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3 years ago

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Which of the following is an equivalent to the expression shown? Hint: factor! 7x−56−28x Group of answer choices 7(x-4-4x) -7(x-

8-4x) 7(x-8-4x) −7(3x−8)

1 answer:

Anestetic [448]3 years ago

3 0

Answer:i think its the second one

Step-by-step explanation:

took the test

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Molodets [167]

Answer:

I dont know

Step-by-step explanation:

4 0

2 years ago

Problem 3.2.14a<br><br> Show that 2^2x+1 +1 is divisible by 3.

elena-s [515]

Answer:

The given expression is divisible by 3 for all natural values of x.

Step-by-step explanation:

The given expression is

$2^{2x+1}+1$

For x=1,

$2^{2(1)+1}+1=2^{3}+18+1=9$

9 is divisible by 3. So, the given statement is true for x=1.

Assumed that the given statement is true for n=k.

$2^{2k+1}+1$

This expression is divisible by 3. So,

$2^{2k+1}+1=3n$ .... (1)

For x=k+1

$2^{2(k+1)+1}+1$

$2^{2k+2+1}+1$

$2^{(2k+1)+2}+1$

$2^{2k+1}2^2+1$

Using equation (1), we get

$(3n-1)2^2+1$

$(3n)2^2-2^2+1$

$(3n)2^2-4+1$

$(3n)4-3$

$3(4n-1)$

This expression is also divisible by 3.

Therefore the given expression is divisible by 3 for all natural values of x.

4 0

3 years ago

Jamal works at the recreation center 15 hours a week during the school year he earns $ 8.75 an hour in a typical month he works

g100num [7]

Since his wage is 8.75*63=551.25, we can add up the percentages to get 10+6.2+1.45+4+0.1=21.75%. To get 21.75%, we can move the decimal 2 to the left to get 0.2175. Multiply that by 551.25 to get around 119.9 dollars. If you'd like to calculate the individual taxes, you can apply a similar process to figure that out

3 0

3 years ago

Need help please it’s due today show work

kari74 [83]

Answer:

D. -(-2/9)

Step-by-step explanation:

Once you distribute the negative sign, it makes the same answer.

-2 times -1 = 2

9 times -1 = -9

2/-9

8 0

2 years ago

Can someone help me please solving this maths problems.

masya89 [10]

1. Six. x x x x x x
x x x x x x

2. Two o o o o o
o o o o o

3. Four. # # # #
# # # #
# # # #
# # # #

4. Eight. @ @ @
@ @ @
@ @ @
@ @ @
@ @ @
@ @ @
@ @ @
@ @ @

5. Three. + + + + +
+ + + + +
+ + + + +

6 0

2 years ago