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kvv77 [185]
3 years ago
14

John has $20.00 to spend for his mother's birthday. A string of pearls and a pair of pearl earrings costs $25.00. They are on sa

le for 30% off. How much money will John have left?​
Mathematics
1 answer:
Phoenix [80]3 years ago
4 0

Answer:

2.50

Step-by-step explanation:

30% of 25 is 7.50 take that away from 25 gives you 17.50 take that away from 20 gives you 2.50

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Arlecino [84]
I've attached a plot of one such cross-section (orange) over the region in the x-y plane (blue), including the bounding curves (red). (I've set y=1.25 for this example.)

The length of each cross section (the side lying in the base) has length determined by the horizontal distance x between the y-axis x=0 and the curve y=\sqrt x. In terms of y, this distance is x=y^2. The height of each cross section is twice the value of y, so the area of each rectangular cross section should be 2y^3.

This means the volume would be given by the integral

\displaystyle\int_0^22y^3\,\mathrm dy
8 0
3 years ago
I really need help on this !!
Naddik [55]

Answer:

r = -1

Step-by-step explanation:

(y2-y1)/(x2-x1)=m

(r,7)=(x1,y1) and (3,4)=(x2-y2) and m=-3/5

so plug in...

(4-7)/(4-r)=-3/5

then solve for r which will get that r = -1

numerator: 4-7=-3

denominator: 4-r=5 -> 4-5=0+r -> -1=r

4 0
2 years ago
Which of the following is the sum of the polynomials 5x^2-4x+1 and -3x^2+x-3??
Katyanochek1 [597]

5x^2-4x+1 + -3x^2+x-3= 2x^2-3x-2

6 0
2 years ago
Answer the pic below
netineya [11]

Answer:

second answer - think im right

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Find the effective rate for a payday loan which charges $53.29 for a two week loan of $430.
Doss [256]

Sorry for the wait.....

Hope this helps and Happy Halloween!!!!

8 0
3 years ago
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