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aleksandr82 [10.1K]
2 years ago
12

A shirt was reduced in price by 20% during a sale. If the shirt was bought

Mathematics
2 answers:
yaroslaw [1]2 years ago
7 0
£57.6 bc it is extremely cool and correct
Lesechka [4]2 years ago
3 0

Answer:

£60

Step-by-step explanation:

Let the original price of the shirt be £x.

Reduction in price = 20% of x = 0.2x

Selling price of the shirt = x - 0.2x = 0.8 x

Since, the shirt was sold for £48

Therefore, 0.8x = 48

x = 48/0.8

x = £60

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1) Helen is 8 years older than Jane. Twenty years ago Helen was three times as old as Jane. How old is each now and what is the
Mice21 [21]

Answer:

Part 1) Helen's age is 32 years old and Jane's age is 24 years old

Part 2) 13 twenty-dollar bills

Step-by-step explanation:

Part 1) Helen is 8 years older than Jane. Twenty years ago Helen was three times as old as Jane. How old is each now and what is the equation?

Let

x----> Helen's age

y---> Jane's age

we know that

x=y+8 ----> equation A

(x-20)=3(y-20) -----> equation B

substitute equation A in equation B and solve for y

(y+8-20)=3(y-20)

y-12=3y-60

3y-y=60-12

2y=48

y=24 years

Find the value of x

x=y+8

x=24+8=32 years

Part 2)

Let

x-----> the number of five-dollar bills

y----> the number of twenty-dollar bills

we know that

5x+20y=305 -----> equation A

y=x+4 ------> x=y-4 ------> equation B

substitute equation B in equation A and solve for y

5(y-4)+20y=305

5y-20+20y=305

25y=325

y=13 twenty-dollar bills

Find the value of x

x=y-4

x=13-4=9  five-dollar bills

5 0
3 years ago
I need help with this as fast as possible, I have no idea what it could be-
sergejj [24]
Can’t see the pic .........................
3 0
3 years ago
How to solve -y-23=y-16
malfutka [58]
Add y to both sides then do the algebra
7 0
3 years ago
Read 2 more answers
Which pair of functions have the same domain? A. F(x)= sin x and g(x) = tan x B. F(x) = cos x and f(x) = csc x C. G(x) = tan x a
EastWind [94]

Answer:

The correct choice is D

Step-by-step explanation:

The trigonometric functions, \sin x and \cos x are defined for all real numbers.

\tan x=\frac{\sin x}{\cos (x)}, this function is not defined where \cos x=0.

\cot x=\frac{\cos x}{\sin (x)}, this function is not defined where \sin x=0.

\csc x=\frac{1}{\sin (x)}, this function is not defined where \sin x=0.

For option A

The domain of f(x)=\sin(x) is all real numbers.

The domain of g(x) =tanx is x\ne \frac{(2n+1)\pi}{2}

For option B

The domain of f(x)=\cos(x) is all real numbers.

The domain of f(x) =csc(x) is x\ne n\pi

For option C,

The domain of G(x) =tanx is x\ne \frac{(2n+1)\pi}{2}

The domain of f(x) =cot(x) is x\ne n\pi

For option D;

The domain of f(x) =cot(x) is x\ne n\pi

The domain of f(x) =csc(x) is x\ne n\pi

3 0
3 years ago
Read 2 more answers
A trader had 30,500 eggs . He sold 12,680 of them to John and 16,570 to Peter. How many eggs he had left
zlopas [31]

Answer:

C. 17,820

Step-by-step explanation:

30,500-12,680= 17,820

4 0
2 years ago
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