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kumpel [21]
2 years ago
7

Mike's age is six more than two times his sister's age. Mike is seventeen years old.Write the equation that could be used to det

ermine the age of Mike's sister.
Mathematics
1 answer:
photoshop1234 [79]2 years ago
8 0

Answer:

Mike's sisters age is 5 years old

Step-by-step explanation:

Since Mike is 17 years old, he is six years older than 2 times her age, so we subtract 6 from his age; we get 11 since he is 2 times her age divide 11 by 2 = 5.5. That means that his sister is 5 years old

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4x-5(x-2)=12x+4-x<br> ??????????????
Anestetic [448]
     4x - 5(x - 2) = 12x + 4 - x
4x - 5(x) - 5(-2) = 12 - x + 4
    4x - 5x + 10 = 11x + 4
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          <u>+ x             + x       </u>
                    10 = 12x + 4
                    <u>- 4            - 4</u>
                      <u>6</u> = <u>12x</u>
                     12    12
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6 0
3 years ago
Two numbers in a ratio 5:4 . Their sun is 720.find the bigger number.show your reasoning
alina1380 [7]
5x + 4x = 720
9x = 720 (divide by 9)
X= 80
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Work:
5(80)= 400
6 0
3 years ago
Help for geometry asap
Llana [10]

<u>Given</u>:

Four lines are marked proportion, the length of TW can be determined by

TW=a+4+b

<u>Value of a:</u>

Let us set the proportion for the given lines.

Thus, we have;

 \frac{a}{7}=\frac{4}{5}

5a=28

 a=5.6

Thus, the value of a is 5.6

<u>Value of b:</u>

Let us set the proportion for the given lines.

Thus, we have;

 \frac{4}{5}=\frac{b}{5}

20=5b

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Thus, the value of b is 5.

<u>Length of TW:</u>

The length of TW is given by

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TW=13.6

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3 0
3 years ago
Find the volume of the sphere with a radius, r, of 3/2 feet and π ≈ 3.14.
nalin [4]

Answer:

V= 14.13

Step-by-step explanation:

Information needed:

V= 4/3\pir^3

\pi= 3.14

r= 3/2

Solve:

V= 4/3\pir^3

V= 4/3(3.14)(3/2)^3

V= 4/3(3.14)(27/8)

V= 14.13

3 0
3 years ago
Read 2 more answers
Aubrey finished 2/9 of a project on Monday and 1/4 of the project of Tuesday. How much of the project has Aubrey completed?
riadik2000 [5.3K]

Answer:

17/36

Step-by-step explanation:

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5 0
3 years ago
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