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andrezito [222]
3 years ago
9

Can anyone help me with this math test heres another question on it!!

Mathematics
1 answer:
stira [4]3 years ago
8 0

Answer:

31 1/2, or answer D

Step-by-step explanation:

Because you have three countertops which all have an area of 10 1/2 meaning you multiply 10.5x3 getting 31.5

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3. Multiply the polynomials (a^2 + 3a – 4) and (2a^2 – a + 5). Simplify the answer. Show your work.
Elza [17]

Answer:

2a^4+5a^3-6a^2+19a-20

Step-by-step explanation:

(a^2+3a-4)(2a^2-a+5)

2a^4-a^3+5a^2+6a^3-3a^2+15a-8a^2+4a-20

2a^4-a^3+6a^3+5a^2-3a^2-8a^2+15a+4a-20

2a^4+5a^3+2a^2-8a^2+19a-20

2a^4+5a^3-6a^2+19a-20

8 0
3 years ago
Please help me! Don't answer if you do not know
emmainna [20.7K]

What is the question ?


4 0
3 years ago
Can someone explain how to do #3?
dsp73

\displaysyle (\sqrt 2)^{3}=(2^{\frac{1}{2}})^3=2^{\frac{1}{2} \cdot 3}=2^{\frac{3}{2}}=\sqrt {2^3}=\sqrt 8

√8 is between 2 and 3, because 2²=4<8, but 3²=9>8. Also, our value is closer to 3 than to 2, so it is more than 2.5 and we have C and D options left.

Among these two numbers we find the one which is closer to √8.

C. 27=√729 ⇒ 2.7=√7.29

D. 28=√784 ⇒ <u>2.8=√7.84</u>

Hence our answer is D) 2.8

5 0
3 years ago
Read 2 more answers
I WILL LITERALLY GIVE OUT 50 POINTS FOR THIS!!!!
kaheart [24]

Answer: B) -3

Step-by-step explanation:

X<-11/3 if u divide -11/3 = is about -3.6666

3 0
3 years ago
Read 2 more answers
Write two subtraction equations to show how to find 15 - 7
pantera1 [17]
15-7=8         
i hope it helps
5 0
4 years ago
Read 2 more answers
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