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kakasveta [241]
4 years ago
7

Factor –7x3 + 21x2 + 3x – 9 by grouping. What is the resulting expression?

Mathematics
2 answers:
sergeinik [125]4 years ago
4 0
Take the first 2 and take out -7x2. bringing it to (-7x2)(x-3)+(3x-9)
then take out 3 on the right side.
-7x^2 (x-3)+3 (x-3)
factors to (3-7x2)(x-3)
den301095 [7]4 years ago
4 0

Step-by-step explanation:

take the first 2 and take out -7x2. bringing it to (-7x2)(x-3)+(3x-9)

then take out 3 on the right side.

-7x^2 (x-3)+3 (x-3)

factors to (3-7x2)(x-3)

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Which ratio forms a proportion with 25/35 . A. 3/5 B. 15/21 C.24/34 D. 5/11
iogann1982 [59]
In order to find this out, we just needed to find out which one has the same smallest fraction

25 / 35. Divided this by 5 and we will get 5/7 >>> smallest fraction

15/21 . Divided this by 3 and we also will get 5/7 >> smallest fraction

So the answer would be  : B. 15/21 

hope this helps



3 0
3 years ago
A bicyde rental company charges a $20 fee plus $5.50 per hour to rent a bicycle. Another bicycle rental
vekshin1

Answer:

Company 2 would be cheaper

Step-by-step explanation:

<u>Company 1 </u>                                       <u>Company 2</u>

20+5.5h                                          15+6.5h

20+5.5                                           15+6.5

25.5                                               21.6

8 0
3 years ago
Jazmin is completing an art project. She has two pieces of construction paper. The first piece is 4 4 4444 inches wide and the s
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Answer:

Each strip should 11 inches wide.

Step-by-step explanation:

We are told that Jazmin has two pieces of construction paper. The first piece is 44 inches wide and the second piece is 33 inches wide. Jazmin wants to cut the paper into strips that are equal in width and are as wide as possible.

To find the greatest possible width of each strip we will find GCF of 44 and 33.

Factors of 44 are: 1, 2, 4, 11, 22, 44.

Factors of 33 are: 1, 3,11, 33.

We can see that 11 is the greatest common factor of 44 and 33 as 11*4=44 and 11*3=33, therefore, Jasmine should cut each strip 11 inches wide.

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