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3 years ago

10

jamie can walk to school in 3/4 hour. the model below shows the total number of hours he walked over three days. whice equation

is represented by the model?

1 answer:

katrin [286]3 years ago

7 0

3*(3/4) = 9/4 = 2 (1/4)

In words, Jamie walked 2 hours and 15 minutes over three days.

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Each day, Maya eats 1/5 cup of melons in the morning and 1/5 cup of melons in the afternoon. How many days will it take Maya to

blondinia [14]

Answer:

B

Step-by-step explanation:

If Maya eats 1/5 cups of melon twice a day: once in the morn n once in the afternoon, she eats 2/5 cups of melon a day.

8=2/5*d

d=# of days

8*5=2d

40/2=d

d=20

∴ Therefore it will take 20 days for Maya to eat 8 cups of melon.

4 0

3 years ago

111. Dani has $1,000 in an investment account that earns 3% per year, compounded monthly.

tangare [24]

Answer:

$A(t) = 1000(1.0025)^{12t}$

Step-by-step explanation:

The compound interest formula is given by:

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

Where A(t) is the amount of money in the account after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per unit t and t is the number of years the money is invested or borrowed for.

For this problem, we have that:

$P = 1000$

The investment is compounded monthly. There are 12 months in a year. So $n = 12$

The interest rate is 3%. So $r = 0.03$ .

So

The amount of money in her account after t years is:

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

$A(t) = 1000(1 + \frac{0.03}{12})^{12t}$

$A(t) = 1000(1.0025)^{12t}$

5 0

4 years ago

The sum of the measures of angles for a triangle is 180°. Find the value of x and then the measures of the 3 angles

dmitriy555 [2]

Answer:

The value of x is 50

The measures of the 3 angles are 50°, 100°, 30°

Step-by-step explanation:

Let us solve the question

∵ The sum of the measures of the angles of a triangle is 180°

∵ The measures of the 3 angles of the given Δ are x°, 2x°, (x - 20)°

→ Add them and equate the sum by 180

∴ x° + 2x° + (x - 20)° = 180°

→ Add the like terms

∵ (x + 2x + x) + (-20) = 180

∴ 4x - 20 = 180

→ Add 20 to both sides

∵ 4x - 20 + 20 = 180 + 20

∴ 4x = 200

→ Divide both sides by 4 to find x

∴ x = 50

∴ The value of x is 50

To find the measures of the 3 angles substitute x by 50 in their expressions

∵ The measure of one angle is x

∴ The measure of the 1st angle is 50°

∵ The measure of the 2nd angle is 2x

∴ The measure of the 2nd angle = 2(50)

∴ The measure of the 2nd angle is 100°

∵ The measure of the 3rd angle is (x - 20)

∴ The measure of the 3rd angle = (50 - 20)

∴ The measure of the 3rd angle is 30°

∴ The measures of the 3 angles are 50°, 100°, 30°

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3 years ago

A game involves one flip of a penny and one spin of a spinner with 3 sections numbered 1, 2, and 3. Which of the following could

siniylev [52]

Answer: 1

Step-by-step explanation:

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3 years ago

Given: g(x) = x-4 and<br> h(x) = 2x-8.<br> What are the restrictions on the domain of gh?

Pepsi [2]

Answer:

Step-by-step explanation:

6

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3 years ago