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2 years ago

If a=(-1, -3) and b=(11, -8) what is the length of ab?

Mathematics

1 answer:

professor190 [17]2 years ago

8 0

Answer: D. The length is 13 units.

Step-by-step explanation:

(-1, -3 ) Find the difference between the x values and y values.

(11, -8)

-3-(-8) = 5

-1-11 = -12 now find the absolute values.

The absolute value of 5 is 5 . The absolute value of -12 is 12.

Now use the Pythagorean Theorem formula a^2 + b^2 =c^2 where c square is the length between AB.

5^2 + 13^2 = C^2

25 + 144 = c^2

169=c^2

c= 13

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2 years ago

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3 years ago

Read 2 more answers

True or False? Tell whether the pair of ratios form a proportion. 4/5 and 5/6 Please explain why you chose what you chose

ivann1987 [24]

Answer:

False. The products from cross multiplication are different.

Step-by-step explanation:

To know if a pair of ratios form a proportion, cross multiply. If the products are equal, they are a proportion.

Write like this to see top (numerator) and bottom (denominator) clearly.

$\frac{4}{5} =\frac{5}{6}$

Multiply each numerator with the other side's denominator:

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2 years ago