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marusya05 [52]
2 years ago
10

at a summer camp 23 of the boys and 17 of the girls can swim there nine boys 11 girls at the camp who cannot swim. what is the r

atio or the number of children who can swim to the number of children who cannot swim.
Mathematics
1 answer:
Sedbober [7]2 years ago
8 0

Answer:

4×30+5×30=120+150=270

Step-by-step explanation:

looking at the last row, we can see that the total number of students will be 4×30+5×30=120+150=270

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Rewrite the expression by factoring out the coefficient of the variable.​
mart [117]

Answer:

-  \frac{1}{2} x + 6

by factorising out -½ :

{ \boxed{ \boxed{  =  -  \frac{1}{2} (x - 12)}}}

8 0
2 years ago
If 20 coins are tossed, find the probability that they'll all land on tails.
marishachu [46]
The probability would be split for this problem cause knowing with 20 coins , you can split that even amount ... here's what I would do..


Michelle has 20 coins , but only half of them land on heads and others on tails


As for a half , halves are always equaling to 1/2 or 50 (%)  knowing we have 20 , you can evenly split that number of coins in a equal position

So ask your self .. what is half of 20? hmmm .. oh I got it , its 10! so knowing you have 20 but then later you split into half which is 10 ... meaning and knowing you have a 50% probability of getting the 20 coins hitting onto tails

hope this helps!

4 0
3 years ago
The total area of a prism can be found by multiplying the perimeter of the base times the height of the prism.
Anna35 [415]
It is false that the <span>total area of a prism can be found by multiplying the perimeter of the base times the height of the prism. If you did that, you'd get the lateral area of that prism, and not the total area. You'd need to add the area of both bases in order to calculate what the total area of a prism is. </span>
4 0
3 years ago
Gary and Jessica exercise for a total of 18 hours per week. Jessica exercises 2 less than 3 times the hours that Gary exercises.
horsena [70]
<h3>Answer:  5</h3>

Work Shown:

g = number of hours that Gary exercises

3g-2 = number of hours that Jessica exercises

(g) + (3g-2) = 18

4g-2 = 18

4g = 18+2

4g = 20

g = 20/4

g = 5

Gary exercises 5 hours per week.

3 0
1 year ago
Please help me on this one ​
NikAS [45]

Answer:

55.4 in³

Step-by-step explanation:

The formula for the volume of a pyramid can be found:

V = \frac{1}{3}Bh, where B = area of the base and h = height of the pyramid

Since the base is a triangle, we need to use the formula for the area of a triangle:

A = \frac{1}{2}bh = \frac{1}{2}(5.7)(6.2)=17.67in^{2}

Next, multiply the area of the base by the height of the pyramid:

17.67 x 9.4 = 166.098 ÷ 3 ≈ 55.4 in³

3 0
3 years ago
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