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3 years ago

What is the answer for y=2x-5 and 4x-y=7

1 answer:

4 0

Substitute the first equation into the second equation. You will get:

4x - (2x - 5) = 7

Distribute the negative sign into the parenthesis:

4x - 2x + 5 = 7

Simplify

2x + 5 = 7

Subtract 5 on both sides

2x = 2

x = 1

Now, substitute x = 1 into the first equation:

y = 2(1) - 5

y = 2 - 5

y = -3

The solution to the system of equations is (1, -3).

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Answer:

i d k n

Step-by-step explanation:

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3 years ago

How much of the circle is shaded? simply your answer

Black_prince [1.1K]

Answer:

The part that is shaded is 5/14

Step-by-step explanation:

The total circle is 1

1/2 + 1/7 + x = 1 where x is the shaded area

Multiply each side by 14 to get rid of the fractions

14(1/2 + 1/7 + x) = 1*14

7 + 2 + 14x = 14

9+14x = 14

Subtract 9 from each side

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Divide by 14

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6 0

3 years ago

The sum of 25/4 and three times a number is equal to 3/4 subtracted from four times the number. find the number

stich3 [128]

For an instance, n represents the number
$\frac{25}{4}+n=4n- \frac{3}{4}$
$n-4n=-\frac{3}{4}-\frac{25}{4}$
$-3n=-\frac{28}{4}$
$n=-\frac{28}{4} \times -\frac{1}{3}$
$n= \frac{28}{12}$
$n= \frac{7}{3}$

The number is 7/3

5 0

3 years ago

How to round 47,397 to the nearest ten

valina [46]

47397 nearest 10 is 47400

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3 years ago

A bathtub contains 12 gallons of water. With these 12 gallons, the bathtub is only 30% full. How many gallons of water can the b

Pachacha [2.7K]

Answer:

40 gallons

Step-by-step explanation:

Let the number of gallons that would completely fill the bathtub be represented by N.

Since 12 gallons of water gives 30% of the number of gallons to fill the bathtub, then;

30% of N = 12

$\frac{30}{100}$ x N = 12

30N = 12 x 100

30N = 1200

divide both sides by 30,

N = $\frac{1200}{30}$

= 40

The number of gallons that would completely fill the bathtub is 40 gallons.

6 0

3 years ago