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vesna_86 [32]
3 years ago
9

Help me please!!! Show work completely. I just need help with 9

Mathematics
1 answer:
Vlada [557]3 years ago
6 0

Answer: x = -5, x = 6

<u>Step-by-step explanation:</u>

"Solutions" are also called roots, zeroes, and x-intercepts and are where the parabola crosses the x-axis.

The parabola crosses the x-axis at x = -5 and at x = 6

(see attachment)

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Please help, I’m struggling
Naddika [18.5K]

Answer:

49.5 mi

Step-by-step explanation:

Area of a triangle is   A = (height) X (base) / 2

So if you plug in the numbers you get:

806.9 = (32.6) X (base) / 2

1613.8 = (32.6) X (base)

1613.8 / 32.6 = base

base =  49.5 mi

8 0
3 years ago
A company manufactures a large number of rods. The lengths of the rods are normally distributed with a mean length of 4.4 inches
Elza [17]

Answer:

0.78814

Step-by-step explanation:

We solve using z score

z = (x-μ)/σ, where

x is the raw score = 4.0 inches

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σ is the population standard deviation = 0.5 inches

z = 4.0 - 4.4/0.5

z = -0.8

Probability value from Z-Table:

P(x<4.0) = 0.21186

P(x>4.0) = 1 - P(x<4.0)

= 1 - 2.1186

= 0.78814

The probability that the rod you chose will be greater than 4.0 inches is 0.78814.

4 0
3 years ago
Solve 3(2x+1) over 5 =2x-5
xenn [34]
Cross multiply
3(2x + 1) = 5(2x - 5)
expand by using distributive property
6x + 3 = 10x - 25
-4x = - 28
   x = 7
8 0
3 years ago
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and surely you know how much that is.
4 0
4 years ago
What is 6,780 divided by 10
german

Answer:

the answer is 678

Step-by-step explanation: a little trick you can do is if there is a zero at the end of a number and your dividing just remove the 0. Or just do 6780/10

7 0
4 years ago
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