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3 years ago

PLEASE HELP WILL GIVE BRAINLIEST

Mathematics

1 answer:

quester [9]3 years ago

8 0

Answer:

The answer is the same for all of the boxes. It is 3 gallons.

Step-by-step explanation:

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Solve for x and y <br> x+y=1<br> 2y-x=8

lara31 [8.8K]

Answer:

(- 2, 3 )

Step-by-step explanation:

Given the 2 equations

x + y = 1 → (1)

2y - x = 8 → (2)

Adding the 2 equations term by term will eliminate the x- term

(x - x) + (y + 2y) = (1 + 8), that is

3y = 9 ( divide both sides by 3 )

y = 3

Substitute y = 3 into either of the 2 equations and solve for y

Substituting y = 3 in (1)

x + 3 = 1 ( subtract 3 from both sides )

x = - 2

Solution is (- 2, 3 )

7 0

3 years ago

last night, julie's pet hamster zoe kept julie awake for at least an hour running on her exercise wheel and scratching at the co

borishaifa [10]

Answer: $x+y\geq 1$ , $x>\frac{1}{4}$ , $x\geq 2y$ and $y\geq 0$

Step-by-step explanation:

Here, x represents the number of hours Zoe spent running on her wheel and y represents the number of hours spent scratching her cage.

Julie was awoke for at least an hour running on her exercise wheel and scratching the of her cage.

⇒ $x+y\geq 1$

She ran on her wheel at least twice as long as she scratched at the corners of her cage.

⇒ $x\geq 2y$

Also, She spent more than 1/4 hour running on her wheel.

⇒ $x>\frac{1}{4}$

And, we know that number of hours can not be negative.

⇒ $y\geq 0$

Therefore, the complete system of inequality which shows the given situation is,

$x+y\geq 1$ , $x>\frac{1}{4}$ and $x\geq 2y$ , $y\geq 0$

Note: the feasible region ( covered by the given system) is shown in the below graph.

6 0

3 years ago

Why is it useful to factor polynomial expressions for a given scenario?

White raven [17]

To determine the roots or the zeros of the polynomial. These are the x-intercepts.

3 0

2 years ago

I REALLY NEED HELP PLEEEASS Evelyn has $524.96 in her checking account. She must maintain a $500 balance to avoid a fee. She wro

m_a_m_a [10]

The answer is the first one. 524.96 - 32.50 + x ≥ 500; x ≥ $7.54

3 0

3 years ago

Read 2 more answers

What percent of 30,000 equals 22,500

Brrunno [24]

Divide 22,500 by 30,000 and multiply by 100 as follows:
$\frac{22500}{30000}\times100=75%$

4 0

2 years ago