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4 years ago

Help!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

azamat4 years ago

4 0

Answer:

1. D 2. B 3. C

Step-by-step explanation:

WARNING: I am not 100% sure about 2.

1. If you simplify the first part of the equation for letter D, you'll realise it is the same equation.

2. It is either B or D. I believe it is B because you would not have to multiply 4 again.

3. The square root of 121 is eleven, the square root of x^2 is x. x=11.

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How would i solve this? i have to find extraneous solutions along with it

gtnhenbr [62]

Answer:

Step-by-step explanation:

Note that (m+2)(m+3) = m²+5m+6, so the least common denominator is

m²+5m+6.

7 0

3 years ago

Betty saves 3 times as much as Ann. Charles save 390 less than Ann.. If Betty saves save 1330 more than Charles. how much does C

Igoryamba

Answer:

Step-by-step explanation:

We let x be Ann's savings.

Betty saves 3 times as much as Ann.

This implies that Betty's savings in terms of x

$= 3x$

Charles save 390 less than Ann.

This implies Charles savings

$= x - 390$

Betty saves 1330 more than Charles.

This implies that when we deduct Charles savings from Betty's we have to get 1330.

Mathematical equation for the problem:

$3x - (x - 390) = 1330$

Expand :

$\implies 3x - x + 390= 1330$

$\implies 2x + 390= 1330$

Subtract 390 from both sides.

$\implies 2x + 390 - 390= 1330 - 390$

$\implies 2x=940$

Divide through by 2

$\implies \frac{2x}{2} = \frac{940}{2}$

$\implies x=470$

Hence Charles saving is

$x - 390 = 470 - 390 = 80$

7 0

4 years ago

Factor by using the GCF.

Lady_Fox [76]

Both terms have a 2x^4 in common. When this GCF is factored out you get 2x^4(x^2 - 6).

Answer is C

5 0

3 years ago

Plz help me plzzzzzzz

ycow [4]

Answer:

162.5

Step-by-step explanation:

8 0

3 years ago

George has $15. He would like to know if he has enough money to see a movie ($9.00) and buy a pretzel ($2.65), a drink ($1.35),

notsponge [240]

Answer:

Yes, he has enough money and your simplified answer is below. If I'm wrong correct me or give me a comment.

Step-by-step explanation:

15 - 9 + 2.65 + 1.35 + 2(1.74) Multiply first.

15 - 9 + 2.65 + 1.35 + 3.48 Then just add or subtract from the left to the right

6 + 2.65 + 1.35 + 3.48

8.65 + 1.35 + 3.48

10 + 3.48

13.48 would be the simplified answer.

8 0

3 years ago