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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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A car dealership sells SUVs and passenger cars . For a recent year, 80 more SUVs were sold than passenger cars. If a total of 51
MAVERICK [17]

Answer:

295 SUVs were sold, and 215 passenger vehicles.

Step-by-step explanation:

Let s and p represent the number of SUVs and p the number of passenger cars.  

Then s = p + 80 and s + p = 510.

Substitute p + 80 for s in the second equation, obtaining:

p + 80 + p = 510, or:

2p = 430

Dividing both sides by 2 isolates p:  p = 215.

Since s = p + 80, we add 80 to 215 here, obtaining s = 295.

295 SUVs were sold, and 215 passenger vehicles.

3 0
4 years ago
The graph of a system of equations with the same slope and the same y-intercepts will have no solutions.
Liula [17]
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4 0
3 years ago
Can you think of a situation where comparing two fractions directly is easier than converting them to decimal or percents in ord
Andrei [34K]

when you are comparing 1/2 to 3/6. this is because you know that 1/2 is equal to 3/6. You are very welcome, and thank you for the challenge.

6 0
3 years ago
Which expression is equivalent to the given expression?
Studentka2010 [4]
Which expression is equivalent to the given expression?

15(12-x)

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hope this help
4 0
3 years ago
I'm really bad at these questions
Diano4ka-milaya [45]

Answer:

30 centimeters^2

Step-by-step explanation:

The area of a triangle can be found using the following formula.

A= (b*h)/2

In this triangle, the base is 12 cm. The height is 5 cm, since it forms a right angle with the base.

b= 12 cm

h= 5 cm

A= (12 cm * 5 cm) / 2

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A= (60 cm^2) / 2

Divide 60 cm^2 by 2

A= 30 cm ^2

The area of the triangle is 30 square centimeters.

6 0
3 years ago
Read 2 more answers
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