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yan [13]
3 years ago
12

If alc and ab = c, prove that alb

Mathematics
1 answer:
balandron [24]3 years ago
3 0

Answer:

This isn't true.

Step-by-step explanation:

Think of the case a=2, b=3 and c=6. We have that a|b, since 2|6.

We also have that ab=c, since 2*3=6. However, it is NOT true that a|b, as 2 does NOT divide 3. As this you can construct many other examples where a|c and ab=c BUT a does NOT divide b.

Other counterexamples:

a=2, b=5, c=10

a=2, b=7, c=14

a=2, b=11, c=22

a=2, b=13, c=26

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Y_Kistochka [10]

I believe it's A, sorry if it's incorrect. ^-^'

4 0
3 years ago
Which two ratios form a proportion
Leokris [45]

Answer: Two equivalent ratios form a proportion. Equivalent ratios have the same value.

7 0
3 years ago
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fgiga [73]
Hopes this helps:

Answer: x = -2, -2/3

If it wrong I am sorry
6 0
2 years ago
Read 2 more answers
Help me pleaseee guys
mario62 [17]

Answer:

Slope-Intercept: y = -x + 5

Point-Slope: y - 5 = -1x

Step-by-step explanation:

Slope intercept is known as y = mx + b, where m is the slope, and b is the y-intercept. To find slope, you can count or use the slope formula, and you should get -1. The y intercept is where x = 0, and in this case, b = 5.

Point slope can be altered to make slope intercept so this makes this part easier. The general formula is y - y1 = m(x - x1), where y1 and x1 are coordinate points and m is the slope. We already know slope from earlier, -1, so now we just need a coordinate point. You could use (0, 5). Now plug in the points; 0 for x1 and 5 for y1. Simplify and you're done.

4 0
3 years ago
I NEED HELP ASAPP!!!​
Llana [10]

Answer:

c

Step-by-step explanation:

x - 2y = -8 \\y = 5x-2

x - 2 y = - 8

add -x to both sides

x - 2y - x = -8 - x \\- 2y = -8 - x

multiply both sides by -1/2

-2y * (\frac{-1}{2} ) = (-8-x) (\frac{-1}{2} )

y = 4 + \frac{x}{2} \\y = \frac{x}{2} + 4

the equations don't have the same slope so they aren't parallel

The solpes product doesn't equal -1 so they aren't perpendicular

4 0
4 years ago
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