What is the cosine of 90 degrees?

Answers

Answer 1

Answer:

The answer is 0.


Related Questions

According to a certain country’s department of education, 40.0% of 3-year-olds are enrolled in day care.

What is the probability that a randomly selected 3-year-old is enrolled in day care?

Answers

Given parameters:

Percentage of enrollment of 3-year-olds = 40%

Unknown:

Probability that a randomly selected 3-year-old is enrolled in a day care = ?

Probability is the likelihood of an event to occur.

   Probability  = [tex]\frac{Possible outcome}{Total out come}[/tex]

In this problem, 40% of the total number of 3-year-olds are enrolled in a day care.

  We can say, out of every 100 3-year-olds, 40 of them will enroll in day care.

The possible enrollment is 40 and the total is 100;

Input the parameters and solve;

      Probability  = [tex]\frac{40}{100}[/tex]   = [tex]\frac{2}{5}[/tex]

The probability that any randomly selected 3 year old is enrolled in day care is [tex]\frac{2}{5}[/tex]

Which property of addition is shown in the equation below?
a + bi + 0 + Oi = a + bi
A.commutative property
B.inverse property
C.identity property
D.associative property

Answers

C. Identity property

Order these numbers from least to greatest.

12/11

1.23

Square root of three

1

Answers

Answer:

1, 12/11, 1.23, square root of 3

Step-by-step explanation:

6200 divided by 163 i need the answer or ill fail

Answers

Answer:

38.04

Step-by-step explanation:

6200/163= 38.036809816

Since after the 3 is a 6 which is over 5 you can round the 3 up to a 4 and cut everything else off.

Hope this helps. Plz give brainliest.

6200 divided by 163 is equal to 38 with a remainder of 6.

We have,

The concept used to divide 6200 by 163 is a long division.

Long division is a method of dividing two numbers by repeatedly subtracting multiples of the divisor from the dividend until the remainder becomes smaller than the divisor.

It involves dividing digit by digit, starting from the leftmost digits of the dividend and moving towards the right.

Now,

To divide 6200 by 163, we perform a long division.

Here's how it works:

       38

  __________

163| 6200

      4890

      ______

      1310

      1304

      ______

         6

The quotient is 38, and the remainder is 6.

Therefore,

6200 divided by 163 is equal to 38 with a remainder of 6.

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10.The volume V of a given mass of gas varies inversely as the pressure P. When V =2m3 ,P=500 N/m2 .Find the volume when the pressure is 400N/m2 Find the pressure when the volume is 5 m3

Answers

Answer:

[tex]2.5\; \rm m^3[/tex].

Step-by-step explanation:

Let [tex]V_1[/tex] and [tex]P_1[/tex] denote the volume and pressure of this gas before the change. Let [tex]V_2[/tex] and [tex]P_2[/tex]denote the pressure of this gas after the change.

The ratio between the volume of this gas before and after the change would thus be [tex]\displaystyle \frac{V_1}{V_2}[/tex].

The ratio between the pressure of this gas before and after this change would be [tex]\displaystyle \frac{P_1}{P_2}[/tex].

Because the volume of a given mass of (ideal) gas varies inversely with pressure, these two ratios should be reciprocal of each other. That is:

[tex]\displaystyle \frac{V_1}{V_2} = \frac{1}{\displaystyle \displaystyle \left(\frac{P_1}{P_2}\right)}[/tex].

In other words:

[tex]\displaystyle \frac{V_1}{V_2} = \frac{P_2}{P_1}[/tex].

Rearrange and solve for [tex]V_2[/tex], the volume of this gas after the change:

[tex]\displaystyle V_1 = V_2\cdot \left(\frac{P_2}{P_1}\right)[/tex].

[tex]V_2 = \displaystyle V_1 \cdot \left(\frac{P_1}{P_2}\right)[/tex].

From the question:

Volume of this gas before the change: [tex]V_1 = 2\; \rm m^3[/tex].Pressure of this gas before the change: [tex]P_1 = 500\; \rm N \cdot m^{-2}[/tex].Pressure of this gas after the change: [tex]P_2 = 400\; \rm N \cdot m^{-2}[/tex].

Solve for [tex]V_2[/tex]:

[tex]\begin{aligned} V_2 &= V_1 \cdot \left(\frac{P_1}{P_2}\right) \\ &= 2\; \rm m^3 \times \frac{500\; \rm N \cdot m^{-2}}{400\; \rm N \cdot m^{-2}} = 2.5\; \rm m^3\end{aligned}[/tex].

Paige bought a handbag for $49.75. Nevaeh spent 2.5 times more on her handbag, while Naomi spent 3.5 times more than Paige on her handbag. How much total money was spent on the three handbags?

Answers

Answer:

Total money: $348.26

Step-by-step explanation:

Paige: $49.75

Nevaeh: 2.5*$49.75

Naomi: 3.5*$49.75

2.5*49.75 = 124.38

3.5*49.75 = 174.13

(I rounded the cents up.)

124.38

174.13

+49.75

$348.26

Hope this helps!! Have an awesome day C:

the cost of the t shirts in dollars is given by the equation c=9.5t, where c is the total cost of the t-shirts and t is the number of t-shirts . If sanjay bought 14 t shirts , how much did he pay?

Answers

9514 1404 393

Answer:

  $133

Step-by-step explanation:

Put 14 where t is in the formula and do the arithmetic.

  c = -9.5×14

  c = 133 . . . . cost in dollars

Sanjay paid $133 for the 14 t-shirts he bought.

Mariel paid: $15, $13, $35, and $18. Which
number shows the change in the balance
her account?
A -$81
C $71
B -$71
D $81

Answers

Answer:

check it

Step-by-step explanation:

“Lucynell don’t even know what a hotel is,” the old woman muttered. “Listen here, Mr. Shiftlet,” she said, sliding forward in her chair, “you’d be getting a permanent house and a deep well and the most innocent girl in the world. You don’t need no money. Lemme tell you something: there ain’t any place in the world for a poor disabled friendless drifting man.”

The ugly words settled in Mr. Shiftlet’s head like a group of buzzards in the top of a tree.

—“The Life You Save May Be Your Own,”

Flannery O’Connor

Which two things are being compared in the last sentence?

800,000 rounded to the nearest hundred thousand what is the largest and smallest number

Answers

Answer:

Largest: 800,499

Smallest: 799,500

The required largest number is 8,00, 499 and the smallest number is 7,99, 500.

Given that,
800,000 rounded to the nearest hundred thousand.
To determined the largest and smallest number.

What is rounding of values?

The rounding of values is superseding a number with an inexact value that has a more ephemeral, more uncomplicated, or more direct representation.

Here,
Any number range -500 and + 499 to 8,00,000 will be the smallest and largest number that could be rounded to 8,00,000.

smallest number  = 8,00,000 - 500 = 7, 99, 500

largest number = 8,00,000 + 499 = 8,00,499

Thus, the required largest number is 8,00, 499 and the smallest number is 7,99, 500.

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WCA - GEOMETRY A-2021
Determining a Truth Value
Try
Determine the truth value of the given conditional statement.
Given: If 3 is an even number, then 5 + 3 = 8.
A true statement implies a true statement, so the conditional statement is true,
A true statement implies a false statement, so the conditional statement is true,
O A false statement implies a true statement, so the conditional statement is true,
O A false statement implies a true statement, so the conditional statement is false,

Answers

Quicke gfs yfm bro gg

One loop around the park is Three and three-fourths miles. How far did Alyssa run if she ran Two-thirds of the way around the loop?

Answers

Step-by-step explanation:

One loop= 3+3/4= 15/4 miles

Two-third of the loop= 2/3*(15/4)

= 5/2 = 2.5 miles

Hope it helps :)

Answer:

Hi There!

Your answer is:

Alyssa ran 2 and a half miles if she ran 2/3rds of the loop.

Step-by-step explanation:

1 loop= 3 & 3/4ths miles

WE NEED: 2/3rds of a loop

1 loop/ 3 = 3& 3/4ths miles /3

CHANGE MILES TO IMPROPER FRACTION!

1/3 loop = 15/4ths divided by 3

Multiply 15/4ths by the inverse of 3

15/4ths * 1/3 = 15/ 12

SIMPLIFY

1 & 3/12 or 1& 1/4

1/3loop = 1 & 1/4th mile

To get 2/3rds loop, multiply both sides by 2

2/3rds loop = 2 & 1/2 Miles

Hope this helps

The data set represents the number of miles Mary jogged each day for the past nine days.

6, 7, 5, 0, 6, 12, 8, 6, 9

What is the outlier of the data?

0
6
7
12

Answers

Answer:

0

Step-by-step explanation:

It is the only number that isn't positive

The outlier of the data that represents the miles jogged by Mary each day for the past nine days is 0.

What is the outlier?

An outlier is a number that is very different from other data in a data set. It is either very big or way smaller than the other numbers.  

The outlier is 0. This is because it was the largest differnt from the second smallest number.

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simplify (7x)*exponent 2*

Answers

(7x)^2 simplified is 49x^2 or 49 and x raised to the second power, since 7•7 is 49, and we dont know the value of x, your answer is 49x^2

Answer:

49 x^2

Step-by-step explanation:

Simplify the following:

(7 x)^2

Hint: | Distribute exponents over products in (7 x)^2.

Multiply each exponent in 7 x by 2:

7^2 x^2

Hint: | Evaluate 7^2.

7^2 = 49:

Answer:  49 x^2

What is the domain of the equation y = 2/5x - 4?

Answers

Answer:

domain= {x/x€R/x≠0}

Step-by-step explanation:

The domain of the equation y = 2/5x - 4 is all the real values of x.

What is function?

Function is a combination of different types of variable and constants in which for the different values of x the value of function y is unique.

The given equation is,

y = 2/5x - 4.

The graph of the given equation is given below.

Since, the domain of the function is all the values of x,

For the given function, the values of x varies from -∞ to +∞.

Implies that, the value of x is the real value.

Therefore, the domain of the given equation is all real values.

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can this expression be simplified anymore?

Answers

I believe not, but that does look about right.

Answer:

I believe is a true to become a good expression

the question is provided in the picture, giving 50 POINTS, mark BRAINLIEST

Answers

Answer:9/10

Step-by-step explanation:You find the square root for 81 and 100. Once you find the square root of 81 you get 9 and 10 for 100.You do this for all fractions.Hope this helps! :) I meant a smiley face

Answer:

[tex]\frac{9}{10}[/tex]  

I hope this helps!

If you were to measure a person once a year, every year, from the ages of ten to twenty-five, would your ordered pairs of age and helght represent a function? по O yes​

Answers

no they wouldn’t because height dosent work at a steady pace

A receipe calls for 3/8 cup of chocolate chips and 1 1/2 cups of walnuts. Tameka wants to double the recipe. How many cups of walnuts will she use

Answers

Answer:

3 cups

Step-by-step explanation:

1 1/2 + 1 1/2 = 3


At the beginning of July, Kim had a mass of 63 kg.
At the end of July, his mass was 61 kg.
Calculate the percentage loss in Kim's mass.​

Answers

Answer:

2%

Step-by-step explanation:

Please help been stuck on this for a hour

Answers

Answer:

1 mile every 57 seconds I belive

Step-by-step explanation:

The Parker family went to the carnival. When everyone was ready for lunch, Dad bought 4 drinks for $3.25 and 4 hot dog plates with chips for $8.00. He also used a coupon for $2.00 off the price of lunch. How much did Dad pay for lunch altogether?

Answers

The answer is $43.00.

Explanation: Dad bought 4 drinks that cost 3.25 = 13.
Dad bought 4 hot dogs with chips for $8.00 = $32.00
Plus 32.00 + 13.00 = $45.00 - $2.00= $43.00

*How far can a train travel in 45 minutes if it is traveling at 80 miles per hour.

Answers

Answer:

60 miles

Step-by-step explanation:

distance = speed x time

45 minutes = 0.75 hours

0.75 x 80 = 60

Solve the following system of equations.
(15 Points)
x + 3y = -5 & 5y - 10 = -20x

Answers

Answer:

( 1 ; -2 )

Step-by-step explanation:

x + 3y = -5..............1

5y - 10 = -20x........2

x = -5 - 3y..............3

5y - 10 = -20( -5 - 3y)

5y - 10 = 100 + 60y

-55y = 110

y = -2

x = 1

Anybody know the answer to this?

Answers

Answer:

[tex]12a^2-3a+\frac{33}{4}[/tex]

Step-by-step explanation:

feel free to put brainist

If AABC = ADEC,
ZB = 3x and ZE = 6x - 39

Answers

Answer:

x = 13

Step-by-step explanation:

3x = 6x - 39 solve for x

It takes 9 1/2 inches of string to make one bracelet. How many bracelets can be made if you only have 5 yards of string?

Answers

Answer:

18

Step-by-step explanation:

Which one is the correct answer ?

Answers

Answer:

Option B is the correct answer

Molly is planting the flowers using the proportional relationship of 18 pink flowers to 12 white flowers per row.

Find the ratio of pink flowers per white flower per row

Answers

Answer:

3 : 2.

Step-by-step explanation:

18 : 12     Divide both values by 6:

= 3 : 2.

Answer:

Step-by-step explanation:1.5

The triangles below are similar. Find DE. If necessary, round 2 decimal places.

Answers

We know that the 2 triangles are proportional and are similar so that means there must be a scale factor between the sides of the triangles. To find the D, we need to use the scale factor and multiply it by CD to find DE. The scale factor can be found by dividing 2 similar sides so: EF divided by DG is 5/1.25 which is 4. We can then multiply the scale factor which is 4 by CD so: 3.25 * 4 is 13. DE = 13

Answer:

9.75

We know that the 2 triangles are proportional and are similar so that means there must be a scale factor between the sides of the triangles.

Convergent or divergent?

Answers

Answer:

Convergent

Step-by-step explanation:

This is an alternating series where bn = 2n / eⁿ.  Apply the alternating series test:

lim(n→∞) bn

= lim(n→∞) (2n / eⁿ)

Use L'hopital's rule:

= lim(n→∞) (2 / eⁿ)

= 0

For n ≥ 1, the series is decreasing. 2(n+1) / eⁿ⁺¹ < 2n / eⁿ.

Therefore, the series converges.

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