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3 years ago

Write the equation of the line that has a slope of 5 and a y-intercept of 9.

Mathematics

1 answer:

Anon25 [30]3 years ago

7 0

Answer:

Realmente no lo se.

Step-by-step explanation:

Realmente no lo se. no sé. así que sí, lo siento, no puedo ayudar.

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Ray spent $4266 on a new TV. If he paid it off in 18 equal payments, how much was each payment

TiliK225 [7]

Answer:

$237

Step-by-step explanation:

4266 divided by 18

6 0

3 years ago

The function A = A 0 e -0.0077x models the amount in pounds of a particular radioactive material stored in a concrete vault, whe

AysviL [449]

Answer:

After 80 years 432 pounds of radioactive element will be remaining.

Step-by-step explanation:

A function $A_{t}=A_{0}e^{-0.0077x}$ models the amount of a radioactive material.

Here x = number of years taken for decay.

If $A_{t}=432$ pound and $A_{0}=800$ pound, then we have to calculate the time for decay.

$A_{t}=A_{0}e^{-0.0077x}$

$432=800e^{-0.0077x}$

$e^{-0.0077x}=\frac{432}{800}$

Take log on both the sides of the equation

$ln(e^{-0.0077x})=ln(\frac{432}{800} )$

-0.0077x = ln(0.54)

-0.0077x = -0.616186

x = $\frac{0.616186}{0.0077}$

x = 80.02 years

Therefore, After 80 years 432 pounds of radioactive element will be remaining.

6 0

3 years ago

3) John has decided to invest his $20,000 in two saving accounts. He decides to invest some of it at 4.5% annual interest and th

Elza [17]

The amount he invested in the account that yields 4.5% interest is $7,500.

The amount he invested in the account that yields 2.5% interest is $12,500.

<h3>What is the system of equations that represent the question?</h3>

a + b = $20,000 equation 1

0.045a + 0.025b = $750 equation 2

Where:

a = amount he invested in the account that yields 4.5% interest

b = amount he invested in the account that yields 2.5% interest

<h3>How much was invested in the account that yields 4.5% interest?</h3>

Multiply equation 1 by 0.025

0.025a + 0.025b = 500 equation 3

Subtract equation 3 from 2

250 = 0.02a

a = 12,500

<h3>How much was invested in the account that yields 4.5% interest?</h3>

Subtract 12,500 from 20,000

20,000 - 12,500 = $7,500

To learn more about simultaneous equations, please check: brainly.com/question/25875552

7 0

2 years ago

What is the length of side c

Nutka1998 [239]

c ≈ 16.7 ( to 1 dec. place ) → d

since triangle ABC is right use the cosine ratio to find c

cos33° = $\frac{adjacent}{hypotenuse}$ = $\frac{14}{c}$

multiply both sides by c

c × cos33° = 14 ( divide both sides by cos33° )

x = $\frac{14}{cos33}$ ≈ 16.7 ( to 1 dec. place )

7 0

4 years ago

Read 2 more answers

4.538461538 rounded to nearest 10th

Nutka1998 [239]

It would be 4.5
Hope this helps.

7 0

3 years ago