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KengaRu [80]
3 years ago
12

Mrs.Morales wrote a test with 15 questions covering spelling and vocabulary.Spelling questions(x)are worth 5 points and vocabula

ry questions (y) are worth 10 points. The maximum number of points possible on the test is 100.
Mathematics
2 answers:
Cloud [144]3 years ago
7 0
X + y = 15.......x = 15 - y
5x + 10y = 100

5(15 - y) + 10y = 100
75 - 5y + 10y = 100
-5y + 10y = 100 - 75
5y = 25
y = 25/5
y = 5.....there were 5 vocabulary questions

x + y = 15
x + 5 = 15
x = 15 - 5
x = 10......there were 10 spelling questions
leonid [27]3 years ago
3 0
X=10 y=5 would be the answers I'm not sure on the equation
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Complete Questions:

<em>Create an equation with a solution closest to 0 using digits 1 to 9 </em>

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<em></em>

Answer:

See Explanation

Step-by-step explanation:

Given

_x + _ = _x + _

Required

Fill in the gap using 1 to 9 to give a result close to 0

First, you have to determine what kind of numbers that are close to 0;

In this case, I'll work with -0.4 to 0.4 because the number in this range approximate to 0;

Next, is to fill in the gaps using trial by error method

5x + 2 = 2x + 3

Checking the above expression

<em>Collect Like Terms</em>

<em></em>5x - 2x = 3 - 2<em></em>

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Another trial is

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Checking the above expression

<em>Collect Like Terms</em>

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<em>I'll stop here but note that, there are more expressions that can fill in the gaps</em>

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