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Leona [35]
3 years ago
15

What division expression represents the average number of people

Mathematics
1 answer:
Sergeeva-Olga [200]3 years ago
4 0

y=?

y/?

i hope this is the answer im glad to help

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Which is a unit rate?<br> 3:5 2:6 4:7 5:1
kogti [31]

Step-by-step explanation:

all......................

5 0
3 years ago
A university has 750 female students and 2250 male students. Thirty per cent of female students study chemistry and 60% of male
UNO [17]

Answer:

1/7 or 14.3%

Step-by-step explanation:

30% of 750 = 225  (females who study chemistry)

60% of 2250 = 1350  (males who study chemistry)

1575 = total students studying chemistry

P (female chemistry student) = 225/1575 = 1/7 (simplified)

1/7 = 14.3%

7 0
2 years ago
1.Mr. Bowen’s test is normally distributed with a mean of 75 and a standard deviation of 3 points.
lianna [129]

Answer:

2.28%

Step-by-step explanation:

Mr. bowens test is normally distributed with a mean (μ) of 75 and a standard deviation (σ) of 3 points.

The z score is used in probability to show how many standard deviation is a raw score below or above the mean. The formula for the z score (z) is given by:

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

For a raw score (x) of 81 points, the z score can be calculated by:

z=\frac{x-\mu}{\sigma}=\frac{81-75}{3}=2

Therefore from the normal probability distribution table, the probability that a randomly selected score is greater than 81 can be given as:

P(x > 81) = P(z > 2) = 1 - P(z < 2) = 1 - 0.9772 = 0.0228 = 2.28%

7 0
3 years ago
A television transmitter tower is 400 feet high. if the angle between the guy wire (attached at the top) and the tower is 51.8°,
vova2212 [387]
Let the length of the guy wire be x feet.
cos 51.8 = 400/x
x = 400/cos 51.8 = 646.82 feet.
The answer is 646.82 feet.
8 0
3 years ago
How to take 1.20 into a faction
sergejj [24]

<em>Answer:</em>

<em>Convert the decimal number to a fraction by placing the decimal number over a power of ten. Since there is  1   number to the right of the decimal point, place the decimal number over  </em>

<em>10  1 </em>

<em> (10 ). Next, add the whole number to the left of the decimal. </em>

<em>1  2 /10 </em>

<em>Reduce the fractional part of the mixed number. </em>

<em>1  1 /5 </em>

<em>Reduce the fraction. </em>

<em>6/ 5 </em>

<em />

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

<em />

6 0
3 years ago
Read 2 more answers
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