All categories

2 years ago

Your coin collection totals $24. You have an equal number of nickels, quarters, and half-dollars. How many coins do you have?

Mathematics

1 answer:

Vanyuwa [196]2 years ago

8 0

Answer:

90 coins

Step-by-step explanation:

Nickels = .05

Quarters = .25

half dollars = .50

Since you have an equal number of them, call that x

.05x+.25x+.50x = 24

Combine like terms

.80x = 24

Divide by .8

.80x/.8 = 24/.8

x =30

You have 30 nickes, 30 quarters and 30 half dollars

The total number of coins is

30+30+30 = 90 coins

You might be interested in

The product of 10 and a number is 3 less than the number.

djverab [1.8K]

Answer:

-1/3

Step-by-step explanation:

The product of 10 and a number is 3 less than the number.

Ok, lets call this number x.

10x = x-3 is how to algebraically write this out.

now, lets subtract x from both sides

9x = -3

Divide by 9

x = -1/3

5 0

1 year ago

Is the answer 2 to this question?

iragen [17]

Answer:

its 8

Step-by-step explanation:

use ratio solution ..

2 shampoo : 9 water

8 shampoo : 36 water

9x4 = 36

same goes too shampoo.. it needs to be multiplied with 4 as to get 36 water u multiplied 9 with 4

6 0

2 years ago

Read 2 more answers

The formula A equals =P left parenthesis 1 plus r right parenthesis squared (1+r)2 gives the amount A in dollars that P dollars

vlabodo [156]

The interest rate is 3.5%.

EXPLANATION

We substitute the given values into the formula;

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

to obtain

$6427.35=6000(1+\frac{r}{100})^2$

We divide through by 6000 to obtain,

$\frac{6427.35}{6000}=(1+\frac{r}{100})^2$

This implies that,

$1.071225=(1+\frac{r}{100})^2$

We take the square root of both sides,

$\sqrt{1.071225}=(1+\frac{r}{100})$

This gives us,

$1.035=(1+\frac{r}{100})$

Add -1 to both sides of the equation to obtain

$0.035=\frac{r}{100}$

Multiply through by 100 to obtain;

$r=3.5$ %

$Therefore the rate is 3.5%$

3 0

2 years ago

The Honda Accord was named the best midsized car for resale value for by the Kelley Blue Book (Kelley Blue Book website). The fi

Marianna [84]

Answer:

hello your question is incomplete below is the complete question

The Honda Accord was named the best midsized car for resale value for by the Kelley Blue Book (Kelley Blue Book website). The file AutoResale contains mileage, age, and selling price for a sample of 33 Honda Accords. Click on the datafile logo to reference the data. The estimated regression equation is Selling price = 20385.25049 - 0.03739 Mileage - 686.33668 age. Round your answers to the nearest dollar. a. Estimate the selling price of a four-year-old Honda Accord with mileage of 40,000 miles.

answer : ≈ $16144

Step-by-step explanation:

Determine the selling price of a four-year-old Honda Accord with mileage of 40,000 miles.

Given data :

Age= 4 year, Mileage=40,000 miles

Hence the selling price

= 20385.25049 - 0.03739 Mileage - 686.33668 age

= 20385.25049 - 0.03739(40,000) - 686.33668 ( 4 )

= $16144.32

4 0

2 years ago

I need help plz its basic trig

Levart [38]

Answer:

i dont know it srry

Step-by-step explanation:

8 0

2 years ago