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mamaluj [8]
3 years ago
9

Please help :// I need to finish this

Mathematics
1 answer:
Charra [1.4K]3 years ago
8 0
The answers to the questions

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The sale price of an item is $180 after a 25% discount is applied. What is the original price of the item?
Valentin [98]
So
100%=original
25% discount
100-25=75
it is 180 sale
75%=180
find 100%

a hack is to recognize that 75/3 times 4=100 so
75%=180
divide 3
25%=60
times 4
100%=240


the real way is proportions
75:180 =100:x
75/180=100/x
multiply both sides by 180x
75x=18000
divide 75
x=240



origitnal price=$240
3 0
4 years ago
Read 2 more answers
A Triangle has an area of 36cm^2. The base and height are scaled by a factor of 5. What is the area of the resulting triangle?
Finger [1]

Answer:

Area of resulting triangle  will be 900 cm^2.

Step-by-step explanation:

When sides of  any polygon if scaled by a factor of k

then area is scaled by k^2

According to the above statement

therefore  here in the question since area of original triangle was 36cm^2

and both  base and height are scaled by a factor of 5.

therefore area of scaled triangle will be 5^2 times of the original

that is 25 x 36 which gives 900 cm^2

So area of resulting triangle will be 900 cm^2


7 0
3 years ago
40 pounds of dog food cost $50 how much would 35 pounds of dog food cost
astraxan [27]
50:40=x:35
5/4=x/35
times both sides by (4*35)
5*35=4x
175=4x
divide both sides by 4
43.75=x

costs $43.75
3 0
3 years ago
Write the equation for g(x)
Natasha_Volkova [10]

Answer:

Step-by-step explanation:

g(x) = (x+4)² - 5

8 0
3 years ago
-22<br> 52<br> -33<br> 71<br> -44<br> What is the x-intercept of the line?
swat32

Answer:

30

Step-by-step explanation:

5 0
3 years ago
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