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svetoff [14.1K]
3 years ago
8

What is 2 1/4 + 3 2/4​

Mathematics
1 answer:
Daniel [21]3 years ago
7 0

Answer:

5 7/12

Step-by-step explanation:

have a great day :)

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If f(x) = 3 - 1 and g(x) = x + 2, find (f-g)(x)
Kazeer [188]

Answer:

2x² + 4x

Step-by-step explanation:

= (3 - 1)(x + 2)(x)

= (2)(x + 2)(x)

= (2x + 4)(x)

= 2x² +4x

3 0
3 years ago
An urn contains r red balls and b blue balls. One ball is selected at random from this urn, its color is recorded and it is retu
nadezda [96]

Answer:

Zero

Step-by-step explanation:

The probability of the ball being red after first selection is = (r) ÷ (r+b)

The probability of the ball being blue after first selection is = (b) ÷ (r+b)

If the ball selected is red, the total number of balls after its returned together with m number of red balls is = r+b+m

The probability of the  selection doesn't depend on the second selection, hence condition probability is zero.

However the probability of the second selection depends on the first selection.

5 0
3 years ago
What is slope if the line x=-1
spin [16.1K]

Step-by-step explanation:

Vertical line => Slope is Undefined.

6 0
3 years ago
Read 2 more answers
Is what I did a correct step?<br>If so, what is the next step?<br>​
qaws [65]
Next step would be 5x10x5
8 0
3 years ago
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
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