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2 years ago

Solve the system of equations by using the substitution method X+Y=3 X=2Y

Mathematics

1 answer:

Marrrta [24]2 years ago

6 0

Answer:

If you're asking me to solve for Y, y = 1.

Step-by-step explanation:

Simple. If x is 2x y and y = 1, 2 x 1 is 2 plus y being equal to 1 will give you a total of 3. Hope this helped.

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What are the units for the variable in the following scenario?

krek1111 [17]

Answer:

Her grocery bill was $4.62.

Step-by-step explanation:

There is some mistake in question so the correct question is:

Sherry bought 6 apples at 43¢ per apple. She then bought 4 oranges at 51¢ per orange. How much was her grocery bill?

Now, to find the grocery bill.

As the units are given:

43¢ per apple and

51¢ per orange.

$1 = 100¢.

So, the cost of 6 apples = $0.43\times 6=2.58$

Thus, the cost of 6 apples = $2.58

And the cost of 4 oranges = $0.51\times 4=2.04$

Thus the cost of 4 oranges = $2.04

Now, to get the total grocery bill we add the cost of apples and oranges:

$\$2.58+\$2.04$

$=\$4.62$

Therefore, her grocery bill was $4.62.

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2 years ago

Which expression is the factorization of x² + 10x + 21?

Firlakuza [10]

The answer is (x+3)(x+7)

7 0

3 years ago

Two friends start at the same point. they walk in opposite directions for 3 meters, then turn left and walk another 3 meters. th

vladimir2022 [97]

3^2+3^2=18
√ 18 + √18=2√18 or 6√2 meters
They are 6√2 meters apart or approximately 8.49 meters.

3 0

2 years ago

21. what are the excluded values of the function? y= 5/6x-72

tatiyna

you have to calculate the SID number and then take it upon yourself and divided X it's actual number and then there's a chance and the answer would be c.72

4 0

2 years ago

(3, -4), (5, 1) Find the slope of the line through each pair of points?

Alika [10]

Answer:

m = 5/2

m = 2 1/2

m = 2.5

Step-by-step explanation:

8 0

2 years ago