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Sedaia [141]
3 years ago
6

Please help me asap! Could you please explain how you got the answer

Mathematics
1 answer:
svetoff [14.1K]3 years ago
7 0

Answer:

B) 23

Step-by-step explanation:

Table:          <u>  Algebra | No algebra | Total</u>

Physics        |      4           Step 1: 8      12

No physics  |Step 2: 15

Total            |      19                              30

We look for the number of people who are in algebra and no physics or physics and no algebra.

1. 12 - 4 = <em>8</em>

2. 19 - 4 = <em>15</em>

3. We find the total of those numbers: <em>15 + 8 =</em> 23

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-4y+20=-x solve for y
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Answer:

y = x/4 + 5

Step-by-step explanation:

Solve for y:

20 - 4 y = -x

Hint: | Isolate terms with y to the left-hand side.

Subtract 20 from both sides:

-4 y = -x - 20

Hint: | Solve for y.

Divide both sides by -4:

Answer: y = x/4 + 5

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3 years ago
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In a certain​ country, the mean birth weight for boys is 3.27 ​kg, with a standard deviation of 0.51 kg. Assuming that the distr
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Answer:

0.066

Step-by-step explanation:

We solve this question using z score formula

z = (x-μ)/σ, where

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μ is the population mean

σ is the population standard deviation

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x = 2.5

Hence:

z = 2.5 - 3.27/0.51

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Probability value from Z-Table:

P(x ≤ 2.5) =P(x < 2.5) = P(x = 2.5) =

=0.065547

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5 0
3 years ago
How much interest is earned on $2,700 in one year if it is invested at 3%?
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3 years ago
Which of the following is a proportion?
Anestetic [448]

Answer:

the first one

Step-by-step explanation:

because 4/6=2/3

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so 4/6=6/9

6 0
2 years ago
What fraction is 6 of 18​
Leto [7]

Answer:

1/3

Step-by-step explanation:

6 of 18 = 6/18

Divide by 6, the GCF of the two numbers 6 and 18, to get 1/3.

6 is 1/3 of 18.

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3 years ago
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