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Cloud [144]
4 years ago
9

NEED HELP WITH TWO MATH QUESTIONS REALLLY EASY PLEASE SHOW WORK!! FIRST TO ANSWER IS BRAINIEST AND 35 POINTS!!! NEED QUESTION 4

AND QUESTION 7
Mathematics
1 answer:
Gekata [30.6K]4 years ago
5 0
Um... where r the questions that ur asking?
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I need help answer 6 through 7 I can't figure them out
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3 years ago
Determine whether quantities vary directly or inversely and find the constant of variation.
Anton [14]
Divide 25/4 to figure out how many essays the teacher grades in 1 hour.
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4 years ago
Read 2 more answers
Write the inverse variation function given that y varies inversely with x, and y = 0.25 when x = 8.
storchak [24]

Answer:

Step-by-step explanation:

If a given variable varies inversely with another variable, an increase in the value of the given variable would cause a corresponding decrease in the value of the other variable. Also, a decrease in the value of the given variable would cause a corresponding increase in the value of the other variable.

If y varies inversely with x, we would introduce a cost of variation, k so that the expression becomes

y = k/x

When y = 0.25, x = 8

Substituting into the expression above, it becomes

0.25 = k/8

k = 0.25 × 8

k = 2

The inverse variation function is

y = 2/x

5 0
3 years ago
Solve. 3n-7+2n=8n+11
Bezzdna [24]
------------------------------------
<span>Question:
</span>------------------------------------<span>
3n - 7 + 2n = 8n + 11

------------------------------------
Combine like terms:
</span>------------------------------------<span>
5n - 7 = 8n + 11

</span>------------------------------------<span>
subtract 8n from both sides:
</span>------------------------------------<span>
-3n - 7 = 11

</span>------------------------------------<span>
Add 7 to both sides
</span>------------------------------------<span>
-3n = 18

</span>------------------------------------
Divide by -3 on both sides:
------------------------------------
n = -6

------------------------------------
Answer: n = -6
------------------------------------
5 0
3 years ago
Help please this is 7th grade math
kodGreya [7K]

Answer:

60n + 15 = 90n+12

Step-by-step explanation:

i think its this but not sure

3 0
3 years ago
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