1. How long is 50% of 60 minutes? 2. How long is 10% of 60 minutes? 3. How long is 75% of 60 minutes?

Use the unit circle to find sin 90 degrees a. 1 c. -1 b. 0 d. Undefined Please select the best answer from the choices provided

Maksim231197 [3]

Answer:

sin of 90 is 1

Step-by-step explanation:

sin is the y axis coordinate and the coordinates of 90° on unit circle is (0,1)

3 0

3 years ago

due in 1-hour PLZ HELP!!! Samuel orders four DVDs from an online music store. Each DVD costs $9.37. He has a 25% discount code,

Likurg_2 [28]

Answer: 36.24

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Points A and B are separated by a lake. To find the distance between them, a surveyor locates a point C on land such than âˆ C

34kurt

Answer:

good luck

Step-by-step explanation:

5 0

3 years ago

Given that < DAB and < DCB are right angles and m < DBC = 42, what is the measure of CAB

zhenek [66]

Please consider the attached diagram.

We have been given that angle DAB and angle DCB are right angles. We are also told that measure of angle DBC is 42 degrees. We are asked to find the measure of arc CAB.

We can see that angle DBC is inscribed angle of arc DC, so measure of arc DC is two times the measure of angle DBC.

$\widehat{DC}=42^{\circ}\times 2=84^{\circ}$

We can also see that segment DB is diameter of given circle as inscribed angle of diameter is a right angle.

Since segment DB is diameter of given circle, so measure of arc DAB would be equal to half the measure of 360 degrees.

$\widehat{DAB}=\frac{360^{\circ}}{2}=180^{\circ}$

$\widehat{CAB}=\widehat{CD}+\widehat{DAB}$

$\widehat{CAB}=84^{\circ}+180^{\circ}$

$\widehat{CAB}=264^{\circ}$

Therefore, the measure of arc CAB is 264 degrees.

6 0

3 years ago

Marla scored 70% on her last unit exam in her statistics class. When Marla took the SAT exam, she scored at the 70th percentile

Lerok [7]

Answer:

The difference is that Marla's exam in her statistics class was graded by percent of correct answers, in her case 70%, while the SAT is graded into a curve, taking other students' grades also into account, and since she scored in the 70th percentile, Marla scored better than 70% of the students.

Step-by-step explanation:

Marla scored 70% on her last unit exam in her statistics class.

This means that in her statistics class, Marla got 70% of her test correct.

When Marla took the SAT exam, she scored at the 70th percentile in mathematics.

This means that on the SAT exam, graded on a curve, Marla scored better than 70% of the students.

Explain the difference in these two scores.

The difference is that Marla's exam in her statistics class was graded by percent of correct answers, in her case 70%, while the SAT is graded into a curve, taking other students' grades also into account, and since she scored in the 70th percentile, Marla scored better than 70% of the students.

3 0

3 years ago