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3 years ago

Define a variable and write an expression to represent the following phrase:

Mathematics

1 answer:

ryzh [129]3 years ago

6 0

Answer:

x - 7 = age of whatever you are finding the age of

Step-by-step explanation:

seven years younger implies that you are taking away so we minus it from our variable, Tates age is the variable since it does not tell us his/her age in the statement given.

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The height of a tree was 12 feet. after a year, the tree's height increased 25%. what is the height of the tree after a year

g100num [7]

15ft because 12x.25=3 so 3ft is 25% of the 12ft, add the 3+12=15

6 0

3 years ago

A bicycle tire is 28 inches in diameter.

Andrej [43]

Answer:

Option A.) 88 inches

Step-by-step explanation:

step 1

Find the circumference of the wheel

we know that

The circumference of a circle is equal to

$C=\pi D$

we have

$D=28\ in$

$\pi =\frac{22}{7}$

substitute

$C=(\frac{22}{7})(28)=88\ in$

8 0

3 years ago

The length of a rectangle is three more than twice the width. The perimeter is 96. What are the dimensions?

SIZIF [17.4K]

Answer:

Width =15

Length =33

Step-by-step explanation:

Take width as x

And length as 2x+3

Perimeter as 96

Formula of the perimeter of a rectangle is 2l+2w

X+×+2×+3+2×+3=96

6x+6=96

6x=96-6

6×=90

X=15

Width =x and x =15 so width =15 while length =33

7 0

3 years ago

There is a bag filled with 5 blue, 4 red and 3 green marbles.

valentinak56 [21]

Answer: 2/12 (1/6 simplified)

Step-by-step explanation:

5+4+3=12

2 marbles of the same color

2/12

2/2=1

12/2=6

4 0

3 years ago

Andrew pays a monthly membership fee of $10 at his gym. Each time he uses the gym, he pays $5. Last month, Andrew spent a total

Ivenika [448]

Answer:

Step-by-step explanation:

If we input 11 into the equation, we get: 10 + 5(11) = 65.

5 x 11 = 55

55 + 10 = 65

Therefore x = 11

6 0

2 years ago