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3 years ago

15 pts + brainliest to right/best answer

Mathematics

2 answers:

svetlana [45]3 years ago

8 0

Answer:

(2x-5) (2x+5)

Step-by-step explanation:

4x^2 -25

This is the difference of squares

a^2 - b^2 = (a-b) (a+b)

(2x)^2 - 5^2

(2x-5) (2x+5)

ZanzabumX [31]3 years ago

6 0

Rewrite it in the form a^2 - b^2, where a = 2x and b = 5

(2x)^2 - 5^2

Use the Difference o Squares: a^2 - b^2 = (a + b)(a - b)

(2x + 5)(2x - 5)

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A manufacturer samples 100 wires for quality testing. 4 wires were found defective. if 750 were produced in 1 hour how many shou

Andreyy89

30 wires would be defective

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3 years ago

What value of cc will complete the square below and make the expression a perfect square trinomial?

Sav [38]

Question: What value of c will complete the square below ( $x^{2} +30x+c$ ) and make the expression a perfect square trinomial?

Answer: c = 225

Step-by-step explanation:

Perfect square trinomials come in the form a² + 2ab + b², which is equal to (a + b)². In the presented trinomial, we can immediately identify that a = x, and b² = c, but we need to find the numerical value of $c$ .

To do this, note that the middle term, or 2ab, corresponds with (is equal to) 30x. We know that a = x, and thus, 2ab = 2bx. Now, 2bx and 30x are corresponding terms; thus, 2bx = 30x.

Dividing by $2x$ on both sides gives us b = 15. Therefore, c = b² = 15² = 225. (As a squared binomial, this would be (x + 15)² as a = x and b = 15.)

4 0

1 year ago

How to do I don't know how to do can u help me pls. Thanks you

melomori [17]

Alright.
So, we have 2185 student in Rose.
Lily School has 307 more students than Rose, so Lily has,
2185 + 307 = 2492 Students in Lily School.
Since question a. is asking you to round off to the nearest ten, your answer to part a is 2490.

For part b. add 2185 and 2490.
2185 + 2490 = 4675 students.
The questions want you to round to the nearest hundredth, so,
4700 is the answer to part b.

4 0

3 years ago

Read 2 more answers

Helppppppppp plssssss

sineoko [7]

The first option, the option you selected, and the last option.

An adjacent angle means an angle that shares the same vertex (“center” point) and side.

Hope this helped :)

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2 years ago

Which quadrants are (-4,5) in

zaharov [31]

Answer:

Quadrant 2

Step-by-step explanation:

Take a look at the picture I added it should help you on futures questions like this :)

4 0

3 years ago