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3 years ago

Which statement is true?

Mathematics

1 answer:

Crank3 years ago

4 0

The answer is neither because to be complementary they need to equal 90 degrees and to be supplementary the need to equal 180 degrees. The sum of the two angles equals 169 degrees.

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Keisha took out a loan for 10,500 and was charged simple interest at an annual rate of 8.8%. The total interest she paid on the

klio [65]

Answer: 6 months

Step-by-ste

462=(10,500)(0.88)t

462=924t

462/924=t

0.5=t

So the loan was 0.5 year's

Since we assume that there are 12 months in a year, the loan was 0.5 .12=6 months

4 0

3 years ago

May I have some help please?

Alenkasestr [34]

Answer:

$\large \boxed{\$532}$

Step-by-step explanation:

Assume the barn is 80 ft long, 50 ft wide, and 30 ft high

1. Area to paint

They will be painting two sides and two ends.

The sides are 80 ft × 30 ft.

The ends are 50 ft × 30 ft,

Area of sides = 2 × 80 ft × 30 ft = 4800 ft²

Area of ends = 2 × 50 ft × 30 ft = <u>3000 ft²</u>

Total area = 7800 ft²

2. Amount of paint needed

One gallon covers 420 ft².

$\text{Amount of paint} = \text{7800 ft}^{2} \times \dfrac{\text{1 gal}}{\text{420 ft}^{2}} = \text{18.6 gal}$

They usually sell barn paint in whole gallons. Alexis will have to buy 19 gal of paint to cover the whole barn.

3. Total Cost

It costs $28 for one gallon of paint,

$\text{Total cost} = \text{19 gal} \times \dfrac{\$28}{\text{1 gal}} = \mathbf{\$532}\\\\\text{It will cost $\large \boxed{\mathbf{\$532}}$ to paint the barn.}$

5 0

3 years ago

A semicircle is attached to the side of a rectangle as shown.

seraphim [82]

Area if rectangle = 18*6 = 108
Area of semi circle = pi*r^2/2
Pi * 3^2 / 2
Pi * 4.5
= 14.13716694

Then add both areas for the area of the entire shape:
14.13716694+108 = 122.1371669 cm^2

4 0

3 years ago

Read 2 more answers

Can someone tell me step by step how to solve this

Igoryamba

Answer:

Step-by-step explanation:

14b = -56

Divide both sides by 14

$\frac{14b}{14}=\frac{-56}{14}$

b = -4

3 0

3 years ago

Read 2 more answers

A helicopter altitude changes by -28 1/8 ft in 3 3/4 s. What is the average change in the helicopters altitude each second?

Alina [70]

Answer: - 7 1/2 feet

Step-by-step explanation:

From the question, we are informed that a helicopter altitude changes by -28 1/8 ft in 3 3/4 s. The average change in the helicopters altitude each second will be gotten by dividing -28 1/8 by 3 3/4. This will be

= -28 1/8 ÷ 3 3/4

= -225/8 ÷ 15/4

= -225/8 × 4/15

= -15/2

= -7 1/2

The average change in the altitude each second is - 7 1/2 feet

5 0

3 years ago