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3 years ago

Write the percentage below as a decimal. 15%

Mathematics

1 answer:

Nadya [2.5K]3 years ago

6 0

Answer: 0.15.

Step-by-step explanation:This is the same as moving the decimal point two places to the left. For example, 15% is equivalent to the decimal 0.15. Notice that dividing by 100 moves the decimal point two places to the left.

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What is the vertex? y=2x^2+28x-8

ra1l [238]

Fist convert the equation to vertex form

y = 2(x^2 + 14x) - 8
y = 2 [(x + 7)^2 - 49] - 8
y = 2(x + 7)^2 - 106

So the vertex is at (-7,-106)

5 0

2 years ago

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What is the approximate area of the circle that fits perfectly inside of the square? Use Pi = 3.14 and round to the nearest tent

Pani-rosa [81]

Answer:

$19.625\text{ cm}^2$

Step-by-step explanation:

GIVEN: A square with base $5\text{ cm}$ , a circle that perfectly fits inside square.

TO FIND: Approximate area of circle.

SOLUTION:

Consider the figure attached.

let the radius of circle be $x\text{ cm}$

radius of circle $=\frac{\text{length of base of square}}{2}$

$x=\frac{5}{2}\text{ cm}$

$x=2.5\text{ cm}$

Area of circle $=\pi(radius)^2$

$=3.14\times(2.5)^2$

$=19.625\text{ cm}^2$

Hence the area of circle that perfectly fits inside the square is $19.625\text{ cm}^2$

6 0

3 years ago

Read 2 more answers

By reaching into a bag that has letters A, B, and C, George will select three letters without replacing them. In how many possib

Marysya12 [62]

ABC,ACB,BAC,BCA,CAB,CBA

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3 years ago

1. Solve for the value of x

Tamiku [17]

Answer:

Explanation:

Line E B C Needs To Equal 180°

Create An Equation

3x + 5 + 3x + 4 + 3x + 9 = 180

Simplify Both Sides Of The Equation

(3x + 3x + 3x) + (5 + 4 + 9) = 180( Combine Like Terms)

9x + 18 = 180

Subtract 18 From Both Sides

9x + 18 − 18 = 180 − 18

9x = 162

Divide Both Sides By 9

9x / 9 = 162 / 9

7 0

3 years ago

In Lucy's coin collection, 15% of the coins are quarters.

stepan [7]

The total number of coins in Lucy's coin collection is equal to 80 coins.

Let the total number of coins be C.

<u>Given the following data:</u>

Percentage of quarters = 15%

Total number of quarters = 12 quarters

To the total number of coins in Lucy's coin collection:

Since the percentage of the quarters in Lucy's coin collection is equal to fifteen percent (15%) of the total number of coins. Thus, we would multiply the total number of coins by 15% and equate it to 12 quarters.

<u>Total number</u><u> of </u><u>coins</u><u>:</u>

$\frac{15}{100} \times C = 12\\\\15C=12 \times 100\\\\15C =1200\\\\C=\frac{1200}{15}$

C = 80 coins.

Read more on word problem here: brainly.com/question/24604067

5 0

2 years ago