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cestrela7 [59]
3 years ago
15

Factor the following plynomial comletely -9x^2-30x-25

Mathematics
1 answer:
Semenov [28]3 years ago
3 0

the answer is....

- (3x +  {5})^{2}

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Rob is two times as old as Jake. Three years ago the sum of their ages was 21 years. Find their present ages?
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Rob is 18
Jake is 9

21-15=6
6+3=9
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(No clue how I got 15 )
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Write -70.075 as a mixed number.
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-70.075

Step-by-step explanation:

it's answer hope it helps you

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Is the expression 2 • 4' equal to the expression 8x?Explain your answer
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Yes

Step-by-step explanation:

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A rectangular prism has dimensions of 8 cm by 9 cm by 10 cm. <br><br> What is its volume?
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7 0
3 years ago
Help guys pleaseeeee
kkurt [141]
<h2>Answers:</h2>

Exercise 34.

4t+72\geq  400 and t\leq82.

Exercise 35.

30t-4.

<h2>Step-by-step explanation:</h2>

<h2><u>Exercise 34.</u></h2>

1. Forming the inequality.

Let's make the left side be a calculation of the total earning based on the number of tickets sols. Also, let's make the right side the cost of the dance to compare and find an adecuate minimum value of x.

4t+72\geq  400.

<em>We use the </em><em>"greater or equal to"</em><em> symbol because the side of x expresses the earning of the committee, and these earnings will have to be equal or greater than the cost of the dance to be able to organize the dance.</em>

2. Solving the inequality.

4t+72\geq 400\\ \\4t\geq 400-72\\ \\4t\geq 328\\ \\t\geq\frac{328}{4} \\ \\t\geq82

3. Express your results.

t\leq82, therefore, the dance committee will have to sell at least 82 tickets to be able to cover the cost of the dance.

<h2><u>Exercise 35.</u></h2>

2-6(-5t+1)

<em>Apply the associative property of multiplication.</em>

<em>Rule to be applied: </em>a(b+c)=ab+ac.

2+(-6)(-5t)+(-6)(1)=\\ \\2+30t-6\\ \\30t-4

Result.

30t-4.

4 0
2 years ago
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