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Elenna [48]
3 years ago
5

( 5x 2nd power + 2 ) - ( -4x 2nd power + 7 ) + ( - 3x 2nd power - 5 ) =

Mathematics
1 answer:
insens350 [35]3 years ago
3 0

Answer:

C

Step-by-step explanation:

5x 2nd power -(-4x 2nd power) makes it a positive which is 9x 2nd power then 9x 2nd power +(-3x 2nd power) which + and - make it 9x 2nd power-3x 2nd power which equals 6x 2nd power. The only answer choice with 6x 2nd power is C.

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A building's construction cost was $625,000. the building is 80 feet long, 45 feet wide and 12 feet high. what was the cost of t
Alborosie
Volume = Length x Width x Height 
Volume = 80 x 45 x 12
Volume = 43200 ft³

Cost per cubic foot = $625 000 ÷ 43200
Cost per cubic foot = $14.47

----------------------------------------------
Answer: $14.47 per cubic foot.
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8 0
3 years ago
PLEASE HELP!!! In HTML, write a short paragraph describing something from a book or movie (two or three sentences). Be sure to m
My name is Ann [436]

Answer:

In the movie The Lion King, Simba was born into the pride lands. He was born to be the future King. His father Mufasa showed him the ways of becoming a rightful King as well as how to not be selfish with his power.

Step-by-step explanation:

I hope this helps, it's not the best.

8 0
3 years ago
How many places do you need to move the decimal to the left to write the number below in scientific notation?
bonufazy [111]

Answer:

A) 1.3*10¹

B)7*10⁰ - Actually I am not very sure if it is required to write 10⁰. I normally don't write 10⁰ (When I solve problems in physics if the answer for example is 7 I just write 7 not 7*10⁰). But if you check on Google 10⁰ has been mentioned

C)1.4*10¹

D)1.2*10¹

Step-by-step explanation:

For any number when you express it in a scientific notation, You should make sure that the number (for example : X) X which is going to be multiplied with a power of 10 (for example:10³,10⁴10¹⁰ etc), X should be between 1 and 10

This might sound very complicated so I can give you an example to simplify

Let's take 1.3*10¹

In this case X is 1.3

This means X*10¹

The number X is being multiplied with the power of 10(example:10¹,10²,10⁰,10⁹ ,etc) .In the above case X is being multiplied with 10¹.

Now this number X should be between 1 and 10.(Including 1)

Scientific notation= X*power of 10

where x>=1 & x<10

That is the explanation

Hope it helps

If you think my explanation is a bit complicated

you can ask me again

5 0
3 years ago
What is the value of x?
daser333 [38]

Answer:

x=22.5

Step-by-step explanation:

BM||DT

Using Intercept theorem/Intercept theorem

\frac{6}{6+15} =\frac{9}{9+x}

6(9+x)=9*21

54+6x=189

6x=135

x=22.5

At least I think so

4 0
4 years ago
How can exponents express such numbers as 16
KonstantinChe [14]
You can do 4 to the second power and get 16
7 0
3 years ago
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