Mathematics High School

Find the error & explain why it is wrong: Megan wanted to solve this problem: given that sin 0=-divided2/2, and cos =divided3/2, find tan 0

What did she do wrong

Find The Error & Explain Why It Is Wrong: Megan Wanted To Solve This Problem: Given That Sin 0=-divided2/2,

Answers

Answer 1

Answer:

As seen on the picture, all the steps A to D are correct.

Step A. Identity is correctStep B. The fraction is correctStep C. Simplification is correctStep D. Solution is correct

Note:

It could be more simplified by adding a step and multiplying both the numerator and denominator by √3: [tex]\frac{-\sqrt{2} }{\sqrt{3} } = - \frac{\sqrt{6}}{3}[/tex]

Related Questions

NEED HELP ASAP!!!!!The perimeter of a ractangle is 176 ft. If the ratio of the length to the width is 9 : 2, what is the length of each side?

(P = 2l + 2w)

Answers

P=2l+2w

l+w equals half of the perimeter

220/2=110

the ratio of the length to the width is 7:3

7x+3x=110

10x=110

x=11

7*11=77 for the length

3*11=33 for the width

A=l*w

A=77*33

A=2541 square inches for the area

maybe you are getting the formula mixed up ?!?!

What is the length of side c rounded to the nearest tenth of an inch?
17 in.
19 in.
С
The length of side c rounded to the nearest tenth of an inch is in.

Answers

Answer:

Step-by-step explanation:

This is a right triangle, and side c, our unknown, is the hypotenuse, the longest side in a right triangle. Using Pythagorean's Theorem, we have

[tex]17^2+19^2=c^2[/tex] which simplifies to

[tex]289+361=c^2[/tex] and

[tex]650=c^2[/tex] and

c = 25.5"

Francis is buying a new coffee table that is 45% off. The original price of the coffee table was $166. Which option gives the best estimate for the price after the discount?
A.$70
B.$85
C.$120
D.$100

Answers

about $92 so d) $100 is the best estimate

Answer: D

Step-by-step explanation:

Find the equation of the circle whose center and radius are given.

center ( 7, -3), radius = 7

Answers

Answer:

(x-7)^2 + (y+3)^2 = 49

Step-by-step explanation:

The general equation for a circle is given by

(x-h)^2 + (y-k)^2 = r^2

where ( h,k) is the center and r is the radius

(x-7)^2 + (y- -3)^2 = 7^2

(x-7)^2 + (y+3)^2 = 7^2

(x-7)^2 + (y+3)^2 = 49

Answer;

(x-7)^2 + (y+3)^2 = 49

Step-by-step explanation:

The general equation for a circle is given by

(x-h)^2 + (y-k)^2 = r^2

where ( h,k) is the center and r is the radius

(x-7)^2 + (y- -3)^2 = 7^2

(x-7)^2 + (y+3)^2 = 7^2

(x-7)^2 + (y+3)^2 = 49

(Help!) I need somebody (Help!) Not just anybody (Help!) You know I need someone (Help!). Algebra question :)

Answers

Step-by-step explanation:

meetcome on (Help!) You know I need someone (Help!). Algebra question :)

Answer:

the 1st, 3rd, 6th and last one

Step-by-step explanation:

just use square roots

Emily is buying new cold-weather gear for her family. She pays $100 for 5 pairs of waterproof gloves that each cost the same amount. Four of the pairs of gloves are mittens. Which expression represents the total cost of the 4 pairs of mittens?​

Answers

5÷100=x

x=20

100-20=80

80= the total cost of the 4 pairs of mittens

5x=100
X=20
4x=80
This should be the expression

What is the solution to the equation. |x- 4| = 17?
A. x= -13 or x= 21
B. x= 21
c. x= -21 or x= 13
D. No solutions exist.

Answers

A, x=-13 or x=21.

-13 - 4 (-13+ -4) is equal to -17. Due to absolute value bars, it is now positive 17.

21-4 = 17
Answer: C. x = -21 or x = 13

Step-by-step explanation:

Which is a true statement based on the dot plots below?
10 20 30 40 50 60
10 20 30 40 50 60
Set A

Answers

Set a is less symmetric than set b

What does it mean to square a number? Provide an example to support your answer.

Answers

Answer:

When squaring a number it is essentially taking a number and multiplying it by itself. For example, 5^2 is 5×5 (=25).

What is 3^5 as a product of the same factor?

Answers

Answer:

9

Step-by-step explanation:

what is the best choice for value y?

Answers

Answer:The answer is second option

[tex] {x}^{10 - 3} \\ {x}^{7} [/tex]

The correct answer is the second opinion. Have a great day lovely’s

What is the length of a leg of a right triangle if the hypotenuse is 9 inches and the other leg is 8 inches.

Answers

Answer:

√17 or 4.12 inches

Step-by-step explanation:

√9²-8²=√81-64=√17 inches

or 4.12 inches

please help me out ill mark u brainlist

Answers

Answer:

a = 13

Step-by-step explanation:

Isolate the variables by dividing each side factors that do not contain the variable.

Which is the slope of the line that passes through the points (3,17) and (7,25)?

Answers

Answer:

The slope is 2.

Step-by-step explanation:

2 7. Which numbers in the set {2,3,4,5} are solution(s) to the inequality 16 - 3x > 5?

A. 2 only
B. 3 only
C. 2 and 3
D.3,4, and 5​

Answers

Djdhhzns DVD’s hdudjdbdbbd

NEED HELP PLEASE I NEED THE ANSWER

Answers

Answer:

Step-by-step explanation:

The 2 lines are y=2x+12 (slope of 2 y-intercept at 12) and y=26 (line at y=26).

intersection= (7,26)

help fast please !!!!

Answers

Answer:

C=13

Step-by-step explanation:

[tex]a^{2} +b^{2} =c^{2} \\\\5^{2} +12^{2} =c^{2}[/tex]

Part B Liam buys a pair of jeans that cost $29.99 and 5 shirts that each cost the same amount of money. He spends a total of $94.94. • Write an equation or inequality to represent the cost of each shirt that Liam buys. Define all variables used. • What is the cost of each shirt that Liam buys? Show your work.​

Answers

Given :

Liam buys a pair of jeans that cost $29.99 and 5 shirts that each cost the same amount of money.

He spends a total of $94.94.

Solution :

Let, cost of each shirt is $ x.

It is given that there are 5 shirt and each cost the same.

Also, the sum of 5 shirt and a pair of jeans is equal to $94.94 .

So,

[tex]29.99 + 5x = 94.94\\\\5x = 94.94 - 29.99\\\\x = \$ 12.99[/tex]

Therefore, the cost of each shirt that Liam buys is $12.99 .

Trigonometry is the study of____________

Answers

Answer:

relationships between side lengths and angles of triangles

Step-by-step explanation:

Answer:

Study of the angles and triangles

Step-by-step explanation:

Which of the following is the graph of the inequality y < 3x+ 1?
А
B
C
D
5
To (1.4)
(1.4)
(1.4)
5
(1.4)
(0.1)
(0.1)
€ (0, 1)
(0, 1)
-6
5
A. Graph A
B. Graph B
C. Graph C
D. Graph D

Answers

D is the correct graph.
Testing (1, 4) which on the line. 4 = 3x1 + 1 is true so the line is solid.
Testing (0, 0) which is below the line. 0 = 3x0 + 1 is true so the origin must be in the shaded region.

Simplify the expression.

12−3 ∙ 1210 ∙ 120


A: 367


B: 1


C: 17287


D: 127

Answers

Answer:

-435588

Step-by-step explanation:

12−3 ∙ 1210 ∙ 120

Multiply first

12-435600

Then subtract

-435588

Answer:

12^7

Step-by-step explanation:

I got it right in grandpoint



A car salesman sold three hybrid cars last week. The cars come in red, white, and black. A sale is listed as RWB if a red car was sold first, a white

was sold second, and a black car was sold third.

A list of all possible outcomes is shown. Each outcome has equal probability.

{RRR, RRW, RRB, RWR, RWW, RWB, RBR, RBW, RBB, WWW, WWR, WWB, WRR,

WRB, WRW. WBR, WBB, WBW, BBB, BBR, BBW, BWR, BWW, BWB, BRW, BRR, BRB)

What is the probability that the cars sold last week included a white car or the first car sold was red?

Answers

Answer:

23 / 27

Step-by-step explanation:

Total possible outcomes :

{RRR, RRW, RRB, RWR, RWW, RWB, RBR, RBW, RBB, WWW, WWR, WWB, WRR, WRB, WRW. WBR, WBB, WBW, BBB, BBR, BBW, BWR, BWW, BWB, BRW, BRR, BRB) = 27

Required outcome : 23

{RRR, RRW, RRB, RWR, RWW, RWB, RBR, RBW, RBB, WWW, WWR, WWB, WRR, WRB, WRW. WBR, WBB, WBW, BBW, BWR, BWW, BWB, BRW) = 23

Required outcome / Total possible outcomes

= 23 / 27

Question 21 of 25
Which of the following is the coefficient in the algebraic expression 12x+ 24?
O A. 4
O B. x
C. 12
D. Z
SUBMIT

Answers

Answer:

12

Step-by-step explanation:

Coefficient is the number before the variable

WILL MARK BRAINLIEST PLEASE HELP ASAP !!!
Find the measure of the missing angles.

Answers

80 I believe hopefully it’s correct

Answer:

b=70 degree (by vertically opposite angle)

and c can be calculated as

b+c=180°

c=180°-b

c= 180°-70°

c= 110°

hence b=70° and c=110°

Please help ill make you the brainiest(please no link people)

Answers

the answer to this should be C

Math is hard -10/-10

Answers

Answer:

1 yup the answer is 1

HELPPPPPPPPPPP MEEEEEE

Answers

Answer:

Answer is D

Step-by-step explanation:

PLS HELP! WILL MARK BRAINLIEST!

Mr. Smith makes a pasta sauce
He mixes tomato concentrate: olive oil at a ratio of 3: 1

How many liters of tomato concentrate does he need to mix if he adds 3 liters of olive oil?

Answers

Answer:

9 litres of tomato concentrate

Find the measurement of the base.
3.5 in
Area = 12.6 in?

Answers

3.6 in i believe
12.6 divided by 3.5
= 12.6/3.5
= 3.6
3.6 x 3.5
= 12.6 =12.6

no links please!!!!!!!!!!!!!

Answers

x< -6 __________________

Answer:

Step-by-step explanation:

[tex]2 < -\frac{x}{3}[/tex]

To "undo" the division, multiply both sides of the inequality by 3.

[tex]6<-x[/tex]

To find  x, multiply both sides by -1, remembering that when you multiply (or divide) an inequality by a negative number, you have to switch the direction of the inequality sign (to avoid not telling the truth!!!).

[tex]-6>x[/tex]

Finally, it's a good idea to write the solution so the subject of the math sentence is x, not -6.

[tex]x<-6[/tex]

This isn't some kind of magic.  If -6 is bigger than  x,  then x  is smaller than -6.

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