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sladkih [1.3K]
3 years ago
10

last week , it rained x inches. This week the amount of rain decreased by 5%. which expressions represent the amount of rain tha

t fell this week
Mathematics
2 answers:
MArishka [77]3 years ago
7 0

0.95 x


as 0.95 is the same as decreasing by 5%

extra help:
to increase by 5% you times by 1.05x
grandymaker [24]3 years ago
7 0

Answer: Because we don't know what "x" is let "x" be 100%. So, now all you have to do is subtract 5% from 100% to get 95%.


Step-by-step explanation:

100%-5%=95%      or       0.95x

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4 = 3x -x-4<br> I need steps to how to do this​
vesna_86 [32]

Step-by-step explanation:

so first you combine like terms , 3x-x-4=4 turns into 4x-4=4 then u add 4 to both sides [inverse operations]

4x-4=4

+4 +4

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4x= 8

----------

4. 4

×=2

then u use inverse operations. agian and divide 4 into 8 and you get 2 !! x = 2

4 0
3 years ago
Read 2 more answers
Given the equation
tatiyna

Answer:

A. Subtract x from both sides: (i.e. 5+x-12 = x-7 <--> 5-12 = -7)

This equation is identically true, so it holds no matter what x is.

B. This one is pretty self-explanatory

Step-by-step explanation:

u wrote the question wrongly the answer is in answer box

This question also my teacher gives me

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8 0
3 years ago
A friend has a 83% average before the final exam for a course. That score includes everything but the final, which counts for 25
Klio2033 [76]

Answer:

\mathrm{Best\:course\:grade\:possible:\:}87.25\%,\\\mathrm{Minimum\:score\:on\:final\:to\:earn\:at\:least\:a\:75\%\:for\:the\:course:\:}51\%

Step-by-step explanation:

Assuming the maximum score for the final is 100\%, we can multiply each score by its respective course weight and add them together to give a final score. If your friend did receive this maximum score of 100\%, their overall grade for the course would be:

83(1-0.25)+100(0.25)=\fbox{$87.25\%$}.

To find the minimum score they need to earn a 75% for the course, we set up the following equation:

83(1-0.25)+x(0.25)=75, where x is the minimum score she needs.

Solving, we get:

62.25+x(0.25)=75,\\x(0.25)=12.75,\\x=\fbox{$51\%$}.

8 0
2 years ago
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hjlf

the asnwer is 14 feet 5 inches because you add feet and then inches

8 0
3 years ago
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xeze [42]

If you mean |2-2| then the absolute value is 0

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6 0
3 years ago
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