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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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Is 24+8 sometimes equivalent to 4 (6+2x)
velikii [3]
If ya distribute it it comes together as 24 + 8x soo i hope this helped
5 0
3 years ago
Read 2 more answers
Nate and his friends are building a skateboard ramp for an upcoming contest. The length of the ramp on the blueprint is 7.6 inch
ICE Princess25 [194]

Answer:

30.4 feet.

Step-by-step explanation:

We have been given the length of the ramp on the blueprint is 7.6 inches.  The scale on the blueprint is 1 inch to 4 feet. We are asked to find the actual length of the ramp.

We will use proportions to solve our given problem as:

\frac{\text{Actual length}}{\text{Scale length}}=\frac{4\text{ ft}}{1\text{ inch}}

Now, we will substitute the scale length of ramp in our proportion as:

\frac{\text{Actual length}}{7.6 \text{ Inches}}=\frac{4\text{ ft}}{1\text{ inch}}

\frac{\text{Actual length}}{7.6 \text{ Inches}}\cdot 7.6 \text{ Inches}=\frac{4\text{ ft}}{1\text{ inch}}\cdot 7.6 \text{ Inches}

\text{Actual length}=4\text{ ft}\cdot 7.6

\text{Actual length}=30.4\text{ ft}

Therefore, the actual length of the ramp would be 30.4 feet.

7 0
3 years ago
PYTHAGOREAN THEOREM
Sav [38]

Answer:

the answer is 29

Step-by-step explanation:

a^2 + b^2 = c^2 (btw ^ means to the power)

a and b are the legs. c is the hypotenuse

21^2 + 20^2 = c^2

441 + 400 = 481

then we have to square it.

the square root of 481= 29.

btw the hypotenuse is always going to be bigger than the legs.

hope it helps!! btw it is right!

7 0
2 years ago
Read 2 more answers
PLEASEEE HELP ME I NEED HELP REAL BAD ON THIS PROBLEM A MILLION THANKS IF YOU HELP ME!!**NO LINKS**THANK YOU SOOOO MUCH!! =D
Sav [38]

Answer:

hmmmmmm look on Firefox

8 0
3 years ago
The florida panther has an average height of 30 inches. It is 20 inches taller than the northern mockingbird. Write and solve an
sleet_krkn [62]
30-20=x 30 for the height of panther and 20in taller so u subtract 20 from 30
3 0
3 years ago
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