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zzz [600]
3 years ago
7

Please help me!! Will give Brainiest and stars if correct. Please help!

Mathematics
2 answers:
BARSIC [14]3 years ago
8 0
6 plus 6 is 12 then 12 plus 3 is 15 then 15 plus 3 and 3 is 21 then we do 21 plus 4.2 is 25.4 plus 3 is 28.4 hope this helps
Elina [12.6K]3 years ago
5 0
The guy above me is correct
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Allen's miniature train travels at a rate of 20 meters in 2 minutes. At this rate, how far will the train travel in 10 minutes?
Sav [38]

Answer:

100 meters  20/5=100

Not sure about the second one

hope this helps

Step-by-step explanation:

8 0
3 years ago
The sum of the reciprocals of two consecutive even integers is 7/24. Write an equation that can be used to find the two integers
sergejj [24]
Assume the first even integer is x.
The next even integer will be 2 digits after this digit. So the next even integer will be x+2.

The reciprocals of these two even integers can be written as \frac{1}{x} and \frac{1}{x+2} respectively.

The sum of their reciprocals is 7/24. So we can set up the equation as:

\frac{1}{x}+ \frac{1}{x+2}= \frac{7}{24}

Taking LCM on left hand side:

\frac{x+2+x}{x(x+2)}= \frac{7}{24} \\  \\ 
 \frac{2x+2}{ x^{2} +2x}= \frac{7}{24}

Cross Multiplying the denominators:

24(2x+2)=7({ x^{2} +2x}) \\  \\ 
48x+48=7 x^{2} +14x \\  \\ 
7 x^{2} +14x-48x-48=0 \\  \\ 
7 x^{2} -34x-48=0 \\  \\ 



Using the quadratic formula to solve the above equation:
7 x^{2} -34x-48=0 \\  \\ 
x= \frac{34+- \sqrt{1156+1344} }{14} \\  \\ 
x= \frac{34+- \sqrt{2500} }{14} \\  \\ 
x=\frac{34+-50 }{14} \\  \\ 
x=6 \\ x=- \frac{8}{7} 


Since, the value of x can only be an integer, we discard the fractional value and keep x=6

So the first even integer is 6 and the next even integer is 8. The sum of reciprocals of 6 and 8 is 7/24

5 0
3 years ago
on Monday Jimmy went to see a movie that was 112 minutes long jimmy was late and missed first 12 minutes of the movie what fract
fgiga [73]

Answer:

100 / 112

Step-by-step explanation:

100 miniuts is a part of 112 adn is not a fraction and it does not say to siplify so you should be good.

6 0
3 years ago
What are the solutions of the equation 4x2 + 3x = 24 – x?
Phantasy [73]
Answer is -3 or 2  
its B
3 0
3 years ago
Read 2 more answers
Which expression is equivalent to<br> 19 - 27?
Bingel [31]

Answer:

-8

Step-by-step explanation:

19 take away 27

27-19=8

inverse would be -8

8 0
3 years ago
Read 2 more answers
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