2.58539)

- Divide both sides by 2.58539

∴ P = $15278.16

∴ His parents should invest $15,278.16 to reach this goal

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Answer:

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Step-by-step explanation:

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Combine like terms

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

Mae Ling earns a weekly salary of $365 which means salary per week is $365

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The total she make will be

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