All categories

3 years ago

Help with this math homework

Mathematics

1 answer:

timama [110]3 years ago

3 0

Answer and Explanation

1. Males taking geometry

Explanation: Find 19% of 30 to find answer

2. B- Between 40-60 minutes

Explanation: Measure the difference between the intervals

3. B is correct.

Explanation: From the graph the actual heart rate=150=150

but calculated heart rate from best fit line=148=148

Difference between actual and calculated=150-148=2=150−148=2

You might be interested in

The final value of a painting after its initial value, m, increases by 2/5

Dennis_Churaev [7]

Your answer is D. 2/5m

This expression means 2/5 times the initial value (m).

3 0

3 years ago

I don’t understand how to do this

schepotkina [342]

Answer:

The solution is $x =0.$

Step-by-step explanation:

The equation

$\bold{(1).}\: sin(\dfrac{3\pi }{2} +x)+sin(\dfrac{3\pi }{2} +x) =-2$

can be rewritten as

$2* sin(\dfrac{3\pi }{2} +2) =-2$

and can be further simplified to

$sin(\dfrac{3\pi }{2}+x ) =-1$ .

Now, taking the inverse sine of both sides we get:

$sin^{-1}(sin(\dfrac{3\pi }{2} +x) =sin^{-1}(-1)$

$\bold{(2).}\: \dfrac{3\pi }{2} +2 =sin^{-1}(-1)$

The value of the right side on the interval $[0,2\pi)$ is

$sin^{-1}(-1) = \dfrac{3\pi}{2} \: \:( \text{or }270^o)$ ,

which makes the equation (2)

$\dfrac{3\pi }{2}+x =\dfrac{3\pi}{2}$

solving for $x$ gives

$\boxed{x = 0}$

which is our solution.

4 0

2 years ago

Lainey bought a set of 20 makers for $6 what is the cost of 1 marker? <br>

loris [4]

Answer:

0.30

Step-by-step explanation:

$6 Total

20 markers

6/20=0.30

0.3 per maker.

Cost of 1 marker is $0.30

6 0

2 years ago

Which of the following is the equation of a line perpendicular to the line

satela [25.4K]

I think it’s b because idk

6 0

3 years ago

Read 2 more answers

Find the measure of each interior angle of a regular 25 sided polygon

uranmaximum [27]

The formula for finding the total interior angle measure is:

180(n-2)

n is the number of sides.

180(25-2) = 4140

So each interior angle would be: 165.6

4140/25 = 165.6

Hope this helps :)

4 0

3 years ago