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balu736 [363]
4 years ago
5

How do I complete this formal check?

Mathematics
1 answer:
natima [27]4 years ago
8 0

Answer:

Step-by-step explanation:

The first two steps are for the purpose of eliminating fractions.  Doing so results in 4(2x - 5) = 9(x - 2), which is to be solved for x.

Perform the indicated multiplication, obtaining:

8x - 20 = 9x - 18.

Then combine like terms:  -2 = x, or

x = -2.

To complete the formal check, substitute -2 for x in the first equation.  This results in:

(1/3)(-4 - 5) = (3/4)(-2 -2), or

        -3       =        -3

... which is obviously true.  

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Ms. Smith mixes orange juice with seltzer in a ratio of 3:1. If she uses 48 ounces of orange juice, how many ounces of seltzer d
vladimir2022 [97]

Answer:

16 oz

Step-by-step explanation:

the ratio is 3 oz of oj to 1 oz of seltzer.

I pretty much just divided 48 by 3.

I hope this is correct and I hope it helps you!

3 0
3 years ago
The radius of the base of a right circular cone is 7 times greater than the radius of another right circular cone. If the height
Simora [160]

Answer: option D is the correct answer.

Step-by-step explanation:

Let the height of both cones be h

The radius of the base of a right circular cone is 7 times greater than the radius of another right circular cone. If the radius of the smaller cone is r, then the radius of the larger cone is 7r.

The formula for determining the volume of a cone is expressed as

Volume = 1/3(πr²h)

Volume of the smaller cone is

1/3(πr²h)

Volume of the larger cone is

1/3(π ×(7r)²h)

= 1/3(π ×49r²h)

the volume of the larger cone divided by the volume of the smaller cone is

1/3(π ×49r²h) / 1/3(πr²h) = 49/1 = 49

4 0
4 years ago
If your lawnmower uses 1/3 of a gallon of gas to cut grass for one hour and you have 5/6 gallins of gas how long can you cut the
Eddi Din [679]

Answer:

Answer is 2 hours

Step-by-step explanation:

You have to change 1/3 to 2/6

5÷2=2.5

8 0
3 years ago
Please answer the question above
blagie [28]
Take 12500-11625, which is 875.

Divide 875 by the original price, 12500, to get 0.07.

Multiply 0.07 by 100.

Your answer should be a 7% reduction.
5 0
3 years ago
From the set {6, 7, 11}, use substitution to determine which value of x makes the equation true.
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4 years ago
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