Is this a parallelogram

Answer:

??????????????????? 3+1

Step-by-step explanation:

9514 1404 393

Answer:

  y = 1/2x^2 +x -15/2

Step-by-step explanation:

The vertex is the point where the graph reaches is extreme: (-1, -8). The y-intercept is (0, -7.5). The x-intercepts are (-5, 0) and (3, 0).

When the quadratic is written in the form ...

  y = x^2 +bx +c

the value of b is the opposite of the sum of the x-intercepts. The value of c is their product. These facts would give ...

  y = x^2 -(-5 +3)x +(-5)(3) = x^2 +2x -15

The constant in this equation is -15, which is the value y has when x=0. Our actual y-intercept is half that, so the graph we see is this equation scaled by a factor of 1/2:

  y = 1/2x^2 +x -15/2

_____

Alternate solution

You can start with the vertex form.

  y = a(x -h)^2 +k . . . . . . . vertical scale factor 'a' and vertex (h, k)

On the graph, the vertical scale factor is the vertical difference between the low point (vertex) and the point that is 1 unit right or left. Here, that is ...

  -7.5 - (-8) = 0.5 = a

We've already said the vertex is (h, k) = (-1, -8), so the vertex form equation is ...

  y = 0.5(x +1)^2 -8

We know the square of a binomial is (a+b)^2 = a^2 +2ab +b^2, so we have ...

  y = 0.5(x^2 +2x +1) -8

  y = 0.5x^2 +x +0.5 -8 . . . . . eliminate parentheses

  y = 0.5x^2 +x -7.5

Answer:

red

Step-by-step explanation: convert all of the fractions to have same denominator which would be 20 and see which is the smallest

Answer:

a) red

Step-by-step explanation:

make all denominators the same.

red= 3/20

yellow= 8/20

green= 5/20

purple= 4/20

Answer:

A), D), E), F).

Step-by-step explanation:

Answer:

X = 13

X = 70

Step-by-step explanation:

1. Since it is a right angle set the equation up as X +2 + 75 = 90.

X =13

2. Set up x - 20 + 40 = 90 since right triangles are 90 degrees

x = 70

Answer:

It is correct.

Step-by-step explanation:

Answer:

hope this helps you out :)

Answer:3.38

Step-by-step explanation:

Count, N: 5

Sum, Σx: 18

Mean, μ: 3.6

Variance, σ2:  11.44

Steps

(10 - 3.6)2 + ... + (2 - 3.6)2

5

=  

57.2

5

=  11.44

σ =  √11.44

=  3.38

Are we supposed to answer something?

Also Woww! :00

Answer: 5 times

Step-by-step explanation:

Let the number of times that he saved $75 be x.

Let the number of times that he saved $150 be y.

Therefore, based on the information given in the question, we can form an equation which will be:

x + y = 8 ...... i

75x + 150y = 825 ....... ii

From equation I,

x + y = 8

y = 8 - x....... iiii

Put equation iii into ii and this will be:

75x + 150y = 825

75x + 150(8 - x) = 825

75x + 1200 - 150x = 825

75x - 150x = 825 - 1200

-75x = -375

x = 375/75

x = 5

He saved $75 5times from his paycheck.

Answer:

106.25

Step-by-step explanation:

125x.15 (15% discount)=18.75 discount

125-18.75=106.25

Answer:

the asnwer is 1/4

Step-by-step explanation:

4 quarts equal to 1 gallon and 4-3=1 so it should be 1/4

Answer: b=4

Step-by-step explanation: 4b+5=1+5b = B = 4

Answer:

b = 4

Step-by-step explanation:

subtract 4b from 5b and you get 1b. subtract 1 from 5 and u get 4 = 1b. divide both sides by 1 therefore b = 4

Answer:

Black and pink!! :D

Mostly pink though :3

Answer:

A.To convert counts into relative frequencies, divide the count by the total number of items. In the above table, the first count is for men / Rom-com (count=6), so 6/60 = 0.1. Like the two-way frequency table, the totals in the right column and bottom row are called marginal distributions.

B.The sum of the relative frequency column is 2020, or 1.

The last entry of the cumulative relative frequency column is one, indicating that one hundred percent of the data has been accumulated.

C.(i cant find it)

D.also cant find

E. sorry cant find

F.same with this one

Step-by-step explanation:

Sorry i got the first 2 tho

Answer:

Part A

Find the relative frequencies by rows.

                       Male   Female    Total

      American|| 11     ||    6        ||  17

Non-American|| 9    ||   14        ||  23

________________________________

Part B

Find the relative frequencies by columns.

                        Male    Female

American       || 11      || 6

Not American||   9    || 14

Total               ||  20  || 20

________________________

Part C

Of the male golfers, do the top golfers tend to be American? Why or why not?

Answer: Yes, the top golfers tend to be American because in the charts there are more American men than non-American men.

Part D

Of the female golfers, do the top golfers tend to be American? Why or why not?

Answer: The top golfers of the females don't tend to be American because in the charts there are more non-American women than American women.

Part E

Of the Americans, are the male golfers or the female golfers more likely to be highly ranked?

Answer: The American male golfers are more likely to be highly ranked.

Part F

Of the non-Americans, are the male golfers or the female golfers more likely to be highly ranked?

Answer: Of the non-Americans, the female golfers are more likely to be highly ranked.

Step-by-step explanation:

Hope this helps anyone who needs it. Goodluck on anything else!

Answer:

(First of all its 20 points not 40 but any ways) A ferris wheel has a raidus of 20 m. Passengers get on halfway up on the right side. The direction of rotation is counter clockwise. The bottom of the ferris wheel is 2 m above ground. It rotates every 36 seconds. Determine height above the ground after 15 seconds algebraically. Determine seconds to the nearest tenth when height is 38 m above the ground algebraically.

**

let t=seconds after wheel starts to rotate.

let h=meters above ground after wheel starts to rotate

..

The formula I got: h(t)=20sin(πt/18)+22

This is close to the formula you got, except I left the negative sign out since passengers start to rise after the wheel starts going counter-clockwise.

..

After 15 seconds:

h=20sin(15π/18)+22

=20sin(5π/6)+22

=20*(1/2)+22

=32 m

..

When h=38 m

38=20sin(πt/18)+22

38-22=20sin(πt/18)

20sin(πt/18)=16

sin(πt/18)=16/20=4/5=.8

arcsin(.8)=0.927

πt/18=0.927 (radians)

t=(.927*18)/π≈5.31

..

height above the ground after 15 seconds≈38 m

seconds elapsed when height is 38 m above ground≈5.3 seconds

Answer:

3x+5y+22

Step-by-step explanation:

Answer:

3x + 5y + 22

Step-by-step explanation:

Given expression:- x + 3y + 2x + 10 + 2y + 12

Here, you can add all the 'x' terms together and 'y' terms together.

There is an 'x' and '2x'.

On adding them, you get 2x + x equals 3x.

Then add the 'y' terms

There is a '3y' and a '2y'. On adding them, you get 3y + 2y equals 5y.

Then add the numbers that are left. 12 and 10.

12 + 10 equals 22.

Then take all the values we got after addition:- 3x, 5y and 22.

2x, 5y and 22 cannot be added together. So, the expression in the simplified form would be:-

The answer will be 100.48

If we take π = 3.14.

Answer:

caste system, they were commonly used to show the groups of people in their social hierarchies

Answer:

20

Step-by-step explanation:

20

Answer:

[tex]180 - 35 - 72 = 73[/tex]

Answer:A

Step-by-step explanation:

Answer:

[tex] \frac{2}{9} = \frac{9}{2} [/tex]

[tex] \frac{ - 7}{6} = \frac{ 6}{ - 7} [/tex]

[tex] \frac{8}{3} = \frac{3}{8} [/tex]

Answer:

3.70 < 3.702 < 3 10/11 < 79/20

Step-by-step explanation:

Answer:

approximately 1/4 mile

Andrew runs around a circular track each morning. The diameter of the track is approximately 1/4 mil

Answer: 1/4

Step-by-step explanation:

Answer:

(9+13)/2*10

=22/2*10

=11*10

=110

Step-by-step explanation:

First, we figure out the formula for areas of trapezoids is (a+b)/2*h.

Next, we plug in the numbers which will give use the equation:

22/2*10

Lastly, we solve:

11*10=110

Answer:

B

Step-by-step explanation: