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babunello [35]
3 years ago
7

Can you help me iwill give you a branlist

Mathematics
1 answer:
Anastasy [175]3 years ago
5 0

Answer:

The last one

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The B-Clean Car Wash washed 128 cars in the 3 hours. At that rate how many cars can they wash in 8 hours? use a proportion.
krok68 [10]

128 : 3 :: w : 8 proportion

3w = (8)(128) product means/extremes

w = 341 ⅓ cars

7 0
3 years ago
Find the solutions to the system; y=x^2-3x-1 and y=8x-1
PSYCHO15rus [73]

{x}^{2}  - 3x - 1 = 8x - 1 \\  {x}^{2} - 11x = 0 \\ x(x - 11) \\ x = 0 \: or \: x = 11

When x = 0,
y = 8x - 1 \\ y = 0 - 1 \\ y =  - 1

When x = 11
y  = 8(11) - 1 \\ y = 87
x = 0, y = - 1
x = 11, y = 87

Answer is B.

Hope this helps. - M
8 0
2 years ago
2/5da80% como ahora la cuenta
andreev551 [17]
I don't speak Spanish but I think that this is what you meant:
80 * 2/5 = 32
so 2/5 of 80 % is 32 % (80/5 * 2)
4 0
3 years ago
Please help me its a math problem !! please see image
erma4kov [3.2K]

Answer:

<u>y ≤ 4</u>

Step-by-step explanation:

Solving :

  • Highest y-value is 4
  • The other y-values are less than 4
  • Hence, the range is : <u>y ≤ 4</u>
5 0
1 year ago
Evaluate 12x2 + 39x + 30 at x = 3.
ycow [4]

Answer:

255

Step-by-step explanation:

12x^(2) + 39x + 30

x = 3

Substitute in"3" for "x" and solve;

12(3)^(2) + 39(3) + 30

= 12 * 9 + 117 + 30

= 108 + 117 + 30

= 255

3 0
3 years ago
Read 2 more answers
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