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abruzzese [7]
3 years ago
8

BRAINLIEST TO THE BEST ANSWER !!!!

Mathematics
1 answer:
TiliK225 [7]3 years ago
4 0
Which equation am I looking at
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I need help with 4=2/3(2x-9
sweet [91]

Answer:

x=15/2

Hope it helps :)

4 0
3 years ago
Read 2 more answers
The manufacturing of a ball bearing is normally distributed with a mean diameter of 22 millimeters and a standard deviation of .
Misha Larkins [42]

Answer:

0.1507 or 15.07%.

Step-by-step explanation:

We have been given that the manufacturing of a ball bearing is normally distributed with a mean diameter of 22 millimeters and a standard deviation of .016 millimeters. To be acceptable the diameter needs to be between 21.97 and 22.03 millimeters.

First of all, we will find z-scores for data points using z-score formula.

z=\frac{x-\mu}{\sigma}, where,

z = z-score,

x = Sample score,

\mu = Mean,

\sigma = Standard deviation.

z=\frac{21.97-22}{0.016}

z=\frac{-0.03}{0.016}

z=-0.1875

Let us find z-score of data point 22.03.

z=\frac{22.03-22}{0.016}

z=\frac{0.03}{0.016}

z=0.1875

Using probability formula P(a, we will get:

P(-0.1875

P(-0.1875  

P(-0.1875

Therefore, the probability that a randomly selected ball bearing will be acceptable is 0.1507 or 15.07%.

6 0
3 years ago
I need help asap I have multiplied and added but they don't match the answers.
Alecsey [184]

Answer:

c

Step-by-step explanation:

12.50*6=75

45.25*3=135.75

135.75+75=210.75

3 0
3 years ago
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What is 1/2 of 14? this is an algebraic expression!!
Vikentia [17]
1/2 of 14 is 7. multiply 14/1 to 1/2.
3 0
3 years ago
HELPPPPPP ASAP What is the length of the third side of the window frame below? (5 points) (Figure is not drawn to scale.) 58a 1)
ollegr [7]

Answer:

The answer is 3) 40.

Step-by-step explanation:

since you're working with the Pythagorean theorem, you should know that a^2+b^2=c^2, therefore, we know that we only have two sides. we have a and c. we know that a = 42 and c = 58, giving us the equation of 42^2+b^2=58^2,

we want to find b!

so we would simply subtract the two.

58^2 - 42^2 = b

b = 1600

now we want to square root,

b = sqrt1600

which in the end, gives us the answer of 40.

4 0
2 years ago
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