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skad [1K]
2 years ago
6

10. Choose all fractions equivalent to 36/40 A) 3/4 B) 9/10 C) 9/40 D) 18/20

Mathematics
2 answers:
Talja [164]2 years ago
5 0

Answer:

B, D

Step-by-step explanation:

36/40 simplified is 9/10

9/10 x 2  = 18/20

I hope this helps!

Zarrin [17]2 years ago
4 0
B) 9/10
9 times 4 =36
10times4 =40
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evablogger [386]
This question is all about dimensional analysis.  The whole idea behind dimensional analysis is that you multiply a starting value with different conversion factors to cancel out units you don't want to tern the value into the units that you do want.  The conversion for yards to feet can be written as 3 feet/yard (this is the conversion factor it can be written as 3feet/1yard or 1yard/3feet, it depends on what you are starting with).  If you start out with yards and and want to go to feet you have to multiply the number of yards by 3feet/yard so that the yards cancel out leaving you with feet.  If start out with feet and want to go to yards you divide the number of feet by 3feet/yard so that the feet cancel out and you are left with yards.

In your question Tom is trying to go from feet to yards.  Therefore he has to divide the number of feet by 3feet/yard to get feet to cancel out.  His mistake was that he multiplied by 3feet/yard instead of divide by 3feet/yard.  The correct way do it is divide 379 feet by 3feet/yard to get 126.33 yards.

Let me know if anything is unclear to you in the comments.  This is a very important skill to learn since this is the basis of many high school and college science classes.
I hope this helps.
7 0
3 years ago
The sum of two numbers is 43. The larger number is 21 more than the smaller number. What are the numbers?
german

Answer:

The numbers are 11 and 32.  Add to get a sum of 43, and subtract to get a difference of 21.  

Step-by-step explanation:

5 0
2 years ago
Can please someone help me out and explain it step by step. Thank you
Anit [1.1K]

Answer:x=7, \ y=-2

Step-by-step explanation:

Given

Equations are 3x-y=23 and 2x+3y=8

take 3x-y=23

y=3x-23

Put the value of y in another equation

\Rightarrow 2x+3(3x-23)=8\\\Rightarrow 2x+9x-69=8\\\Rightarrow 11x=77\\\Rightarrow x=7

Put the value of x in y

y=3(7)-23=21-23=-2

Hence, x=7, \ y=-2

7 0
2 years ago
Plot a point at the y-intercept of the following function on the provided graph.<br> 3y = -5* + 7
Lorico [155]
The answer is y= 2/3 or y= -35/3
Hope this helps!
4 0
3 years ago
Help please algebra 8th grade need to finish ASAP!!<br><br> A.27<br> B.33<br> C.60<br> D.93
Alex787 [66]
C.60 its the same size and shape as the 60 above it
7 0
3 years ago
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