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juin [17]
3 years ago
6

Can someone help me solve this !!

Mathematics
1 answer:
Norma-Jean [14]3 years ago
8 0

Answer:

27

5x-13=3x+3

2x-13=3

2x=16

x=8

3(8)+3

24+3

27

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Mrs. Levi's class raised $217.35 in one-time donations for the library's new book collection. The class also had 4 people pledge
nexus9112 [7]

Answer: $817.35

Step-by-step explanation:

150x4 = 600

600+217.35 = 817.35

7 0
4 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
3 years ago
What is 6 divided by 2,750
enyata [817]

Answer:

458.333333333333

Step-by-step explanation:I divided it using my


3 0
3 years ago
What is the slope ? Simplify your answer and write it as a proper fraction
katovenus [111]
Answer: 1/2

(0,80) (90,20)

Use Slope Formula m= (y1-y2)/(x1-x2)

90-80/20 = 1/2

Your slope is 1/2
4 0
3 years ago
Y=x+1, xy+2x=0<br><br> Help please
Vsevolod [243]

Answer:

x = 0,-3

y = 1,-2

Step-by-step explanation:

We can substitute x+1 for x in the second equation

x(x+1) + 2x = 0

x^2 + 3x = 0

x(x+3) = 0

x = 0,-3

y = 1,-2

7 0
4 years ago
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