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Lana71 [14]
3 years ago
15

If 3a + b + c = -3, a+3b+c = 9, a+b+3c = 19 find a*b*c

Mathematics
1 answer:
VashaNatasha [74]3 years ago
5 0

Answer:

a=-4

b=2

c=7

so therefore a*b*c=-4*2*7

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Find the surface area of a square pyramid with a base length of 24 cm and a height of 16 cm. Explain how you solved the problem.
icang [17]

Answer:

the answer b

Step-by-step explanation:

[surface area]=[area of 4 triangles sides]+[area of square base]

[area of square base]=24*24--------> 576 cm²

[area of one triangles side]

l=slant height

l²=16²+12²-------> l²=400-----------> l=20 cm

[area of one triangles side]=24*20/2--------> 240 cm²

[area of 4 triangles sides]=4*240----------> 960 cm²

[surface area]=[960]+[576]--------> 1536 cm²

6 0
3 years ago
If f(x) = 3x^2 - 4x + 5 and g(x) = 2x^2 + 2,<br> find f(x) – g(x).<br><br> Answer: x^2 - 4x + 3
Nadusha1986 [10]

Answer:

f(x) – g(x) = x^2 - 4x + 3

Step-by-step explanation:

f(x) = 3x^2 - 4x + 5 and g(x) = 2x^2 + 2,

f(x) – g(x) = 3x^2 - 4x + 5 - ( 2x^2 + 2)

Distribute the minus sign

f(x) – g(x) = 3x^2 - 4x + 5 - 2x^2 - 2

  Combine like terms

f(x) – g(x) = x^2 - 4x + 3

 

5 0
3 years ago
Solve 2x^2+3x=20 by completing the square
ss7ja [257]

Answer:

-21x

I think I did the math and this is what I got.

4 0
3 years ago
Read 2 more answers
PLEASE ANSWER I NEED HELP PLEASE PLEASEEEE
qwelly [4]

Answer:

3>-3

Step-by-step explanation:

make an open dot on 3 and make a line going towards the left.

3 0
3 years ago
Please help fast! I will give 15 points!
harina [27]

Answer:

srry I can't answer this question it's kinda of hard to solve srry

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