3 years ago

♦Will mark brainliest♦

Mathematics

1 answer:

pickupchik [31]3 years ago

8 0

Answer:

24 56 76 87

Step-by-step explanation:

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David wants to fill his backyard swimming pool. His garden hose delivers 40 gallons in 5 minutes. How many gallons of water will

svetlana [45]

Answer:

Part a) $160\ gallons$

Part b) $480\ gallons$

Step-by-step explanation:

Part a) How many gallons of water will be in the pool after 20 minutes?

we know that

Using proportion

$\frac{40}{5}\frac{gallons}{minutes}=\frac{x}{20}\frac{gallons}{minutes} \\ \\x=40*20/5\\ \\x=160\ gallons$

Part b) How many gallons of water will be in the pool after 1 hour

we know that

1 hour = 60 minutes

Using proportion

$\frac{40}{5}\frac{gallons}{minutes}=\frac{x}{60}\frac{gallons}{minutes} \\ \\x=40*60/5\\ \\x=480\ gallons$

5 0

3 years ago

What are the solutions of x2 = 8 - 5x?

jonny [76]

Answer:

That can be re-written:

x^2 + 5x -8 = 0

We use the Quadratic Formula

a=1

b = 5

c = -8

x = [-b +- sq root (b^2 - 4ac) ] / 2a

x = [-5 +- sq root (25 - - 32)] / 2

x1 = [-5 + sq root (57)] / 2

x1 = 1.27491722

x2 = [-5 - sq root (57)] / 2

x2 = -6.2749172176

Step-by-step explanation:

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4 years ago

True of false: 1+1 has the same answer as 1x1

Goshia [24]

Answer:

False

Step-by-step explanation:

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3 years ago

Read 2 more answers

How can using reciprocals help you divide fractions

tresset_1 [31]

When you divide fractions, you change each to its reciprocal, then you look multiply them. Using reciprocals helps you easily solve the problem.

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3 years ago

Locate the prepositional phrase and type it in the blank. Then, identify the function of the phrase. Above the door hung a horse

olga_2 [115]

“Above the door” is the prepositional phrase but I can’t help you you it’s the second part, sorry.

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3 years ago