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3 years ago

What is 60%off on a price od 137.50

Mathematics

2 answers:

saveliy_v [14]3 years ago

8 0

Original price: $ 137.50

Discount percentage: 60 %

Results

Discount: $ 82.5

Final Price: $ 55

Hunter-Best [27]3 years ago

6 0

Inputs

Original price: $137.50

Discount percentage: 60%

Results

Discount: $82.5

Final Price: $55

Details

Discount = Original Price x Discount %/100

Discount = 137.5 × 60/100

Discount = 8250/100

Discount = $82.5

Final Price = Original Price - Discount

Final Price = 137.5 - 82.5

Final Price = $55

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Complete the equation of the line through (-9,7) & (-6,-3)

scZoUnD [109]

Answer:

$y=-\frac{10}{3}x-23$

Step-by-step explanation:

we have the points

(-9,7) and (-6,-3)

step 1

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values

$m=\frac{-3-7}{-6+9}$

$m=-\frac{10}{3}$

step 2

Find the equation in point slope form

$y-y1=m(x-x1)$

we have

$m=-\frac{10}{3}$

$(x1,y1)=(-6,-3)$

substitute

$y+3=-\frac{10}{3}(x+6)$ ---> equation in point slope form

step 3

Find the equation of the line in slope intercept form

$y=mx+b$

we have

$y+3=-\frac{10}{3}(x+6)$

Isolate the variable y

Distribute right side

$y+3=-\frac{10}{3}x-20$

subtract 3 both sides

$y=-\frac{10}{3}x-20-3$

$y=-\frac{10}{3}x-23$

7 0

3 years ago

What is the value of the expression f(-3) + 2f(-1) - f (4)<br><br> PLEASE HELP NO LINKS

Bas_tet [7]

Answer:

Step-by-step explanation:

Find f(-3) :

f(x) = x² + 2x for x ≤ -3

That means for those values of x, less than or equal to -3, this is the function.

So, f(-3) = (-3)² + 2(-3) = 9 - 6 = 3

Now, f(-1) :

From the given data, we see it is: f(x) = 2 $(\frac{1}{3} )^{2x}$

We take this because -1 lies between -3 and 4.

Now, f(-1) = 2 $(\frac{1}{3} )^{2(-1)}$

=> $f = (-1) = 2(3)^{2} = 2 (9) = 18$

For f(4) :

Clearly, the function is: $f (x) = \frac{2x - 5}{x-7}$

$f (4) = \frac{2(4)-5}{4-7} = \frac{3}{-3} = -1$

Therefore, <u>f(-3) + f(-1) - f(4) = 3 + 18 - (-1) = 3 + 18 + 1 = 22.</u>

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3 years ago

Phoebe compared the cost of books in 9 different stores.

krek1111 [17]

You have to put the numbers in order and find the middle value so in this case it's-

2, 4, 4, 5, 6, 7, 8, 8, 8

The answer is $6

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3 years ago

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Pavlova-9 [17]

Answer:

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Step-by-step explanation:

We can use a ratio to solve

6 rolls 1 roll

------------ = -------------

3 people x people

Using cross products

6x =3

Divide each side by 6

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1 roll will solve 1/2 person

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3 years ago

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irakobra [83]

Answer:

true

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers