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Orlov [11]
3 years ago
8

15. Your classmate was asked to square (2x - 3), he answered 4x2 - 9. Is his answer

Mathematics
2 answers:
Bezzdna [24]3 years ago
7 0

Answer:

4x2+9-12x

Step-by-step explanation:

it may help you to understand

LuckyWell [14K]3 years ago
6 0

Answer:

False The square of (2x - 3) is 2x - 3

Step-by-step explanation:

Remove parentheses from the origonal problem and you will get the squared solution.

2x - 3

I hope this helps

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Box A has a volume of 12 cubic meters. Box B is similar to box A. To create box B, box A's dimensions were multiplied by five. W
cestrela7 [59]

The formula for the volume of a box (assuming that it is in the shape of a cube) is <u>V=B^3</u>.

12=B^3

Now, do the cube root of 12 to find each dimension, all dimensions will be equal as it is a cube.

B= about 2.29 (when doing on a calculator keep full answer and do not round)

Now to find the volume of box B, multiply each dimension by 5

5(2.29...) times 5(2.29...) times 5(2.29...)

=1,500 m^3

Hope this helps!

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3 years ago
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Firdavs [7]

Answer:

i dont know i swear

Step-by-step explanation:

7 0
2 years ago
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Inga [223]
First and last blank im guessing is intersect or overlap the 2 in the middle should be...
8 0
2 years ago
Sin2x-sin2xcos2x=sin4x
yaroslaw [1]

It looks like the given equation is

sin(2x) - sin(2x) cos(2x) = sin(4x)

Recall the double angle identity for sine:

sin(2x) = 2 sin(x) cos(x)

which lets us rewrite the equation as

sin(2x) - sin(2x) cos(2x) = 2 sin(2x) cos(2x)

Move everything over to one side and factorize:

sin(2x) - sin(2x) cos(2x) - 2 sin(2x) cos(2x) = 0

sin(2x) - 3 sin(2x) cos(2x) = 0

sin(2x) (1 - 3 cos(2x)) = 0

Then we have two families of solutions,

sin(2x) = 0   or   1 - 3 cos(2x) = 0

sin(2x) = 0   or   cos(2x) = 1/3

[2x = arcsin(0) + 2nπ   or   2x = π - arcsin(0) + 2nπ]

… … …   or   [2x = arccos(1/3) + 2nπ   or   2x = -arccos(1/3) + 2nπ]

(where n is any integer)

[2x = 2nπ   or   2x = π + 2nπ]

… … …   or   [2x = arccos(1/3) + 2nπ   or   2x = -arccos(1/3) + 2nπ]

[x = nπ   or   x = π/2 + nπ]

… … …   or   [x = 1/2 arccos(1/3) + nπ   or   x = -1/2 arccos(1/3) + nπ]

7 0
2 years ago
Calculate the mean for the three sets of data A=[1,2,3,4,5] B=[2,2,2,2,2] C=[5,7,3,11,14]
Verizon [17]

A = The mean would be 3

B = The mean would be 2

C = The mean would be 8

To calculate mean, you add up all the numbers in a set and then divide by the quantity of numbers in the set.

6 0
3 years ago
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