Find the circumference use 3.14 for pie

Answer:

20 40 and 90 are correct

Step-by-step explanation:

Answer:

y=cotx

Step-by-step explanation:

Answer:

acute

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

Simple it would be 76x - 1 whatever that is, and 72x + 3 which u shuld get like uh 75x, and 75x again on both so its 75x

PLEASE DONT QUOTE ME ON THIS

Xoxo~May

Step-by-step explanation:

Answer:

The 95% confidence interval for the mean of gas mileage for this vehicle is (S - 1.53, S + 1.53), in which S is the mean of the sample of 20.

Step-by-step explanation:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.95}{2} = 0.025[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.025 = 0.975[/tex], so Z = 1.96.

Now, find the margin of error M as such

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

[tex]M = 1.96\frac{3.5}{\sqrt{20}} = 1.53[/tex]

The lower end of the interval is the sample mean subtracted by M. So it is S - 1.53.

The upper end of the interval is the sample mean added to M. So it is S + 1.53.

The 95% confidence interval for the mean of gas mileage for this vehicle is (S - 1.53, S + 1.53), in which S is the mean of the sample of 20.

Answer:

12.57

Step-by-step explanation:

2 π r d= 2 r

Solving for C

C= d = π 4 ≈12.56637

Answer:

a(3,1)

b(-1,-2)

c(-2,3)

Step-by-step explanation:

Answer:

Step-by-step explanation:

B?

Answer:

B

Step-by-step explanation:

Took the test

Answer:

B

Step-by-step explanation:

took the test

one over y squared multiply by t squared

Answer:

∠ U = 22.62°

Step-by-step explanation:

We can use the trigonometric expression to find ∠U by using the ratio:

sin(θ) = opposite/ hypotenuse

=> sin ∠U = 7.5/ 19.5

=> ∠ U = [tex]sin^{-1}[/tex]( 7.5/ 19.5)

∴ ∠ U = 22.619° ≈ 22.62°

Answer:

x=26

Step-by-step explanation:

first add the numbers

4x-8+34+76-x=180

4x+102-x=108

Then combine like terms

4x+102-x=180

3x+102=180

Subtract 102 from both sides of the equation

3x+102=108

3x+102-102=108-102

Simplify

3x=78

Divide both sides of the equation by the same term

3x=78

3x/3=78/3

simplify

cancel terms that are in both the numerator and denominator, divide the numbers

Solution

X=26

Answer:

14-6 = 8

14+6 = 20

14 x 2 = 28

14/2 = 7

2/14 = 1/7 = 0.14285714285

14^2 + 6 =  196 + 6 = 202

and so on..

Step-by-step explanation:

Answer: 3

Step-by-step explanation:

Answer:

Coordinates of point R = (6,5)

Step-by-step explanation:

Given;

Point A(2 , 1)

Q(-4 , -5)

m1:m2 = 3 : 2

Find:

Coordinates of point R

Computation:

X = [(m1)(x2) + (m2)(x1)] / (m1 + m2)

2 = [(3)(x2) + (2)(-4)] / (3 + 2)

2 = [3x2 - 8] / (5)

10 = [3x2 - 8]

3x2 = 18

x2 = 6

Y = [(m1)(y2) + (m2)(y1)] / (m1 + m2)

1 = [(3)(y2) + (2)(-5)] / (3 + 2)

1 = [3x2 - 10] / (5)

5 = [3x2 - 10]

3y2 = 15

y2 = 5

Coordinates of point R = (6,5)

Answer:

-0.75

Step-by-step explanation:

Because once we add the x coordinates (0+-3=-3) we multiply -3 times 1/4 which leaves us -0.75.

Answer:

x+y=28. 70x+140y=3360. 8 cats, 20 dogs were sold.

Step-by-step explanation:

hope it helps :)

Answer:

5*2+1/2*-2

11/2*-2

-11

Step-by-step explanation:

Answer:

10

Step-by-step explanation:

11/5÷(-½)

11/5×2/1

LCM of 11,1 is 11

So,

5×22/11

110/11

10

Answer:

5/4

Step-by-step explanation:

5 pounds, and if each of those has 1/4 of something then they would have 5/4 or 1.25 of that something

Answer:

see below

Step-by-step explanation:  5 20 21 02

There are 5 areas to calculate

Top  = LW          =  (20)(17)

Bottom  = LW    =  (20)(15)

Back  = LW        =  (20)(8)

2 Triangular Ends  = One square    = LW     =  (8)(15)

Total Surface Area = (20)(17) +  (20)(15) + (20)(8) +  (8)(15)

                  = (20)(17 + 15 + 8) +  (8)(15)

                  = (20)(40) + (8)(15)

                  =  800  +  120

                  =   920 ft²

Answer:

ok

Step-by-step explanation:

Answer:

(2q^2r+3s^2t)(4q^4r^2-6q^rs^2t+9s^4t^2)

Step-by-step explanation:

app said so... 0_0

Answer:

b

Step-by-step explanation:

Answer:

12.8

Step-by-step explanation:

Answer:

75

Step-by-step explanation:

Count By Two's

25=2 minutes

50=4 minutes

75=6 minutes

Answer:

x=1

Step-by-step explanation:

(7x-1)+(2x-1)=7

7x+2x-1-1=7

7x+2x=7+1+1

9x=9

9x/9 = 9/9

x=1

Answer:

y= 11

Step-by-step explanation:

y= √100 +1

y= 10 +1

y= 11

Answer:

x = 1

Step-by-step explanation:

y = x + 8

Output value = 9, means y = 9.

9 = x + 8

x + 8 = 9

Subtract 8 from both sides.

x = 1.

Answer:

For part 1- y=50x+75 For part 2- y=325

Step-by-step explanation:

the cost is increasing 50 for every hour

there is a flat rate of 75 to answer a house call

y=50x+75

y=50(5)+75

y=250+75

y=325

Answer:

(x + 3)² + (y - 4)² = 32

Step-by-step explanation:

Since we are given the coordinates of the centre and a point on the circle, we can use distance formula to find the radius.

r = √((1 - (-3))² + (8 - 4)²)

r = √(16 + 16)

r = √32

Now, formula for equation of a circle with centre (h, k) is;

(x - h)² + (y - k)² = r²

Our centre is (-3, 4) with r = √32

Thus;

(x - (-3))² + (y - 4)² = (√32)²

(x + 3)² + (y - 4)² = 32