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Anvisha [2.4K]
3 years ago
15

4w^2+49=-28w solve for w plz answer

Mathematics
1 answer:
boyakko [2]3 years ago
3 0

Move all terms to one side

4w^2 + 49 + 28w = 0

Rewrite 4w^2 + 49 + 28w in the form a^2 + 2ab + b^2, where a = 2w and b = 7

(2w)^2 + 2(2w)(7) + 7^2 = 0

Use the Square of Sum: (a + b)^2 = a^2 + 2ab + b^2

(2w + 7)^2 = 0

Take the square root of both sides

3w + 7 = 0

Subtract 7 from both sides

2w = -7

Divide both sides by 2

<u>w = -7/2</u>

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Pls help thanks, i’ll give brainliest if you give me a correct answer
Citrus2011 [14]

Answer:

Equation : \frac{5}{7}x = \frac{5}{4}

Gallons needed = 1\frac{3}{4} gallons

Step-by-step explanation:

It is given that:

Gallons of paint used by Tyler = 1\frac{1}{4} = \frac{5}{4}

Area of fence painted = 5/7

Let,

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\frac{5}{7}x = \frac{5}{4}

Because we know that 5/7 of the fence is painted with 5/4 gallons of paint.

Multiplying the equation with 7/5

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Therefore,

Equation : \frac{5}{7}x = \frac{5}{4}

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7 0
3 years ago
arnold's dog weighs 10 pounds less than twice his brothers dog.The dogs' combined weight is 50 pounds
Harlamova29_29 [7]

Answer:

If I am not wrong Arnold's dog weights 20 and his brother 30 because if the total is 50 add 10 then divide by 3 and you get 30 ( dog of brother)  

50 - 30 = 20

Step-by-step explanation:

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4 years ago
How many pounds of Brazilian coffee costing $8 per pound must be mixed with 33 lbs of Columbia coffee costing $2 per pound to pr
vredina [299]

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Hope this helps!

~LENA~

3 0
3 years ago
Thirty-two is the product of nine and a number decreased by four
Arte-miy333 [17]

Answer:

28

Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
PLEASE ANSWER QUICKLY!
jasenka [17]

Answer:

once you have a common denominator, you simply add the numerators together and then simplify.

Step-by-step explanation:

6 0
3 years ago
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