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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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Write the following ratios in its simplest form 56:112:28
damaskus [11]

Answer:

<u>2 : 4 : 1</u>

Step-by-step explanation:

First take common factors by factorization.

56 = 14 x 4 = 28 x 2

112 = 14 x 8 = 28 x 4

28 = 14 x 2 = 28 x 1

Remove the 28 common factor.

Therefore,

56 : 112 : 28

= <u>2 : 4 : 1</u>

5 0
3 years ago
An ant walked on the coordinate plane from point A( − 3,1) to point B(1,25) by the shortest path. Find y-coordinate of the point
konstantin123 [22]

Answer:

19

Step-by-step explanation:

The shortest path is a straight line.  The slope of that line is:

m = (25 − 1) / (1 − (-3))

m = 6

The point where the ant intersects the y-axis has an x-coordinate of 0.  The slope between that point, and any other point on the line, is 6.

6 = (y − 1) / (0 − (-3))

y = 19

6 0
4 years ago
If f(x) = 1/x + 2/x ,<br> then f<br> (1/3) =
BlackZzzverrR [31]

Answer:

f(1/3) = 9

Step-by-step explanation:

f(x) = 1/x + 2/x

f(1/3) = 1/(1/3) + 2/(1/3)

f(1/3) = 1(3) + 2(3)

f(1/3) = 3 + 6

f(1/3) = 9

8 0
4 years ago
Pls no links, I really need help
mylen [45]

Answer:

The answer should be b. (0,2) because that the order pair for y

4 0
3 years ago
Read 2 more answers
The question is attached<br> perimeter
ycow [4]

Answer:

62 cm

Step-by-step explanation:

48/4 = 12 so 1 side = 12

the base of the triangle therefore must also be 12 so 38 - 12 = 26

26 + 36 = 62

(2 sides of triangle + 3 sides of square)

4 0
3 years ago
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