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RUDIKE [14]
3 years ago
11

Simplify (4−b)(5b2+5b−4)

Mathematics
1 answer:
astraxan [27]3 years ago
4 0

Answer:15b^2-5b^3+24b-16

Step-by-step explanation:

(4-b)(5b^2+5b-4)

Open the brackets

20b^2+20b-16-5b^3-5b^2+4b

Collect like terms

20b^2-5b^2-5b^3+20b+4b-16

15b^2-5b^3+24b-16

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Can someone help me with this? thank you!
babunello [35]

Answer:

h(9)=62

Step-by-step explanation:

h(x)=8x-10

62=8x-10 <em>(</em><em>+</em><em>1</em><em>0</em><em>)</em>

72=8x <em>(</em><em>÷</em><em>8</em><em>)</em>

9=x

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3 years ago
Question 38, what exactly do I do and how do I format it
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Check the picture below.

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3 years ago
A cube has a surface area of 96 square centimeters. How long is each face of the cube?
netineya [11]

Answer:

I believe the answer would be 4

Step-by-step explanation:

I'm going to use (a) to represent the side length in my explanation. side length is equivalent to the square root of the surface area over 6. The 6 is coming from there being 6 faces on a cube. So to solve this equation, you would first write it out.  a=96/6. Next you would divide 96/6, giving you 16. and then lastly, you would find the square root of 16, which is 4. giving you a final answer of 4.

Hope this helps, and you understand it more!

6 0
3 years ago
Lu has 13 apples. He tries to put them into 2 equal piles. One pile is bigger. How many apples does the big pile have?
aniked [119]

Answer:

7 apples

Step-by-step explanation:

You can divide the apples by 2, but you will have a decimal. The closest you can get it without having a decimal is 7 in one pile, and 6 in the other. The pile with 7 apples is bigger.

5 0
3 years ago
Read 2 more answers
Find the percentage of: 21% of 18 use a set of fraction operations method to find the percentage.
Pani-rosa [81]

Answer:

4.8%

Step-by-step explanation:

21% of 18

following the BODMAS rule, OF means multiplication

and also this sign% always means 100

so,it will be  21/100 * 18/1

this a laptop so i cant put it in a fraction way.....okay

this is how it shows...21/100 * 18/1

lets divide....

21/100 * 18/1

we will use 2 to divide

2 in 100=50

2 in 18=9

so it will be 21/50 * 9/1

nothing can divide so we will multiply

21*9/50*1

189/50=3.78≈4.8%

4 0
3 years ago
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