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Inga [223]
3 years ago
13

Factor this expression completely x^2 - 9

Mathematics
1 answer:
tekilochka [14]3 years ago
8 0
x^2-9=(x-3)(x+3)
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1. Solve for w in the equation W/5 = 25<br> A.W = 5<br> B.W = 125<br> C. W = 30<br> D.W = 20
vekshin1

Answer: <em>w = 125</em>

Explanation: Since <em>w</em> is being divided by 5, to solve for <em>w</em>,

multiply both sides of the equation by 5.

On the left side, the 5's will cancel

and on the right side, 25(5) is 125.

So <em>w = 125</em>.

<u />

<u>Please do not do this problem in your head.</u>

Show the work that it takes to get <em>w</em> by itself.

3 0
4 years ago
Brandon used 1 2
MrRa [10]

Answer:

5\dfrac{1}{2}\ \text{kg}

Step-by-step explanation:

Plant food used on strawberry plants is

1\dfrac{2}{3}\ \text{kg}=\dfrac{5}{3}\ \text{kg}

Plant food used on tomato plants is

\dfrac{1}{4}\ \text{kg}

Feeding the strawberry plants two times means

\dfrac{5}{3}+2\times\dfrac{5}{3}=\dfrac{5}{3}+\dfrac{10}{3}\\ =\dfrac{15}{3}=5\ \text{kg}

Feeding the tomato plants one more time means

\dfrac{1}{4}+\dfrac{1}{4}=\dfrac{2}{4}\\ =\dfrac{1}{2}\ \text{kg}

The plant food he will need is 5+\dfrac{1}{2}=5\dfrac{1}{2}\ \text{kg}

3 0
3 years ago
What is the perimeter of the polygon in the diagram?
rusak2 [61]

Answer:

The correct answer is:

<em><u>D.</u></em><em><u> </u></em><em><u>4</u></em><em><u> </u></em><em><u>√</u></em><em><u>a</u></em><em><u>²</u></em><em><u> </u></em><em><u>+</u></em><em><u> </u></em><em><u>b</u></em><em><u>²</u></em>

3 0
3 years ago
How many years will it take for 20$ to grow to 100 if the simple interest rate is 4% annually
cestrela7 [59]

The formula for simple interest is:

Total = Principal(1+ Rate x time)


You are given:

Total = $100

Principal = $20

Rate = 4%


You are asked to find the time.

Replace everything known in the formula:


100 = 20(1 +0.04 x Time)

Now solve for Time:

Divide each side by 20:

5 = 1 + 0.04 x Time

Subtract 1 from each side:

4 = 0.04 x time

Divide each side by 0.04:

Time = 4 / 0.04

Time = 100 years.



3 0
3 years ago
Which represents a line that is parallel to x-4y=16?
elena-14-01-66 [18.8K]

Answer:

pretty sure its A

Step-by-step explanation:

4 0
3 years ago
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