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VashaNatasha [74]
3 years ago
5

A student is given that point P(a, b) lies on the terminal ray of angle , which is between radians and 2 radians. The student us

es the steps below to find cos . Step 1 Find the quadrant in which P(a, b) lies: P(a, b) is in Quadrant IV. Step 2 Use the point and the Pythagorean theorem to determine the value of r: , but since r must be positive, . Step 3 Determine cos . , where a and b are positive. Which of the following explains whether the student is correct? The student made an error in step 3 because a is positive in Quadrant IV; therefore, . The student made an error in step 3 because . The student made an error in step 2 because r is negative in Quadrant IV; therefore, . The student made an error in step 2 because using the Pythagorean theorem gives .
Mathematics
2 answers:
Pavel [41]3 years ago
8 0

Answer:

Its A, I just did it

diamong [38]3 years ago
7 0

Answer: A

Step-by-step explanation: Just took the test on edg

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Emily purchased lemons for $600. She sold 3/4 of these at a loss of 20% and the remaining at a gain of 20%. How much percent doe
MAVERICK [17]

Answer:

10%

Step-by-step explanation:

Given: CP of lemon is $600.

           3/4 of lemon sold at 20% loss

           Remaining lemon at 20% gain.

Considering the quantity of lemon remain constant.

Cost price of 3/4 of lemon= \frac{3}{4} \times 600= \$450

As given, 3/4 of lemon sold at 20% loss.

∴ Selling price of \frac{3}{4}\ of\ lemon=  450- \frac{20}{100}\times 450

Selling price= 450- 90= \$ 360

Hence, selling price of 3/4 lemon is $360.

Now, the cost price of remaining lemon (1-\frac{3}{4} )= (\$ 600-\$ 450)

∴ The cost price of \frac{1}{4}\ lemon = \$ 150

As given, remaining \frac{1}{4} lemon\ sold\ at\ gain\ of\ 20\%

∴ Selling price of \frac{1}{4} \ lemon= (150\times \frac{20}{100}+150)

Selling price of \frac{1}{4} \ of\ lemon= (30+150)

Hence, selling price of 1/4 lemon is $180

Loss\profit percent= \frac{(SP-CP)}{CP} \times 100

∴ Loss\profit percent= \frac{60}{600} \times 100= 10\%

Hence, the loss percentage is 10%

8 0
3 years ago
I am doing Freshman Football and this is my first game I actually get to play. This is my first year and I am the return man. Wh
Misha Larkins [42]

Answer:

you should get off the team

Step-by-step explanation:

cuz you do not know what to do

5 0
3 years ago
Read 2 more answers
A company charger shipping fee that is 4.5% of the purchase price for all items it ships. What is the fe to ship an item that co
kenny6666 [7]

Answer:

This is an percentage change question, by any chance you have a maths textbook, look for units that contains the topic: Percentage Change. Now, let's get solving! :)

Step-by-step explanation:

Firstly, you must multiply 4.5% with 56. That is: shipping fees x purchase price

That gives ($) 2.52 (this is your answer)

No addition/totaling needed as the question asked ONLY for the shipping fees.

Stay safe and Merry Christmas! :)

3 0
3 years ago
Write an equation of a line containing a point (5, 5) and is perpendicular to
Sati [7]
Answer is D

Explain 729:33(-2)
8 0
3 years ago
Mr. Howe ate 1/3 of a pizza and then Mr. Kurt ate 1/8 of the same pizza. How
Nikolay [14]

12/24

Step One: We need to convert 1/3 and 1/8 so both have the same denominator, so we need to find the a number that is able to be multiply by 3 and 8 for the process.

Step Two: 1/3 x 8= 8/24 and 1/8x3= 3/24

Step Three: Add our new fractions: 3/24+8/24= 12/24

Step Four: Subtract 12 by 24: 24-12= 12; our answer is 12/24 or half the pizza was eaten

I hope I've help!

5 0
3 years ago
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