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azamat
3 years ago
7

Emilio’s age is four years more than half the age of his sister Rosa. The sum of their ages is 28. How old is Rosa?

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
5 0
Rosa is 16 years old
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A bottle holds z ounces of water. A second bottle holds 16 ounces, which is 8/5
Katen [24]

Answer:

The first bottle holds 25 3/5 ounces of water.

Step-by-step explanation:

16 x 8/5

= 16/1 x 8/5

= 128/5

= 25 3/5

5 0
2 years ago
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The mean number of words per minute (WPM) typed by a speed typist is 149 with a standard deviation of 14 WPM. What is the probab
Troyanec [42]

Answer:

78.81%

Step-by-step explanation:

We are given;

Population mean; μ = 149

Sample mean; x¯ = 147.8

Sample size; n = 88

standard deviation; σ = 14

Z-score is;

z = (x¯ - μ)/(σ/√n)

Plugging in the relevant values;

z = (147.8 - 149)/(14/√88)

z = -0.804

From z-distribution table attached, we have; p = 0.21186

P(X > 147.8) = 1 - 0.21186 = 0.78814

In percentage gives; p = 78.81%

6 0
2 years ago
PLEASE HELP ME IM NOT GOOD AT MATH
zhannawk [14.2K]

Answer:

14

Step-by-step explanation:

There are 3 even and 3 odd sides meaning its a 50/50 chance for either to happen each time you roll. This means half of the results are expected to be odd and even.

8 0
2 years ago
How to solve 3x/7 - 1/2 = 1/14
nlexa [21]

Answer: 4/3

Step-by-step explanation:

First off, we should all get the denominators to be the same.

14 is the LCM of each of the denominators, so:

3x / 7 times 2/2 = 6x/14

-1/2 times 7/7 = -7/14

and 1/14 is 1/14

So now we have

6x/7 + -7/14 = 1/14

We can multiply everything by 14 to get rid of the denominator completely, which leaves us with:

6x - 7 = 1

Then we just solve like a normal equation:

6x = 8

x = 8/6 , or 4/3

8 0
3 years ago
Please please help please
masha68 [24]

Answer:

4 times larger

Step-by-step explanation:

3 0
2 years ago
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