Which of the following is equal to 1/2 or -1/2? Check all that apply.
sin(7pi/6)
Sin(4pi/3)
Cos(5pi/3)
Cos(pi/6)
Cos(5pi/6)
Sin(5pi/6)

Answers

Answer 1

Answer: ITS A, C, F

Step-by-step explanation:

I JUST DID IT ON EDG 2020

Answer 2

Answer:

A

C

F

Step-by-step explanation:


Related Questions

What is the value of the rational expression below when xis equal to 4?

Answers

Answer:

answer = 2

The Eighteenth Amendment empowered Congress to enforce the Amendment through legislation;

Step-by-step explanation:

The Eighteenth Amendment empowered Congress to enforce the Amendment through legislation;The Eighteenth Amendment empowered Congress to enforce the Amendment through legislation;The Eighteenth Amendment empowered Congress to enforce the Amendment through legislation;The Eighteenth Amendment empowered Congress to enforce the Amendment through legislation;

The Eighteenth Amendment empowered Congress to enforce the Amendment through legislation;

The Eighteenth Amendment empowered Congress to enforce the Amendment through legislation;

PLEASE HELP ME

Answer:

4

Step-by-step explanation:

What is the range of the function f(x) = 2x+3

Answers

Answer: (-∞,∞)

Step-by-step explanation: The line extends forever in both directions meaning that the endpoints will be negative infinity and infinity.

Who ever answers this I will mark as brainliest

Answers

Answer: uhhhhhh pass

Step-by-step explanation:

what is 431x18 estameted? please help fast

Answers

Answer:

7758 :)

Step-by-step explanation:

Answer:

9000

Step-by-step explanation:

If someone helps, contact me, and I'll give you 80 points or more if you would like.
Determine which statement is true from the information given. diet sodas = 3 regular sodas = 7

For every 3 regular sodas sold there are 7 diet sodas sold
The ratio of diet sodas to regular sodas sold is 7 : 3
The ratio of regular sodas to diet sodas sold is 7 : 3
For every 7 diet sodas sold there are 3 regular sodas sold

Answers

Answer:

Step-by-step explanation:

d = 3, r = 7

3r = 7d    3(7) = 7(3)    21 = 21    true

d/r = 7/3    3/7 ≠ 7/3    false

r/d = 7/3    7/3 = 7/3    true

7d = 3r    7(3) = 3(7)    21 = 21    true

3 of these statements are true, are you sure you got the question written down correctly?

If two angles are complementary, then they are equal to eachother.

Is this true, sometimes true, or false?

Answers

Answer: Sometimes true

Step-by-step explanation: Complementary angles are when two angles add up to 90 degrees. This will be true if the angles are both 45 and 45, however, some can be different like 50 and 40.

Answer:

Sometimes true if both angles are 45 degrees

Step-by-step explanation:



What was Bear B's average speed in
m/min? No units required for answer.

Answers

Given:

Graph of positions of Bear A and Bear B.

To find:

The average speed of Bear B in m/min.

Solution:

From the graph it is clear that initial point of graph of Bear B is (0,100) and the end point is (60,2800).

The average speed of Bear B is

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

[tex]m=\dfrac{2800-100}{60-0}[/tex]

[tex]m=\dfrac{2700}{60}[/tex]

[tex]m=45[/tex]

Therefore, the average speed of Bear B is 45 m/min.

The perimeter of a rectangular garden is 40 it. The length is 2 ft more than the width. Find the length and the width of the garden.

Answers

Answer: Length = 11

              Width = 9

Step-by-step explanation:

Let x represent the unknown length.

Let x - 2 represent the unknown width.

The perimeter is equal to 2 times x + (x -2)

Equation:

2 (x + (x - 2)) = 40

x + (x - 2) = 40/2

x + x - 2 = 20

2x - 2 = 20

2x -2 + 2 = 20 + 2

The length is: 2x = 22 -> x = 22/2 -> x = 11

The width is: x - 2 = 9

A national standard requires that public bridges over feet in length must be inspected and rated every 2 years. The rating scale ranges from 0​ (poorest rating) to 9​ (highest rating). A group of engineers used a probabilistic model to forecast the inspection ratings of all major bridges in a city. For the year​ 2020, the engineers forecast that ​% of all major bridges in that city will have ratings of 4 or below. Complete parts a and b. a. Use the forecast to find the probability that in a random sample of major bridges in the​ city, at least 3 will have an inspection rating of 4 or below in 2020. ​P(x​3) nothing ​(Round to five decimal places as​ needed.)

Answers

Answer:

The answer is below

Step-by-step explanation:

A national standard requires that public bridges over 20 feet in length must be inspected and rated every 2 years. The rating scale ranges from 0​ (poorest rating) to 9​ (highest rating). A group of engineers used a probabilistic model to forecast the inspection ratings of all major bridges in a city. For the year​ 2020, the engineers forecast that 4​%of all major bridges in that city will have ratings of 4 or below.

a. Use the forecast to find the probability that in a random sample of major bridges in the​ city, at least 3 will have an inspection rating of 4 or below in 2020.

Answer:

This problem is a probability binomial distribution and it can be solved using the formula:

[tex]P(X=x)=C(n,x)p^xq^{n-x}\\\\q=1-p,C(n,x)=\frac{n!}{x!(n-x)!}[/tex]

Hence the solution to the problem is given as:

P(x ≥ 3) = 1 - P(x < 3) = 1 - [ P(x=0) + P(x=1) + P(x = 2)]

Given that p = 4% = 0.04, q = 1 - p = 1 - 0.04 = 0.96, n = 10. Hence:

[tex]P(x=0)=C(10,0)*0.04^{0}*(0.96)^{10-0}=0.6648\\\\P(x=1)=C(10,1)*0.04^{1}*(0.96)^{10-1}=0.277\\\\P(x=2)=C(10,2)*0.04^{2}*(0.96)^{10-2}=0.0519\\\\P(x\geq 3)=1-[0.6648+0.277+0.0519]=0.0063[/tex]

6. In case of short
circuit............current will flow in
that circuit. *​

Answers

Answer:

As suggested in the name itself:

a short circuit makes the circuit 'short' which causes the resistance of the circuit to be close to none

When the resistance is decreased, the amount of current flowing in the circuit increases (ohm's law: R ∝ 1/ I)

Therefore, in case of a short-circuit. More current will flow in the circuit

PLEASE HELP!!! Mates spent $15.00 on protein bars and sports drinks. each bar cost $3.00 and each sports drink cost $1.50. which equation represents the number of protein bars, p, and the number of sports drinks, s, Matea could have bought

Answers

Answer:

15=3s+1.5p

Step-by-step explanation:

can i please get brainliest?

Answer:

15=3s+1.5p

Step-by-step explanation:

15(total money spent)

3s     s=amount of bars

1.5p    p= amount of sports drinks

The heart rates in beats per minute for runners who walk briskly on a treadmill for 6 minutes follow a Normal distribution with a mean of 104 and standard deviation of 12.5. What percent of the runners have heart rates above 140?

Answers

Answer:

0.2%

Step-by-step explanation:

We apply the z score formula.

This is given as:

Z score = x - μ/σ

x = Raw score = 140

μ = Population mean = 104

σ = Standard deviation = 12.5

z = 140 - 104/12.5

z = 2.88

Probability value from Z-Table:

P(x<140) = 0.99801

P(x>140) = 1 - P(x<140)

= 1 - 0.99801

= 0.0019884

Approximately = 0.0020

Converting to percent = 0.2%

Therefore, percent of the runners have heart rates above 140 is 0.2%

Mr. Ortiz is a driving instructor. Of his students, 23 have taken the driver's test and 17 of them have passed
on the first attempt. Mr. Ortiz earns a $300 bonus if 80% of his students pass the test on the first attempt.
How many consecutive students must pass on the first attempt in order for Mr. Ortiz to earn the bonus

Answers

Answer:7

Step-by-step explanation:

2% of what number is 5?
A. 0.1
B. 1
C. 250

Answers

Answer:

a

Step-by-step explanation:

5(.02)

A I’m pretty sure but not 100%

Red has already lost three iphones.He didn't spend a lot of money on his newest cellphone because he knows he will eventually lose that one too.Is it deductive or inductive reasoning?​

Answers

Answer:

deductive reasoning

Step-by-step explanation:

There are 16 squares and 20 triangles. What is the simplest ratio of squares to total shapes?

Answers

Answer:

1:6

Step-by-step explanation:

There are 20 triangles and four squares, so we know the first part of the ratio is 4. The total number of shapes is 24, so we get 4:24, and if we simplify, we then get 1:6.

Hope this helps!

There is a total of 16 squares, then the ratio of squares to total shapes is 4:9.

What is an arithmetic operation?

The four fundamental operations of arithmetic are addition, subtract, multiply, and division of two or more numbers. Included in them is the study of integers, especially the order of operations, which is important for all other aspects of mathematics, notably algebra, information management, and geometry.

As per the given information provided by the question is,

Total number of squares = 16

Total number of shapes = 16 + 20 = 36

Ratio between squares and total shapes,

= 16 : 36

= 4 : 9.

To know more about arithmetic operation:

https://brainly.com/question/13585407

#SPJ2

Compute the estimated regression's prediction for the average score of students given 98, 129, or 159 minutes to complete the exam.
Given 98 minutes, the estimated regression's prediction for the average score of students is 91.94 .
Given 129 minutes, the estimated regression's prediction for the average score of students is 108.37
Given 159 minutes, the estimated regression's prediction for the average score of students is 124.27 (Round your responses to two decimal places.)
Compute the estimated gain in score for a student who is given an additional 32 minutes on the exam.
The estimated gain in score for a student who is given an additional 32 minutes on the exam is (Round your response to two decimal places.)

Answers

Answer:

The estimated gain in score for a student who is given an additional 32 minutes on the exam is 16.96

Step-by-step explanation:

The estimated regression prediction is given by:

[tex]\hat{y}=40+0.53x[/tex]

Where x denotes the time

y denotes the average score

A)

Substitute x = 98

[tex]\hat{y}=40+0.53(98) = 91.94[/tex]

B)

Substitute x = 129

[tex]\hat{y}=40+0.53(129) = 108.37[/tex]

C)

Substitute x = 159

[tex]\hat{y}=40+0.53(159) = 124.27[/tex]

D)the estimated gain in score for a student who is given an additional 32 minutes on the exam.

[tex]\hat{y}=40+0.53(x+32)=40+0.53x+9.57=y+16.96[/tex]

So, the estimated gain in score for a student who is given an additional 32 minutes on the exam is 16.96

Which expression uses the associative property to make it easier to evaluate
14( 1/7• 2/5)

Answers

Step-by-step explanation:

Associative property is a(bc)=(ab)c

14(1/7 * 2/5) = (14* 1/7) 2/5 = 2* 2/5 = 4/5

Answer: (14 x 1/7) 2/5

Step-by-step explanation: yes.

HOW CAN WE SOLVE THIS 5-2+17=7 PLEASE HELP IAM CONFUSED
5X+17=7

Answers

Answer:

x = -2

Step-by-step explanation:

5X + 17 = 7

subtract 17 each side

5x + 17 - 17 = 7 - 17

divide 5 both sides

5x = -10  

simplify

5x/5 = -10/5

x = -2

I used 1/3 of a bottle of wax to wax 3/4 of a car. How many cars can I wax with one bottle? Please helppp

Answers

Answer:

2.25 cars are waxed with one bottle

Step-by-step explanation:

1/3 * 3 = 1

3/4 * 3 = 9/4

9/4 = 2.25

2 1/4

bc 3/4 divided by 1/3 equals 9/4 which turns into 2 and 1/4

1.why.do.we.need.election

Answers

To vote for a well suited president to help run for the United States
So we have a president

need help............​

Answers

Answer:

Answer=A

Step-by-step explanation:

(when dividing two powers we subtract the upper power by the bottom one)

[tex]\frac{7^{10} }{7^{3} }[/tex]

=[tex]7^{10-3}[/tex]

[tex]7^{7}[/tex]

Find the value of x.

Answers

Answer:

x=21

Step-by-step explanation:

180-126=54

54-12=42

42/2=21

x=21

This graph shows the solution to which inequality?
(3,-1)
(-3,-3)

Answers

Answer:

its c. y>1/3x-2

Step-by-step explanation:

Just took the quiz

Please help me now. I am stuck on this one.

Answers

Answer:

Step-by-step explanation:

Formula: Area=(a+b)/2 * h

72=(16+8)/2*h

72=24/2*h

72=12*h

h=72/12

h=6

It will be nice if you give me brainlies.Good luck!


Which of the following is the radical expression of?

Answers

Answer:

The third answer

Step-by-step explanation:

Remember power over root and the 2 would not be under the root.

Answer:

the third one

Step-by-step explanation:

How do we use the question as the example

Answers

Answer:

what question

Step-by-step explanation:

A group of 8 people are picking up litter along a 4
5
km length of road. Each person is assigned an equal section of the road. How can you divide 4
5
km among 8 people?


Which expression is equivalent to 4
5
÷ 8?
÷ 8
Each person picks up litter from a km length of the road.

Answers

Answer:

Each person picks up litter from a

✔ 1/10

km length of the road.

Which expression is equivalent to  4

5

 ÷ 8?

✔ 8/10

÷ 8

Step-by-step explanation:

A ball is dropped from a height of 100 cm. The rebound heights to the nearest centimeter are 60, 36, 22, .... What is the total distance the ball will travel both up an down?

Answers

Answer:

400 cm

Step-by-step explanation:

Given that:

Initial height at which ball was dropped = 100m

Rebound heights to the nearest cm = 60, 36, 22...

First we find the rebound percentage x;

x% * 100m = 60

100x % = 60

x = 60%

Hemce, we need to calculate the rebound velocities which aren't given:

0.6 * 22 = 13.2 = 13cm

0.6 * 13 = 7.8 = 8cm

0.6 * 8 = 4.8 = 5cm

0.6 * 5 = 3cm

0. 6 * 3 = 1.8 = 2 cm

0.6 * 2 = 1.2 = 1cm

The total distance the ball travels UP and DOWN :

(100 + 2(60) + 2(36) + 2(22) + 2(13) + 2(8) + 2(5) + 2(3) + 2(2) + 2(1))

= 400 cm

combine like terms to simplify

1.17 - .07a + (-3.92a)

Answers

Answer:

1.17+3.85

Step-by-step explanation:

1.17-(-3.85a)

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