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erma4kov [3.2K]
3 years ago
8

Twenty students bought tickets for a school party. All of the money received for these 20 tickets was used to purchase beverages

. Then, an additional 10 students bought tickets. Rather than use this additional money to buy more refreshments, all 30 students received a $3.00 refund. How many dollars were used to buy beverages?​
Mathematics
2 answers:
Charra [1.4K]3 years ago
3 0

Answer:

87

Step-by-step explanation:

joja [24]3 years ago
3 0

Answer:

$87 were used on beverages

Step-by-step explanation:

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What’s the inverse of the function f(x)=7x+2
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If K(3, -7) is rotated 270°, what will be the coordinates of its image
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Answer:

<em>Given </em><em>point </em><em>is </em><em>K </em><em>(</em><em> </em><em>3</em><em>,</em><em> </em><em>-</em><em>7</em><em> </em><em>)</em>

Step-by-step explanation:

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Elza [17]

Question is Incomplete; Complete question is given below.

Which expressions are equivalent to 8 (negative 10 x + 3.5 y minus 7)? Select two options. Negative 80 x + 24.5 y minus 56 Negative 80 x + 28 y minus 56 80 x + 28 y + 56 4 (negative 20 x + 7 y minus 14) Negative 4 (negative 20 x + 7 y minus 14)

Answer:

Negative 80 x + 28 y minus 56

4 (negative 20 x + 7 y minus 14)

Step-by-step explanation:

Given:

8(-10x+3.5y-7)

We need to find the equivalent expression for given expression.

Solution:

8(-10x+3.5y-7)

First we will apply distributive property for given expression.

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So we get;

8\times-10x+8\times3.5y-8\times7\\\\-80x+28y-56

Hence first expression equivalent to given expression is -80x+28y-56.

Now again evaluating the expression we get;

We will take 4 as common factor from the expression we get;

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Hence second expression equivalent to given expression is 4(-20x+7y-14).

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