Evaluate the following expression. cos315°

Answers

Answer 1

Answer:

[tex]\sqrt{2}/2[/tex]

Step-by-step explanation:

Making a unit circle will be very helpful if you don't already have one. You will use it for years to come.


Related Questions

PLEASE HURRY 20 POINTS
A fabric store sells each yard of fabric for x dollars. Which situation can be represented by this inequality? 10x<8x+5 The cost of 10 yards of fabric is greater than the cost of 8 yards of fabric plus a $5 pack of buttons. The cost of 10 yards of fabric is less than the cost of 8 yards of fabric plus a $5 pack of buttons. The cost of 10 yards of fabric is less than the cost of 8 yards of fabric with a $5-off coupon. The cost of 10 yards of fabric is $5 greater than the price of 8 yards of fabric.

Answers

Answer:

The answer is 10x<8x+5 The cost of 10 yards of fabric is greater than the cost of 8 yards of fabric plus a $5 pack of buttons.

Step-by-step explanation:

When you multiply the sum and and the difference of 10x and 8x you will get the answer up there. I have done this test before when I was in middle school.

Answer:

It's The cost of 10 yards of fabric is less than the cost of 8 yards of fabric plus a $5 pack of buttons.

Step-by-step explanation: I took the test

combining like terms with negative coefficients and distribution
-2(2x+4)?

Answers

Answer:

-4x - 8

Step-by-step explanation:

Step 1: Write out expression

-2(2x + 4)

Step 2: Distribute -2

-4x - 8

Solve for the equation for x 3x+y/=2

Answers

Answer: x= 2/3 - 1/3y


Explanation step by step:

Step 1: Move variable to the right hand side and change its sign.

3x = 2-y

Step 2: divide both sides of the equation by 3.

x= 2/3 - 1/3y

Solve for x. *
2 (x - 3) = 5x + 23

Answers

Answer:-29/3

Step-by-step explanation:

distribute the left side: 2x-6 = 5x+23

combine like terms: -3x=29

divide by -3 on both sides: x= -29/3

Janice already has 2 flowers in her garden, and she can also grow 4 flowers with every seed packet she uses. Write an equation that shows the relationship between the number of seed packets x and the total number of flowers y. Write your answer as an equation with y first, followed by an equals sign.

Answers

Answer:

y=4x+2

Step-by-step explanation:

4x represents that for every one seed, she will have 4 flowers, and 2 represents the the number of flowers she already has

P
-4x - 3y= -26
-5x+2y= -21
Find the solution to the system of equations shown above by graphing.
A. X= 5, y= 2
B. X= 5, y=3
C. X= 2, y = 5
D. x= 6, y= 2
PLEASE EXPLAIN!!!

Answers

The answer is A because if u graph it it would be right

2.
Factor the common factor out of each expression. Hint, divide the first one by -8.:
a. - 32x - 40
whats the first step

Answers

the first step is to divide both of the numbers by -8, so you would get 4x+5.

2k-3(2k-3)=45
step by step please?​

Answers

K=-9
Here’s the step by step solution

Answer:

k=-9

Step-by-step explanation:

[tex]2k-3(2k-3)=45\\\\2k-3(2k)-3(-3)=45\\\\2k-6k+9=45\\\\(2k-6k)+9=45\\\\(2-6)k+9=45\\\\-4k+9=45\\\\-4k+9-9=45-9\\\\-4k+0=36\\\\-4k=36\\\\\frac{-1}{4}(-4k) =\frac{-1}{4}(36) \\\\k=\frac{-36}{4} \\\\k=\frac{4*9}{4} \\\\k=\frac{9}{1} \\\\k=-9[/tex]

Find the coordinates of the vertex of g(x) = |x + 1| - 2.

A. (-2, -1)
B. (-2, 1)
C. (-1, -2)
D. (1, -2)

Answers

Answer:

The vertex will be at ( -1,-2)

Step-by-step explanation:

g(x) = |x + 1| - 2.

The vertex of g(x) = |x |  is ( 0,0)

y = f(x) + C C < 0 moves it down  

y = f(x + C) C > 0 moves it left

We shift this  to the left 1 unit and down 2 units

( 0 -1, 0-2)

The vertex will be at ( -1,-2)

Given: g(x) = |x + 1| - 2.

We start at g(x) = |x| at (0, 0)

c < 0 moves it down

y = f(x) + c

2 units down

c > 0 moves it left

y = f(x + c)

1 unit to the left

After the shift, we see the vertex being at (-1, -2).

Best of Luck!

Divide. Enter the quotient in simplest form.
-
6- +6-=
8 4
Can someone plz explain this.

Answers

its should be 0 if there negative or 12-

PLEASE HELP ALGEBRA 2!

Answers

Answer:

7 number ans is b because 2 times the sum of a and b means 2×(a+b)

Answer:

5.) Associative Property of Addition

6.)Commutative property of multiplication

7.) 2 ( a + b)

Step-by-step explanation:


this is integrated math2, i’m so lost idk what this is

Answers

Answer:

A. SAS

Step-by-step explanation:

[tex] In\:\triangle ABM \:\&\:\triangle CBM\\

\overline{AB} \cong \overline{CB}.... (given) \\

\angle ABM \cong \angle CBM....(given) \\

\overline{BM} \cong \overline{BM}.... (common) \\

\therefore \triangle ABM \:\cong\:\triangle CBM..... (SAS\: Postulate) [/tex]

Simplify 7N - 2N + 3P + 2P.

Answers

Answer:

5N+5P

Step-by-step explanation:

7N-2N=5N

3P+2P=5P

7n-2n=5n
3p+3p=6p
5n+6p

What is 28828+88+8+78282882728288+8+888+8882828888-8–88-89939x929299999299292929+839929828-0+9929299x91919192939939+929292992929999-9-9-9999299202839393=

Answers

Answer:

-8.2667628e+22

-Step-by-step explanation:

Find the coordinates of c

Answers

Answer:

Step-by-step explanation:

(x - 9)/2 = 4

x - 9 = 8

x = 17

(y - 5)/2 = 1

y - 5 = 2

y = 7

(17, 7) for coordinates of C

Write an equation of the line in slope-intercept from?

Answers

Answer:

[tex]y=-\frac{3}{2}x+2[/tex]

Step-by-step explanation:

This is for the first question.

Slope-intercept is:

[tex]y=mx+b[/tex]

m - slope

b - y-intercept

We are given the slope of [tex]-\frac{3}{2}[/tex] and a y-intercept of 2.

Plug in the values:

[tex]y=mx+b\rightarrow\boxed{y=-\frac{3}{2}x+2}[/tex]

Hope this helps.

Sean began jogging to live a healthier lifestyle. On his first run, he ran one-half mile. He increased his workouts by adding two miles a month to his run. He wrote the equation f(x)= 0.5 + 2x to model his progress. The variable x represents the number of

miles he runs.
months he runs.
miles he ran the first day.
calories he burns.

Answers

The variable x represent the number of months in which he runs.

Linear equation

A linear equation is in the form:

y = mx + b

where y, x are variables, m is the rate of change (slope) and b is the y intercept.

Given that Sean one-half mile on his first run and adds two miles a month to his run. It is given by the equation f(x)= 0.5 + 2x

The variable x represent the number of months in which he runs.

Find out more on Linear equation at: https://brainly.com/question/13763238

Lamar bought a 6-kilogram can of pistachios for $6.90. What is the unit price?
A $1.90
B) $1.30
C$1.10
D $1.15

Answers

Answer:

$1.15

Step-by-step explanation:

6.90/6=1.15

Which is correct from greatest to least

Answers

What’s the ?hfjejehhehehsjsjajs
what’s the question

The GCF of 24 and 32 is...

Answers

Answer:

The GCF is 8 there is your anwser

A submarine drops at a rate of 16 feet per minute. What is the submarines depth after 4 minutes?

Answers

Answer:

答えがわからない

Step-by-step explanation:

答えがわからない

Point A is at (1,5) and point C is at (-5, – 7).
Find the coordinates of point B on AC such that AC is 6 times as long as AB.

Answers

Answer:

(0,3)

Step-by-step explanation:

I did in Khan Academy and it was correct

Jenny makes food for her hummingbird feeders the food is made up of 1 part sugar and 4 parts water she uses 3-4 cup of sugar to make the hummingbird food how much water should Jenny use

Answers

Answer:if you want 3.5 cup of sugar then water would be 14 cups of water so yeah

Step-by-step explanation:               :|

A triangle has a base length of 3.1 cm and corresponding height of 4.2 cm, correct to
one decimal place. Calculate the upper and lower bounds for the area of the triangle as
accurately as possible.

Answers

Answer:

The upper bound of the area is 6.69375 cm²

The lower bound of the area is 6.32875 cm²

Step-by-step explanation:

The question relates to measurements and accuracy

The given information are;

The base length of the triangle = 3.1 cm

The height of the triangle = 4.2 cm correct to one decimal place

The lower bound for the base length of the triangle = 3.05 cm

The upper bound for the base length of the triangle = 3.15 cm

Similarly, the lower bound for the height of the triangle = 4.15 cm

The upper bound for the height of the triangle = 4.25 cm

The formula for calculating the area of a triangle is given by the following formula;

Area of a triangle = 1/2 × Base × Height

The upper bound of the area = 1/2 × The upper bound of the base × The upper bound of the height

The upper bound of the area = 1/2 × 3.15 × 4.25 = 6.69375 cm²

The upper bound of the area = 6.69375 cm²

The lower bound of the area = 1/2 × The lower bound of the base × The lower bound of the height

∴ The lower bound of the area = 1/2 × 3.05 × 4.15 = 6.32875 cm²

The lower bound of the area = 6.32875 cm²

What are corresponding points and sides?

Answers

Answer:

means opposite to it which is rut infront

Whats the answer : Evaluate 3/7 - 2/28

Answers

the answer ; 3/7-2/28 = 5/14

Which of the following is the solution to the inequality below? 14 - x)5-4x+ O A. X² B. X C. X 7 13 7 D. x2 13

a. x<_17/13

b x_>7/13

c. x<_7/13

d. x_>17/13

if you could help me that would be great :)​

Answers

[tex]-\frac{6}{5}(4 - x) \leq -4(x + \frac{1}{2} )[/tex]

Let's start off by distributing the [tex]-\frac{6}{5}[/tex] and -4

[tex]-\frac{24}{5} + \frac{6}{5}x \leq -4x - 2[/tex]

Add 4x and [tex]\frac{24}{5}[/tex] to both sides.

[tex]\frac{26}{5}x \leq \frac{14}{5}[/tex]

Divide both sides by [tex]\frac{26}{5}[/tex]

[tex]x\leq \frac{7}{13}[/tex]

This is a Precal question.

Express the given geometric statement about numbers on the number line algebraically, using absolute values.

x is more than 2 units from c​

Answers

Answer:

X= 4c The absolute value you can find witht the equation |4c|

A DESPRITE CRY FOR HELP!!!!

Answers

Answer:

43,51, 86

Step-by-step explanation:

The sum of the angles of a triangle are 180

x+ x+8+2x = 180

Combine like terms

4x+8 = 180

Subtract 8  from each side

4x+8-8= 180-8

4x= 172

Divide each side by 4

4x/4 = 172/4

x=43

x+8 = 43+8 = 51

2x = 43*2 = 86

I got you, bro!

Answer:

x = 43

The angle measures of the triangle, in order from least to greatest, are 43, 51, and 86.

Step-by-step explanation:

4x + 8 = 180

Subtract 8 from both sides.

4x = 172

Divide.

x = 43

11. In a class, the probability of being a boy is 5/6. If there are 36 girls in the class, how many total
students are in the room?

Answers

Answer:

66

Step-by-step explanation:

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