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3 years ago

Choose whether each sum is positive or negative.

Mathematics

1 answer:

igomit [66]3 years ago

8 0

Negative
Positive
Positive
Negative

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Simplify. 1/3 (-512)

pychu [463]

Answer:

-170.6666667

Step-by-step explanation:

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3 years ago

3.9 + x = -8 what is x

jarptica [38.1K]

Answer:

x=-11.9

Step-by-step explanation:

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3 years ago

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While riding on a carousel, Angela travels a distance of 65 meters every 15 seconds. What is her speed in kilometers per hour?

Goshia [24]

Answer:

15,600 meters

Step-by-step explanation:

there are 3600 seconds in an hour. if you divide that by 15 you get 240. multiply 65 by 240 (which is every 15 seconds) and you get 15,600

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3 years ago

If the walls are 9' high, how much paint would I need to buy to paint the walls of all three bedrooms?

ludmilkaskok [199]

Answer:

The required paint for a total of $1.404\ ft^{2}$ is approximate 6 gallons

Step-by-step explanation:

we know that

To find how much paint would I need to buy to paint the walls of all three bedrooms, calculate the area of all three bedrooms

Master Bedroom

The area is equal to

$A1=(16+16+12+2+18)*9=576\ ft^{2}$

2 Bedroom

The area is equal to

$A2=(12+14+10+10)*9=414\ ft^{2}$

3 Bedroom

The area is equal to

$A3=(10+10+14+10+2)*9=414\ ft^{2}$

The total area is equal to

A=A1+A2+A3

$A=576+414+414=1.404\ ft^{2}$

Approximate one gallon of paint covers 250 square feet

$1.404/250=5.6\ gal$

7 0

4 years ago

Help me please right away

umka2103 [35]

${t}^{2} = \frac{4b {x}^{2} }{k} \\ k {t}^{2} = 4b {x}^{2} \\ \frac{k {t}^{2} }{4b} = {x}^{2} \\ x = \sqrt{ \frac{k {t}^{2} }{4b} } = 0.5t \sqrt{ \frac{k}{b} }$

3 0

3 years ago