MATHEMATICS HIGH SCHOOL

Which expression could be used to determine the cost of a $50 video game after a 20 percent discount?$50(0.20)
$50(1 – $50)(0.20)
$50 – 0.80
$50(0.80)

Answers

Answer 1
Answer: The expression that could be used to determine the cost of a $50 video game after a 20 percent discount is:

$50(0.80)

$50(0.80) = $40 discounted amount

$50 * 20% = 10 discount value
$50 - 10 = $40 discounted amount
Answer 2
Answer: If you would like to know the expression that could be used to determine the cost of a $50 video game after a 20 percent discount, you can do this using the following steps:

$50 - 20% of $50 = $50 - 20% * $50 = $50 - 20/100 * $50 = $50 - 1/5 * $50 = $50 - 0.20 * $50 = $50 * 0.80 = $40

The correct result would be $50(0.80).

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a + b  +c = 10

a + b - c = 3

 find the value of

a + b + 3c


Answers

ok if you look at the first to equations carefully you will see that 2 things have changed between the 2. the "+c" is now "-c" and the "10" is now "3"

if we think about it you will see that c=7. well how do we know. when c or 7 was taken away from the problem it left you with 3 

so that means a+b=3

we dont need to know what the exat value of a or b is.

so a+b +3c
      (3) + 3(7)
       3   +  21
         24

a+b+3c=24

If y varies inversely as the cube root of x, and y = 12 when x = 8, find y when x = 1.
y = ?

Answers

If y varies inversely as the cube root of x:
y = k / ∛x
12 = k / ∛8
12 = k / 2
k = 12 · 2
k = 24
When x = 1
y = 24 / ∛1 = 24 / 1 = 24
Answer:  y = 24 

YFind the slope of the line that passes through the points
(2,-5) and (7.1).
x
2
7
y
-5
1
on
4
Step 1: Choose (X1.71).
2
-4
-2
2
4
ON
8
-2
-4
-6
Check

Answers

Answer:

step 1:

2,-5

step 2:

7,1

step 3:

6/5

Step-by-step explanation:

bro i had 10,000 points on brainly, and some weird a.i. deleted all my answers to all the questions i answered so now i only have 732 points?!

Answers