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diamong [38]
1 year ago
7

Which of these is a correct expansion of (3x − 1)(4x² + 5)?

Mathematics
1 answer:
My name is Ann [436]1 year ago
8 0
The correct expansion is B. 3x. 4x^2 + 3x•5 + (-1) • 4x^2+ (-1) • 5
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2 years ago
T had 53,790 miles onit. They had the car for 8.25 years. On average, how many miles did they drive per year?
liq [111]

Answer: ‭6,520‬ miles per year

Step-by-step explanation:

They had driven the car for 53,790 miles in 8.25 years.

The average number of number of miles driven per year is:

= 53,790 / 8.25 years

= ‭6,520‬ miles per year

<em>They drove an average of ‭6,520‬ miles per year.</em>

7 0
2 years ago
A used book store also started selling used CDs and videos. In the first week, the store sold 40 used CDs and videos, at 4.00 pe
masha68 [24]

Answer:

30 CDs and 10 Videos were sold.

Step-by-step explanation:

Given that a used book store also started selling used CDs and videos. In the first week, the store sold 40 used CDs and videos, at 4.00 per CD and 6.00 per video.

The sales for both CDs and videos totaled to 180.00.

Let CDs be x and Videos be y

Then we have x+y =3040

and 4x+6y = 180

Two simultaneous equations in two variables and can be solved by elimination method

multiply I equation by 4 and subtract from II.

2y = 20

y =10

x = 30

30 CDs and 10 Videos were sold.

4 0
3 years ago
PLS I RLLY NEED HELP I MIGHT GIVE BRAINLIEST Just pls help
Lena [83]

Answer:

y=3x-7

step by step explaination:

4 0
3 years ago
Read 2 more answers
ASAP WHATS THE ANSWER???
katrin [286]

Answer:

algebraic expression as they used variables

7 0
3 years ago
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