Answer:
44
Step-by-step explanation:
fx=6(8)-4
fx=48-4
fx=44
Answer:
{y,x} = {-7,-3}
Step-by-step explanation:
- 3x = 2
y - 2x = -1
-3x + y = 2 -2x + y = -1
y = 2x - 1
(2x-1) - 3x = 2
- x = 3 x = - 3
y = 2x-1
x = -3
y = 2(-3)-1 = -7
Answer:
34 in²
Step-by-step explanation:
20.7 / 3.14 = 6.592 = diameter
6.592 / 2 = 3.296 = radius
3.296²(3.14) = 34.1
≈ 34 in²
Answer: 5
Step-by-step explanation:
From the question, we are informed that "x varies inversely with v". This means that
x = k/v
where,
k is a constant
We have to find k when x=35 when v=3
x = k/v
35 = k/3
k = 35 × 3
k = 105
Therefore when v = 21, x will be:
x = k/v
x = 105/21
x = 5
Answer:
The soccer team must wash 49 cars in order to gain at least $300.
Step-by-step explanation:
The soccer team started out by paying $84.55. They charge $8 per car wash. So let's say how many cars they washed was x. They need to gain at least $300 dollars. If we put this in an equation it looks like this (we are solving for x):
8x - 84.55 >or= 300
To find x we have to do the following steps:
8x - 84.55 >= 300
+ 84.55 + 84.55
8x >= 384.55
/8 /8
x >= 48
Now we have to make sure that this is correct:
8 * 48 - 84.55 = ?
384 - 84.55 = 299.45
Since 299.45 is less than 300, x must be greater than 48, but since 299.45 is so close to 300, my educated guess would be that x=49.
8 * 49 - 84.55 = ?
392 - 84.55 = 307.45
Since 307.45 is greater than 300, x=49. So we can conclude that they must wash 49 cars to profit at least $300.
