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jek_recluse [69]
2 years ago
12

Need help fast! Solve for y and a if possible please

Mathematics
1 answer:
dezoksy [38]2 years ago
3 0
Where is the question?
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PLZZ I WILL GIVE BRAINLIST PLEASE ANSWER ASAP!!!!
lora16 [44]

Answer:

Option C. -3x^2-13x-5

Step-by-step explanation:

we know that

To find how much greater is the area of room A than the area of room B. subtract the area of room B from the area of room A

so

(5x^{2}-7x-6)-(8x^{2}+6x-1)\\ \\= (5x^{2}-7x-6)-8x^{2}-6x+1\\ \\=(5x^{2}-8x^{2})+(-7x-6x)+(-6+1)\\ \\=-3x^{2} -13x-5

8 0
2 years ago
An object is thrown from a platform. Its height (in meters), x seconds after launch, is modeled by h (x) = -5 (x + 1) (x -9)
777dan777 [17]

Answer:

Step-by-step explanation:

This is already factored for us, which is really nice, so now all we need to do is apply the Zero Product Property to the sets of parenthesis and solve for x, which will give us the 2 times that the object is on the ground.

x + 1 = 0 so

x = -1

x - 9 = 0 so

x = 9

We all know that time cannot ever be negative, so the time that the object is on the ground is 9 seconds after it's launched (which was from an initial height of 45 meters).

8 0
3 years ago
Please help me i need this really bad
lesya [120]
The answer is 3
Multiply 6 by 3 to get the total amount of money for the books then minus the answer 18 which you get from 6 x 3 = 18
Then minus 18 from 21 to get $3
21 - 18 = 3
7 0
3 years ago
Read 2 more answers
Please help, im seriously stuck on this
Rasek [7]

Answer:

x=64

Step-by-step explanation:

the shapes are similar

since the difference between 20 and 24 is 4

then you add 4 to 60 and get 64

I don't actually know 100% that this is correct but it makes sense in my head

7 0
3 years ago
HELP PLEASE! WILL MARK U BRAIN-LIST
Semmy [17]

Answer:

D. 10.20 cm

Step-by-step explanation:

7 0
2 years ago
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