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Kay [80]
3 years ago
10

I Don't Know!!!

Mathematics
1 answer:
liq [111]3 years ago
5 0

Answer:

They sold 10 videos and 30 CDs

Step-by-step explanation:

So, you need two different equations-

We will use c to represent CDs and v to represent videos

So-

c + v = 40

4c + 6v = 180

Single out a variable in the first equation-

v = 40 - c

Because this is equal to v, insert it where v is in the second equation-

4c + 6(40 - c) = 180

Multiply-

4c + 240 - 6c = 180

Solve-

-2c + 240 = 180

-2c = -60

c = 30

Now that you know c, use first equation to find v-

30 + v = 40

v = 10

So c = 30 and v = 10

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On Saturday, Simone’s volleyball team will be having a family picnic. Hot dogs are sold at the local store with 10 hot dogs in a
yulyashka [42]

Answer:The correct answer is 4 packages of hot dogs and 5 packages of hot dog buns

Explanation:

To find the least number of packages of each item the team has to buy, it is necessary to find the Least Common Multiple of the two numbers (10 and 8), which is the lowest integer that is multiple of both 10 and 8, and therefore represents the least number of hot dogs and hot dog buns the team has to buy to get the same number of the two items. Now, to find the LCM follow this process:

1. List the two numbers

10

8

2. Now, find the multiplies of each number

10 x 1 = 10 / 10 x 2= 20/ 10 x 3= 30 / 10 x 4 = 40...

8 x 1= 8/ 8 x 2 = 16 / 8 x 3 = 24 / 8 x 4 = 32 / 8 x5 = 40...

3. Notice the first common number in both, in this case, 40 because 10 x 4 = 40 and 8 x 5= 40.

This means the Least Common Multiple is 40, and therefore the team should buy 40 of each item. Additionally, this means they need to buy 4 packages of hot dogs (each package contains 10 units) and 5 packages of hot dog buns (each package contains 8 units).

5 0
3 years ago
Explain how you can determine if 1/3 and 4/12 are equivalent fractions
miv72 [106K]
<span>4/12 = 2/6 = 1/3 is your Answer</span>
7 0
3 years ago
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Rhonda tutors students after school. She charges $25 per hour to tutor math students and $30 per hour to tutor science students.
harina [27]

Answer:D

Step-by-step explanation:

3 0
3 years ago
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What are the factors of 2x^2+3x-54? Check all that apply.
Igoryamba

Hello from MrBillDoesMath!

Answer:

(x + 6) (2 x - 9)

Discussion:

6 and -9 are the factors of the constant term as 6 * (-9) = -54

The x term is given by  -9x + 12x  = 3x   (multiply the factorization out)


Regards,  

MrB




4 0
4 years ago
Evaluate the expression if a = 4, b = 9, and c = 1.
uranmaximum [27]

Answer:

Given - a = 4

b = 9

c = 1

To find - Value of equation

Solution -

3b ÷ c^1 - a

Putting the value of a,b and c in the equation

3(9) ÷ (1)^1 - 4

27 ÷ 1 - 4

27 ÷ (-3)

27 × (1 /(-3)

27/(-3)

(-9)

3 0
3 years ago
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