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Rom4ik [11]
4 years ago
13

What's -3a(5a-7) ? I can't figure It out .

Mathematics
2 answers:
DochEvi [55]4 years ago
6 0
I think maybe -15 but I’m not sure
steposvetlana [31]4 years ago
3 0
It is - 15 a ^ 2 + 21 a.
You use distributive property
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10. At the end of the day, Mandy sold the rest of her hot dogs at her hot dog stand for half price. 50
vekshin1

Answer:

56

Step-by-step explanation:

Firstly, we know she sold 24 hot dogs at half price. We do not know the total number of hot dogs.

Secondly, we know that 30% of the hot dogs were sold at half of the price. This means 70% were sold at full price.

Now there are two approaches to this. I'm going to take the easier one.

What we are expressing mathematically is that 30% of a certain number equals 24. Let the total number of hot dogs she had that day at her stand be x.

This mean 30% of x = 24.

30/100 × x = 24

30x = 24× 100

30x = 2,400

x = 2,400/30 = 80.

This means she had a total of 80 hot dogs that day. Since we know the number she sold at half price, it's now easy to calculate the number she sold at full price.

This number now equals 80 - 24 = 56 hot dogs.

This mean Mandy sold 56 hot dogs at full price.

4 0
3 years ago
6x over 11 =12over 11
Veronika [31]
The answer is x=2 you’re welcom
6 0
3 years ago
Find the mean for each data set.
Fittoniya [83]

Answer:

14

Step-by-step explanation:

you add them all up and divide by how much there are

(10+11+12+13+14+15+16+17+18)=126

(126/9)=14

7 0
3 years ago
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The radius of the moon is approximately 1,350,000 m. What is the radius in kilometers? (1 km=1000m)
serg [7]

Answer:

I believe it is 1,350 but i am not completely sure

Step-by-step explanation:

7 0
3 years ago
I need help with question number 3.
bezimeni [28]

Answer:

F

Step-by-step explanation:

if you put 6 red apples and 7 green apples in each basket then you will have 6 identical baskets of 6 red apples and 7 green apples.

5 0
3 years ago
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