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Nikolay [14]
4 years ago
8

I need help plzzzzzz

Mathematics
1 answer:
AleksandrR [38]4 years ago
7 0
I believe the first one is 210
The party on Saturday was bigger. You know that Friday they had 31 people. Saturday they had 210 people.
The first one is 1+2(15)=31
The second one I’m not sure how to write up an equation for that because I just added 1+2+3+4+5..... and so on until 20 and got 210.
Not even sure if this is even right honestly, Just thought I’d at least try and help.
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Solve this application problem using a system of equations: The Springfield Movie Theater sold adult tickets for $4.10 each and
stiv31 [10]

65 adult tickets and 24 children tickets were sold

<u><em>Solution</em></u><u><em>:</em></u>

Let "a" be the number of adult tickets sold

Let "c" be the number of children tickets sold

Cost of 1 adult ticket = $ 4.10

Cost of 1 children ticket = $ 2.70

<em><u>Last Thursday, a total of $331.30 was collected from 89 movie watchers</u></em>

Number of movie watchers = 89

number of adult tickets sold + number of children tickets sold = 89

a + c = 89

c = 89 - a ----------- eqn 1

<em><u>They collected a total of $ 331.30</u></em>

Therefore, we frame a equation as:

number of adult tickets sold x Cost of 1 adult ticket + number of children tickets sold x Cost of 1 children ticket = 331.30

a \times 4.10 + c \times 2.70 = 331.30

4.1a + 2.7c = 331.3 ------ eqn 2

<em><u>Substitute eqn 1 in eqn 2</u></em>

4.1a + 2.7(89 - a) = 331.3

4.1a + 240.3 - 2.7a = 331.3

Combine the like terms

1.4a = 331.3 - 240.3

1.4a = 91

<h3>a = 65</h3>

<em><u>Substitute a = 65 in eqn 1</u></em>

c = 89 - 65

<h3>c = 24</h3>

Thus 65 adult tickets and 24 children tickets were sold

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Answer:

Step-by-step explanation:

In exponents multiplication, if bases are same, add the powers

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Factor: y = x^7 + 65x^4 + 64x​
nignag [31]

Answer:

y=x^7+65x^4+64xu200b

Step-by-step explanation:

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