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KATRIN_1 [288]
4 years ago
7

{5} = \frac{10}{18} " alt=" \frac{9}{5} = \frac{10}{18} " align="absmiddle" class="latex-formula">
Determine if the following ratios form a porportion.
Mathematics
1 answer:
laila [671]4 years ago
7 0
If a/b=c/d is true, they are a proporion
if a/b=c/d, then ad=bc is also true

if 9/5=10/18 is true then
9*18=10*5 should be true
162=50
false

easier way
just simplify them
9/5 is simplified already
10/18=5/9

9/5=5/9
no


they do not

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Ally is making a scale diagram of her classroom. She uses a scale factor of 3 centimeters per foot to draw the diagram. The actu
Montano1993 [528]
18ft×3cm=54cm
20ft×3cm=60cm
54cm×60cm=3240cm
3 0
4 years ago
9. YOU BE THE TEACHER Your friend
Crank

Answer:

Step-by-step explanation:

Yes, it's reasonable.

What you are doing is solving the question by rounding. You come up with an answer. Suppose you loose the decimal somewhere and you get 0.36? Is that reasonable? Do you just write the answer in the provided blank and move on. What now?

You get it wrong?!!

But your estimate should be about 9/3 = 3. Now you look at your calculator with great misgivings, because it made a mistake. Did it or did you? Well ultimately you did, but you have to blame something. So the calculator takes the heat.

Who  knows? Maybe the decimal doesn't work. It's stuck or something. In any event you should be aware that there's no way the answer could be 0.36 when you estimate it to be 3.

8 0
3 years ago
Suppose that y varies directly with x and y=10 when x=-20. What is y when x =15?
USPshnik [31]

Answer:

15/2

Step-by-step explanation:

You want to first find the connection between the first statement, y=10 and x=20. The connection is that Y is X divided by 2. Then you want to just do the same equation to the y and keep it a fraction. (Hint. a fraction is the same as what you do to divide, its just the equation before you find your answer.) so your answer is 15/2.

Hope its right, and i hope this helped.

8 0
2 years ago
a metal rod is 4/5 meters long. it will be cut into pieces that are 1/20 meters long. how many pieces will be made from the rod
marin [14]
16 rods can be made.

common denominators. 4/5=16/20.

16/20 divided by 1/20 is 16. 16 rods
8 0
3 years ago
Read 2 more answers
What is -12 + 50 divided by (-2-3) + 72 divided by (4+2)
Ivan

Answer:


Step-by-step explanation:

(-12+50)/(-2-3)+72/(4+2)

simplify: 38/67/6

multiply by the reciprocal: 38/67*6/1

you get: 228/67

decimal: 3.402985075

6 0
3 years ago
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