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Art [367]
3 years ago
9

What are the factors of the polynomial 25x^2-16

Mathematics
1 answer:
Dovator [93]3 years ago
3 0

Answer:

(4 + 5x)(-4 + 5x)

Explanation:

Simplifying

25x2 + -16

Reorder the terms:

-16 + 25x2

Factor a difference between two squares.

(4 + 5x)(-4 + 5x)

Final result:

(4 + 5x)(-4 + 5x)

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A seamstress needs to cut 15 inches pieces of ribbon from a roll of ribbon that is 9 feet in length what is the greatest number
Natali [406]

Answer: 36

Step-by-step explanation:

One roll is of length = 9 feet

1 foot = 12 inches

9 feet = 12 *9 = 108 inches

Since there are 5 rolls

So, total length of 5 rolls = 108 * 5 = 540 inches

Since we are given that A seamstress needs to cut 15-inch pieces of ribbon from a roll of ribbon that is 9 feet in length.

We are supposed to find . What is the greatest number of 15-inch pieces the seamstress can cut from 5 of these rolls of ribbon

So, number of 15-inch pieces the seamstress can cut from 5 of these rolls of ribbon:

Hence the greatest number of 15-inch pieces the seamstress can cut from 5 of these rolls of ribbon is 36

4 0
3 years ago
Help me please!!! 45 points to whoever helps!!
kap26 [50]
I don’t know 775 re2566
7 0
2 years ago
Which one have is the coldest temperature negative numbers or positive numbers
aalyn [17]

Answer:

Step-by-step explanat số âm vì số âm < số dương mà nhiệt đọ càng thấp thì càng lạnhion:

6 0
3 years ago
What is 25% of 24?<br> What is 15% of 60?<br> 9 is what percent of 72
JulsSmile [24]

Answer:

6

9

6.48

Step-by-step explanation:

this is the easiest way to solve for percentage:

\frac{part}{whole} =\frac{part}{whole}  Where all the percents (except 100) would go in part

and the whole number would go in whole

\frac{25}{100} =\frac{?}{24}  Then multiply 24 × 25 ÷ 100 = 6

\frac{15}{100} =\frac{?}{60}  Multiply 60 by 25 then divided by 100 = 9

Then for the last one 9 is what percent of 72

all we have to do is multiply 9 and then convert 72 into a decimal (0.72)

Then 9 × 0.72 = 6.48

7 0
3 years ago
What is the rate of change for this table​
Verizon [17]

Answer:

m=-2

Step-by-step explanation:

We will use the formula for rate of change (slope).

m=(y2-y1)/(x2-x1)

Pick any pair of x and y values.

(10-12)/(2-1)

Simplify.

m=-2

HTH :)

5 0
2 years ago
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