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3 years ago

Which three ordered pairs complete the table to give solutions of the equation y = x – 4?

1 answer:

7 0

$1)x=-3,\:y=-7 \\ =>-7=-3-4=>-7=-7 \\ \\ 2)x=0,\:y=-4 \\ =>0-4=-4 \\ \\ 3)x=3,\:y=-1 \\ =>-1=3-4 \\ \\ \\ \framebox[1.1\width]{The correct answer is:A} \par \\ \framebox[1.1\width]{Good Luck!} \par$

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The area of a rectangle is 252 cm², and the length is 3 less than 2 times the width. Find the dimensions of the rectangle.

SSSSS [86.1K]

Answer:

21cm, 12cm

Step-by-step explanation:

width=x cm

length=2x-3 cm

area= 252cm²

l*b= 252 cm²

(2x-3)(x)=252

2x²-3x= 252

this is how I did it

we need to find the nearest square of the number (it should be lesser than the area)

that is 225, whose square root is 15.

since there is a coefficient to the x², the value of x would be calculate like this 15- (2+1)= 15-3 = 12

x= 12

we can verify it too,

2*(12)² - 3*12=252

288-36=252

252=252

therefore width is 12 cm and width is 2*12-3= 24-3= 21 cm

verify;

21*12= 252

252=252

hence the dimensions are 12 am (width) and 21 cm(length).

3 0

3 years ago

What’s the answer and the work ?

Phoenix [80]

Answer:

2√14

Step-by-step explanation:

√56

√2^2 x 14

√2^2 √14

2√14

5 0

3 years ago

Find the total surface area

FrozenT [24]

Answer:638

Step-by-step explanation:

7 0

4 years ago

I need to multiply 10,170 by 0.775

Vinvika [58]

Answer:

7881.75

Step-by-step explanation:

10,170x0.775

5 0

3 years ago

Read 2 more answers

Paul's car holds at most 17 gallons of gas. Now it has 9 gallons. Explain how to find the amount of gas he needs in liters. Use

yulyashka [42]

Answer:

30.08 liters of gas.

Step-by-step explanation:

Given:

Paul's car holds at most 17 gallons of gas.

Now it has 9 gallons.

Question asked:

Explain how to find the amount of gas he needs in liters.

Solution:

Capacity of Paul's car = 17 gallons of gas.

Now it has = 9 gallons of gas.

He need more = 17 - 9 = 8 gallons of gas.

Now, we have to convert it into liters:-

As we know:

Given:

1 gallon = 4 quarts ( Unitary method )

8 gallons = $4\times8=32\ quarts$

Now, we will convert it into liters:- ( Unitary method )

1 quart = 0.94 liters

32 quart = $0.94\times32=30.08\ liters$

Thus, he needs 30.08 liters of gas.

4 0

3 years ago