All categories

3 years ago

Factor the expression. 9b^2-25

Mathematics

1 answer:

Masteriza [31]3 years ago

3 0

you must factorize it as a difference of squares

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

9b^2-25 = (3b)^{2-(5)^2= (3b-5)(3b+5)

You might be interested in

Help with question 4 please

Juliette [100K]

Answer: y=5 x=11

abc=def

ab=de <b=<e

17y-8=12+13y 11x-4=117

-13y -13y +4 +4

4y-8=12 11/11x=121/11

+8 +8 x=11

4/4y=20/4

y=5

7 0

2 years ago

Simplify: 3c-5d+5d Pls

Arturiano [62]

Answer:

3 c

Step-by-step explanation:

Simplify the following:

5 d - 5 d + 3 c

Hint: | Combine like terms in 5 d - 5 d + 3 c.

5 d - 5 d = 0:

Answer: 3 c

5 0

3 years ago

Read 2 more answers

Julian has to read 4 articles for school. He has 8 nights to read them. He decides to read the same number of articles each nigh

daser333 [38]

Answer:

a. He will have to read half an article per night

b. Fraction of the reading assignment read each night = $\frac{0.5}{4}=\frac{1}{8}$

Explanation:

Part a:

We are given that:

number of articles to read = 4 articles

number of nights = 8 nights

To get the number of articles that he should read per night, we will simply divide the the number of articles by the number of nights

Therefore:

number of articles to read per night = $\frac{4}{8}=\frac{1}{2}$ articles per night

Part b:

Now, we know that he will read half an article each night from a total of 4 articles

To get the fraction of the reading assignment read each night, we will divide the number of articles read each night by the total number of assignments

Therefore:

Fraction of the reading assignment read each night = $\frac{0.5}{4}=\frac{1}{8}$

Hope this helps :)

5 0

2 years ago

How do i do this without using pdf or power point plz help

dexar [7]

Grab some paper, a pencil, and a ruler. Make a 6 by 6 square

7 0

2 years ago

Read 2 more answers

The perimeter of an equilateral triangle is p and the length of a side is s.

kompoz [17]

Answer:

s=7

p=3s

Step-by-step explanation:

The perimeter is the side length times 3

So the equation would be p=3s

Plug in 21 for p

21=3s

That means s=7

8 0

2 years ago