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kiruha [24]
4 years ago
10

What is the factored form of the expression? 120y^2 – 63y – 147

Mathematics
1 answer:
ANTONII [103]4 years ago
6 0

Answer:

3(5y   -     7)(8y +   7  )

Step-by-step explanation:

120y^2 – 63y – 147

Factor out a 3

3(40y^2 -21y -49)

40 = 1*40, 2*20  4*10  5*8

49 = 1*49 and 7*7

We need to play with the combinations to get -21 when added together

I will try

3(5y        7)(8y    7  )

We need the bigger one to be negative

5*7  + -8*7 = 35-56 = -21

So the 7 that multiplies by the 8 must be negative

3(5y   -     7)(8y +   7  )

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I think the best answer is (-5x)+6y=36
6 0
4 years ago
Jon is making hamburgers for a church lunch. He has 42 2/3 lbs of ground beef . How many 1/3 pound hamburgers can he make using
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3 years ago
What is the ratio of these plz help​
tatyana61 [14]

Step-by-step explanation:

1. Ratio(White to black) = 12 / [52 - 12]

Ratio(White to black) = 12 / [40]

Ratio(White to black) = 3 / 10 = 3:10

2. Ratio(Blue triangle to all) = 5 / [5+80]

Ratio(Blue triangle to all) = 5 / [85]

Ratio(Blue triangle to all) = 1 / 17 = 1:17

3. Ratio(Circle to all) = 76 / [22+76]

Ratio(Blue triangle to all) = 76 / [98]

Ratio(Blue triangle to all) = 38 / 49 = 38:49

4. Ratio(Yellow triangle to blue) = 18 / 14

Ratio(Yellow triangle to blue) = 9 / 7 = 9:7

5. Ratio(Yellow triangle to blue) = 42 / 6

Ratio(Yellow triangle to blue) = 7 / 1 = 7:1

6.Ratio(Boys to all) = 63 / [27 + 63]

Ratio(Boys to all) = 63 / 90

Ratio(Boys to all) = 7 / 9 = 7:9

6 0
3 years ago
When signing up for a new checking account you answer "No" and opt out of overdraft protection. On this day, you have $10 in you
Rus_ich [418]

Answer:

You may likely be charged an Overdraft fee or amount on each of the transactions carried out by you and you will have to repay the bank the overdrawn amount.

Step-by-step explanation:

Based on the information given we were told that you opt out of an overdraft protection which means that in a situation were you have the amount of $10 in your bank account in which you carried out some transactions with your debit card such as buying lunch for the amount of $12, movie ticket for the amount of $12 and as well dinner for the amount of $15 the end result is that their is likelihood of you to be charged an overdraft fee or an overdraft amount on each of the transaction carried out by you and secondly you will also need to repay or pay back the bank for the amount of money overdrawn which is $29 calculated as :

Amount overdrawn =[($12+$12+$15)-$10]

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Amount overdrawn =$29

4 0
4 years ago
Nick has $7.00. Bagels cost $0.75 each.
OlgaM077 [116]

Answer: 0.75x + 1.29y ≤ 7.00

Step-by-step explanation:

Let the number of bagels be x

Let the number of containers of cream cheese be y

Nick can only spend less than or equal to $7

0.75x + 1.29y ≤ 7.00

4 0
3 years ago
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