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NeX [460]
3 years ago
13

Solve the equation 1/2y - 21/4 = 35/4 for y. Identify the sequence of operations used to solve the equation.

Mathematics
2 answers:
DerKrebs [107]3 years ago
7 0

Answer:

y = 1/28

Step-by-step explanation:

Given the expression:

½y - 21/4 = 35/4

We'll have to Multiply through with the LCM which is (2y * 4 = 8y)

(8y) ½y - (8y) 21/4 = (8y) 35/4

4 - 2y * 21 = 2y * 35

4 - 42y = 70y

4 = 70y + 42y

4 = 112y

Divide through by 112 to make y the subject.

y = 4 / 112

y = 1 / 28

Hoochie [10]3 years ago
5 0

Answer: y = 28

Step-by-step explanation:

Add both sides by 21/4 to cancel out the 21/4 on the left side. 1/2y = 56/4

You can rewrite the fraction 56/4 as 28/2 by dividing the numerator and denominator by 2. 1/2y = 28/2

Multiply both sides by 2 and you get y = 28

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can someone please answer this. like seriously answer it. i’m failing math and i need to bring my grade up.
sp2606 [1]

Answer:

They would need approximately 20 gallons of paint for the water tower, so yes, 25 gallons would be enough.

Step-by-step explanation:

In order to find out if there is enough paint for the surface area of the sphere, you need to first find the radius of the object so you can determine the measure of the entire surface area.  Since they give us the volume, we can use that to solve for the radius using the volume formula:  V = \frac{4}{3}πr³  or 66840.28 = \frac{4}{3}πr³.  Using inverse operations, you can first multiply both sides of the equation by the reciprocal of 4/3 or 3/4, then divide by π, this gives you 15,965 = r³.  In order to find 'r', take the cube root of both sides:  ∛15965 = ∛r³  or r ≈ 25.

Now that you know radius = 25, you can use the formula for surface area:  SA = 4πr²  or 4π(25)² ≈ 7850 ft².  Since one gallon of paint covers 400 square feet, we can take our total and divide by 400 to find the number of gallons:  7850 ÷ 400 ≈ 19.6.  In total, we would need 19.6 gallons of paint for the water tower, so if there are 25 gallons available, there is enough.

6 0
3 years ago
PLEASE ANSWER FAST!Write a clear set of steps for the construction of an equilateral triangle. Use Euclids proposition 1 as a gu
blondinia [14]

Step-by-step explanation:

It's simple here's The steps:

*Step 1

-Take your ruler and a pencil and construct a segment of any length on a piece of paper

-Then, you will try to set your compass opening to match the length of segment AB

-Take your compass. Make your sure that the pencil is included in it.

-Put the needle of the compass at endpoint A and adjust your compass so that the tip of your pencil touches endpoint B

*Step 2

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3 0
3 years ago
What’s 1/4+1/3 equal
Pani-rosa [81]

Answer:

7/12

Step-by-step explanation:

1/4 +1/3

We need to get a common denominator of 12

1/4*3/3 = 3/12

1/3 *4/4 = 4/12

3/12+4/12 = 7/12

5 0
3 years ago
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Ludmilka [50]

Answer:

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Step-by-step explanation:

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3 years ago
PLEASE HURRY
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3 years ago
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