All categories

2 years ago

∠A and ∠B are complementary angles. If m∠A is 30∘, what is the measure of ∠B?

Mathematics

1 answer:

solong [7]2 years ago

3 0

Answer:

Step-by-step explanation:

90-30 = 60

Remember, Complementary angles always = 90°

Supplementary always equals 180°

You might be interested in

There are 625 students in Weaver Junior High School. Jimmy surveyed the 30 students in his English class regarding their favorit

patriot [66]

Answer:

I love you too luv uip basin MA unsa ka luv Amfing ara luv ha ayaw pod tawn ana man

6 0

2 years ago

To determine what apartment renters want, the manager randomly surveyed eight renters in each of the six buildings in the comple

Zina [86]

Two thirds is equal to 66.666666 etc. percent so 64 is pretty close to 66 so I would consider it right.

4 0

3 years ago

A motorboat takes 5 hours to travel 150 miles going upstream. The return trip takes 3 hours going downstream. What is the rate o

lys-0071 [83]

Answer:

The rate of the boat in still water is 40 miles per hour

The rate of the current is 10 miles per hour

Step-by-step explanation:

we know that

The speed or rate is equal to divide the distance by the time

Let

x ----> the rate of the current (miles per hour)

y ----> the rate of the boat in still water (miles per hour)

we have that

going upstream

$y-x=\frac{150}{5}$

$y-x=30$ ----> equation A

going downstream

$y+x=\frac{150}{3}$

$y+x=50$ ----> equation B

Solve the system of equations by elimination

Adds equation A and equation B

$y-x=30\\y+x=50\\------\\y+y=30+50\\2y=80\\y=40$

Find the value of x

$y+x=50$

$40+x=50$

$x=10$

therefore

The rate of the boat in still water is 40 miles per hour

The rate of the current is 10 miles per hour

8 0

2 years ago

Tim and Tom are painters. Tim and Tom use a liters of paint on a large shipping crate. If the next crate they need to paint is s

antiseptic1488 [7]

This is the concept algebra.
Volume of of paint that is required to paint large shipping crate is a liters.
suppose the volume of this crate is x cubic units.
The volume of the next crate to be painted will be 2x cubic units.
Hence the amount of paint required to paint the crate will be:
(volume of bigger crate)/(volume of smaller crate)×(volume of liters required to paint the first crate)
=(2x)/(x)×a
=2a liters
To paint the new crate 2a liters of oil is needed.

5 0

3 years ago

Write a system of linear equations for the graph below.

sp2606 [1]

<h2>Answer:</h2>

We need to determine the equation of both lines first.