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saveliy_v [14]
2 years ago
9

In Mrs. Robinson's class, there are 16 girls and 14 boys. The mean of the girls' heights is 63.7 inches, and the mean of the boy

s' heights is 65.4 inches. What is the mean of the heights of all 30 students? Express your answer as a decimal to the near tenth.
Mathematics
1 answer:
Elodia [21]2 years ago
8 0

Answer: 64.6

Step-by-step explanation:

If you add up 63.7 and 65.4 and then divide by 2 you get 64.6.

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Two more than a number n equals -6.
Elenna [48]

Answer:

2+n=-6

Step-by-step explanation:

To simplify n

n=-8

8 0
2 years ago
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Casey's sister is 3 times as old as he is. His sister is 21 years old. Let c represent Casey's age. Which of the following would
algol13

Answer:

casey's age is 7

Step-by-step explanation:

if his sister is 3 times as old as he is then she is older therefore you would devide.

21/3=7

5 0
3 years ago
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Plz help no links :)
Ilya [14]

Answer:

C) f(x) = 6.25x + 3

Step-by-step explanation:

In order to know which one of the functions could produce the results in the table we simply need to substitute the number of candy bars for x in the function and solve it to see if it provides the correct total weight shown in the table. If we do this with the functions provided we can see that the only one that provides accurate results would be

f(x) = 6.25x + 3

We can input the # of candies for x and see that it provides the exact results every time as seen in the table.

f(x) = 6.25(1) + 3 = 9.25

f(x) = 6.25(2) + 3 = 15.50

f(x) = 6.25(3) + 3 = 21.75

f(x) = 6.25(4) + 3 = 28

4 0
3 years ago
A square piece of fabric has an area of 595 cm2.
inna [77]
To find the length of the side, will take the under root of the area. So, the side will be :

c) 24.4 cm
8 0
3 years ago
Realice la óperacion y exprese el resultado en notación científica (0,00000826) (235×10 elevado a -7) sobre 0,0017×10 elevado a
earnstyle [38]

Answer:

1,42 * 10 ^ -5

Step-by-step explanation:

La notación científica también se conoce como forma estándar.

Tenemos que realizar la siguiente operación y dejar el resultado en forma estándar.

Entonces;

0,00000826 * 235 × 10 ^ -7 / 0,0017 × 10 ^ -2

También;

8.26 * 10 ^ -6 * 2.35 * 10 ^ -5 / 1.7 * 10 ^ -5

= 19,411 * 10 ^ -11 / 1,7 * 10 ^ -5

= 1,42 * 10 ^ -5

6 0
2 years ago
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