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3 years ago

7

a car uses 57 liters of gasoline for every 644 kilometers traveled. it takes 8 hours to use all the gasoline in the tank. what i

s the average speed of the car during the trip?

1 answer:

devlian [24]3 years ago

8 0

Answer:

80.5 kilometers/h

Step-by-step explanation:

S=80.5km/h

D644

T8 hours

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HELP ASAP WHAT IS THIS ANSWER

postnew [5]

Answer:

Step-by-step explanation:

x = 1/2 ( a + b)

x = 1/2 (129 + 71)

x = 1/2 (200)

x = 100 °

you just have to remember that formula

7 0

3 years ago

Sophia uses 18 beads to make a necklace. Three sixths of the beads are purple. How many beads are purple?

joja [24]

Answer:

9 beads are purple

Step-by-step explanation:

we know that

To find out how many beads are purple, multiply the total beads by the fraction of the beads that are purple

so

$18(\frac{3}{6})=9\ beads$

therefore

9 beads are purple

Another way to solve the problem is convert the fraction in percentage

we have

$\frac{3}{6}=\frac{1}{2}=0.50*100=50\%$

so

If the total are 18 beads

50% is 9 beads

therefore

9 beads are purple

8 0

3 years ago

Your help is deeply is appreciated.

MrRa [10]

Answer:

x = 3

Step-by-step explanation:

$\\4x^2-2x=30\\\\x=3\\4(3)^2-2(3)=30\\4(9) - 6 =30\\36 - 6 = 30\\30 = 30 \\\\x=4\\4(4)^2-2(4)=30\\4(16) - 8 =30\\64 - 8 = 30\\56\neq 30$

56 is not equal to 30

6 0

3 years ago

Read 2 more answers

PLEASEE help me please I’m so confused :( marking the first best answer as brainliest

mixas84 [53]

I wrote it roughly.

Hope it helps.

I am sorry.

7 0

3 years ago

Read 2 more answers

The graph represents the rate of two machines that fill water barrels. One machine has already filled 30 water barrels before th

Katena32 [7]

The answer is B!
Hoped I helped!

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3 years ago