2 years ago

I will get 10% off if and only if i spend at least $75

Mathematics

1 answer:

Roman55 [17]2 years ago

3 0

Answer:

You'd spend $67.5

Step-by-step explanation:

You might be interested in

The product of a number and ten is twelve more than the product of the number and five-eighths.

ra1l [238]

Let the unknown number be x.

Given,

$10 * x = 12 + \frac{5}{8} * x$

$10x = 12 + \frac{5x}{8}$

$10x - \frac{5x}{8} = 12$

$\frac{(10x*8)-5x}{8} = 12$

$80x-5x =12*8$

$75x = 96$

x = $\frac{96}{75}$ = 1.28

Hence, the number is 1.28

3 0

3 years ago

Solve for x:<br><br> x2 + 8x = -1

olga nikolaevna [1]

$x^2+8x=-1\\
x^2+8x+16-16=-1\\
(x+4)^2=15\\
x+4=\sqrt{15} \vee x+4=-\sqrt{15}\\
x=-4+\sqrt{15} \vee x=-4-\sqrt{15}$

7 0

2 years ago

The price of a DVD, including 5% sales tax is $21.15. What us the price of the DVD, before sales tax?

AfilCa [17]

Answer:

20.14

Step-by-step explanation:

21.15 - 5%(1.01) = 20.14

6 0

2 years ago

Identify the graph of the equation and find (h k). x^2-2x-y^2-2y-36=0

Butoxors [25]

Answer:

c. hyperbola, (1,-1)

Step-by-step explanation:

6 0

2 years ago

Please help me I’m confused

Vesnalui [34]

I think it’s b I hope I’m sosososososos sorry if it ain’t

8 0

3 years ago