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Inessa05 [86]
3 years ago
13

1 The ages of three cats are a, a + 4 and 2a - 3. Their total age is 21. Determine a. ?

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
8 0

Answer:

a = 5

Step-by-step explanation:

a +a+4 + 2a-3 = 21

4a +1 =21

4a = 20

a = 5

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Solve for x 2x/3 +1 =3
Bess [88]

Answer:

x=3

Step-by-step explanation:

Hello,

The first thing you do is set up your equation, and we are solving for x so we are going to get x by itself on one side of the = sign.

       2x/3+1=3        First thing: subtract 1 from BOTH sides.

               -1  -1

----------------------

          2x/3=2       Multipliy by 3 on both sides

              *3 *3

-----------------------

            2x=6         Divide by 2 on both sides

             /2 /2

-----------------------

           x=3

I hope this helped you!!!

5 0
3 years ago
Anyone have an aswer to this?
KIM [24]
X/1 would equal -2- square root of 11 and x2 would equal -2 plus square root of 11
4 0
3 years ago
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3/8 1/7 and 1/2 in greatest to least
Alex73 [517]
1/2, 3/8, 1/7 hopefully I am right I’m not sure
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3 years ago
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A landing pad for a helicopter is in the shape of a circle with a radius of 7 meters. Which of the following is closest to the a
ANTONII [103]

Answer:

The approximate value of the area is 153.86\ m^{2}

Step-by-step explanation:

we know that

The area of the circle (landing pad) is equal to

A=\pi r^{2}

we have

r=7\ m

substitute

A=\pi (7)^{2}

A=49\pi\ m^{2} ----> exact value of the area

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assume \pi=3.14

A=49(3.14)=153.86\ m^{2} ------> approximate value of the area

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B?

Step-by-step explanation:

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