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2 years ago

7

Leah has 2/5 of a gallon of paint. She decides to use 1/4 of this paint to paint a door. What fraction of a gallon of paint does

she use for the door? Explain your answer.

1 answer:

love history [14]2 years ago

3 0

Answer:

$\frac{1}{10}$

Step-by-step explanation:

1/4 of 2/5 = 1/4 * 2/5

= $\frac{2}{20}$

$\frac{2}{20}$ could be simplified into $\frac{1}{10}$

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The speed of sound is approximately 1.2 x 10^3 km/h. How long does it take for sound to travel 7.2 x 10^2 km? Write your answer

photoshop1234 [79]

Answer:

36 minutes

Step-by-step explanation:

time = distance / speed

time = (7.2×10² km)/((1.2×10³ km)/(60 min)) = (7.2×60/1.2)×10²⁻³ min

= 360×10⁻¹ min

= 36 min

It takes sound about 36 minutes to travel 720 km.

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4 years ago

What is the algebraic expression for 9 less than the square root of a number?

Pie

Answer:

4 is the square root of 2 and it's less than 9

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3 years ago

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The perimeter of an isosceles triangle is 32 inches. If the base is longer than half of the two other equal sides by 2 inches, f

Leona [35]

Answer:

Step-by-step explanation:

Let equal sides of an isosceles triangle = a inches

Base = $\frac{1}{2}a+2$ inches

Perimeter = 32 inches

a + a + $\frac{1}{2}a+2$ = 32

$2a + \frac{1}{2}a+2 = 32\\\\\frac{2a*2}{1*2}+\frac{1}{2}a+2=32\\\\\frac{4a}{2}+\frac{1}{2}a+2=32\\\\\frac{5}{2}a+2 = 32\\\\$

Subtract 2 from both sides

$\frac{5}{2}a=32-2\\\\\frac{5}{2}a=30\\\\a=30*\frac{2}{5}\\\\a=6*2$

a = 12 inches

base = $\frac{1}{2}*12+2$

= 6 + 2

Base = 8 inches

6 0

3 years ago

The length, width, and height of the wooden box are 12.3 inches, 6.4 inches, and 7.5 inches respectively. The cost of painting t

PIT_PIT [208]

Answer:

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Step-by-step explanation:

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3 years ago

I need help please help me

alexdok [17]

It’s 3 because 15\5 is 3

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3 years ago

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