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aleksley [76]
4 years ago
9

Please help please please plzzz

Mathematics
1 answer:
grandymaker [24]4 years ago
5 0
The answer is C something like a step - by - step explanation
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HELP ME PLZ WILL MARK U AS BRAINLIEST
natulia [17]

Answer:

Step-by-step explanation:

a)

The mean for ground floor is 20.67

The mean for balcony is 15.8

b)

the difference between the means is ground floor - balcony

20.67 - 15.8 = 4.87

You can talk about it yourself for part c

3 0
3 years ago
At a particular restaurant, each pizza roll has 60 calories and each mini hotdog has 70 calories. A combination meal with pizza
PolarNik [594]

Answer:

There are 9 pizza rolls and 12 mini hotdogs in the meal.

Step-by-step explanation:

We are given the following in the question.

Let x be the number of pizza rolls sold and y be the number of mini hotdogs in the combination meal.

Total number of items in combination meal = 21

Thus, we can write the equation:

x + y = 21

Calorie in a pizza roll = 60

Calorie in a mini hotdog = 70

Total calories = 1380

Thus, we can write the equation:

60x + 70y = 1380

Solving the two equations, we get,

60x + 70y - (60x+60y) = 1380 - 60(21) \\10y = 120\\\Rightarrow y = 12\\\Rightarrow x = 21-12 = 9

Thus, there are 9 pizza rolls and 12 mini hotdogs in the meal.

4 0
4 years ago
Select the equations in point-slope form for the line below (CHOOSE TWO EQUATIONS)
Crank

Answer:

y-3=\frac{4}{3}\left(x-1\right) and y+1=\frac{4}{3}\left(x+2\right)

Step-by-step explanation:

Here is how I found out the answers, i graphed them on Desmos:

y+1=\frac{4}{3}\left(x+2\right)=solid red line

y-3=\frac{4}{3}\left(x-1\right) = dotted black line

Hope this helps! Brainliest would be much appreciated! Have a great day! :)

3 0
2 years ago
CAN SOMEONE PLEASE HELP ME
Natalka [10]
Ima say supplementary
6 0
3 years ago
Read 2 more answers
Last month, Mr. Douglas sold 36 of his books. This month, however, he only sold 8 books. What was the percent change in book sal
Luden [163]

Answer:

A decrease of 3.5%

Step-by-step explanation:

since 36-8 is 28, it went down a bit so it would be 3.5%

7 0
3 years ago
Read 2 more answers
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