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Alika [10]
3 years ago
5

Can you help me with these 3 questions? I was unable to find an answer and I am worried I will fail... ;(

Mathematics
1 answer:
DedPeter [7]3 years ago
8 0
Never mind i can see them
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The selling price of an apartment dropped from 250,000 to 225,000. By What percent did the price drop?
ch4aika [34]

Answer:

10%

Step-by-step explanation:

The percentage decrease in price = \frac{decrease amount}{original amount} x 100%

Original amount = 250,000

New amount = 225,000

Decrease in amount = 250,000 - 225,000

                        = 25,000

So that;

Percentage decrease in price = \frac{25000}{250000} x 100%

                                           = 0.1 x 100%

Percentage decrease in price = 10%

The price of the apartment dropped by 10% of its original price.

5 0
3 years ago
How much does 18cm are in mm
77julia77 [94]
Answer:
18 cm = 180 mm
Explanation:
18 cm • 10 cm (in one mm) = 180 mm
6 0
3 years ago
Which transformation did NOT take place?
Tanya [424]

Answer:

C

Step-by-step explanation:

8 0
3 years ago
Please do elimination method 2x-9y=-36 <br> -14x+18y=-18
Varvara68 [4.7K]

Answer:

The solution to the system of equations will be:

x=9,\:y=6

Step-by-step explanation:

Given the system of equations

\begin{bmatrix}2x-9y=-36\\ -14x+18y=-18\end{bmatrix}

Multiply 2x-9y=-36 by 7

14x-63y=-252

so the system of equations becomes

\begin{bmatrix}14x-63y=-252\\ -14x+18y=-18\end{bmatrix}

Adding both equations

-14x+18y=-18

+

\underline{14x-63y=-252}

-45y=-270

solve -45y = -270 for y

-45y=-270

divide both sides by -45

\frac{-45y}{-45}=\frac{-270}{-45}

Simplify

y=6

For 14x-63y = -270 plug in y = 6

14x-63\cdot \:6=-252

14x-378=-252

Add 378 to both sides

14x-378+378=-252+378

Simplify

14x=126

Divide both sides by 14

\frac{14x}{14}=\frac{126}{14}

Simplify

x=9

Therefore, the solution to the system of equations will be:

x=9,\:y=6

7 0
3 years ago
Rewrite 90° in radians. Give your answer in terms of Pi
Free_Kalibri [48]
You answer: π/2 1.571
7 0
3 years ago
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