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Anna [14]
3 years ago
12

A 19.7% b 24.6% c 80.3% d 15%

Mathematics
1 answer:
Travka [436]3 years ago
4 0

Answer:

. How to calculate percentage of a number. Use the percentage formula: P% * X = Y

Convert the problem to an equation using the percentage formula: P% * X = Y.

P is 10%, X is 150, so the equation is 10% * 150 = Y.

Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10.

Step-by-step explanation:

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Help on this please show my work ?
Mandarinka [93]
Factor the denominator
x^2+3x-10
(x+5)(x-2)

(x-2)/((x+5)(x-2))

The x-2 in the numerator and denominator cancel out.

Final answer: x+5
5 0
4 years ago
The price of a house DECREASED from $82500 to $77500. Calculate the PERCENTAGE DECREASE
Igoryamba

Answer:

6.06%

Step-by-step explanation:

percentage \: decrease \\  \\  =  \frac{82500 - 77500}{82500}  \times 100 \\  \\  =  \frac{5000 \times 100}{82500}  \\  \\  =  \frac{500000}{82500}  \\  \\  = 6.06060606 \\  \\  = 6.06 \%

7 0
3 years ago
The price of tiling a room varies directly as the size of the room. Sam is laying tile in his kitchen. If the tiling costs $4,22
mixas84 [53]

Answer:

239 ft².

Step-by-step explanation:

Let P represent the price for tiling.

Let S represent the size of the room.

From the question,

Price (P) varies directly as the size (S) i.e

P & S

P = KS

Where K is the constant of proportionality.

Next, we shall determine the value of K as follow

Price (P) = $ 4224

Size (S) = 264 ft²

Constant of proportionality (K) =?

P = KS

4224 = K × 264

Divide both side by 264

K = 4224/264

K = 16

Finally, we shall determine the size of the kitchen that will cost $ 3824 for tiling.

This is illustrated below:

Price (P) = $ 3824

Constant of proportionality (K) = 16

Size (S) =?

P = KS

3824 = 16 × S

Divide both side by 16

S = 3824/16

S = 239 ft²

Therefore, the size of the kitchen is 239 ft².

6 0
3 years ago
What is the area of a a trapezoid with the following dimensions h=5cm b1=9 cm b2= 15cm ?
e-lub [12.9K]

Answer:

60cm^2

Step-by-step explanation:

The formula for the area of a trapezium is : \frac{a+b}{2}*height

To work out the area of the trapezium you would first have to add the lengths at the top and bottom (a and b) which is 9+15, this gives you 24cm.

The next step is to divide the value of 24 by 2, this gives you 12cm.

The final step is to multiply the value of 12cm by the height of 5, this gives you  60cm^2. This is because if you were to substitute the values into the formula you would get the same answer.

1) Add 9 and 15.

15+9=24

2) Divide 24 by 2.

24/2=12

3) Multiply 12 and 5.

12*5=60cm^2

7 0
3 years ago
PLEASE HELP AND EXPLAIN
nadezda [96]

I have never see this in my. Life

5 0
3 years ago
Read 2 more answers
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