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2 years ago

A and B are complementary. If B = 26°, what is the measure of A?

Mathematics

1 answer:

Talja [164]2 years ago

8 0

Answer:

64°

Step-by-step explanation:

When angles are complementary, they can be added together to equal 90°.

90° - 26° = 64°

The measure of angle A is 64°.

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Find the equation of the lines perpendicular and parallel to 2x-3y=8 line through the point (-2,-4)

marysya [2.9K]

Answer:

y= -1.5x-7 is the equation of the perpendicular line

Here's why:

when we convert 2x-3y=8 to standard form, we get y= 2/3x-8/3. This means the perpendicular line will have a slope of the negative reciprocal of the original one, so the perpendicular slope is -1.5. When we substitute the points (-2,-4) into the equation y=-1.5x+b, we get a b value of -7. So the perpendicular line equation is y= -1.5x-7. You can't the parallel line equation with the points (-2,-4) as it is part of the line 2x-3y=8.

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3 years ago

Write a cosine function that has a midline of 3, an amplitude of 4 and a period of pi.

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Step-by-step explanation:

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3 years ago

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coldgirl [10]

I wish I could tell you, I’m stuck on it too

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3 years ago

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The population of Algebraville is 500,000 and growing at 6.25%. How many people will live in Algebraville in 10 years? 20?

otez555 [7]

This would be exponential growth
A= 500,000(1+.0625)^10
=500,000(1.0625)^10
=500,000* 1.83353577126
the population after 10 years= 916,767
A=500,000(1+.0625)^20
=500,000(1.0625)^20
=500,000* 3.36185342451
the population after 20 years would be= 1,680,926

8 0

3 years ago

At an university 70% of the students who attend stay on campus. If 1,380 of the students who attend live off campus, what is the

Alborosie

Answer:

4600

Step-by-step explanation:

We can write a proportion to find the total amount who attend university using the information given. A proportion is two equivalent ratios set equal to each other. Since 70% live on campus, then 30% live off campus and we are told that number is 1,380.

$\frac{30}{100}=\frac{1380}{y}$

We will cross multiply the numerator of one ratio with denominator of the other. And then solve for y.

30y=100(1380)

30y=138000

y=4600.

There are 4600 students who attend the university.

7 0

3 years ago