Craig washed 4/5 of the windows on a building, and
Martha washed 1/5 of them. How much greater was
Craig's fraction of the windows than Martha's?

Answer:

64 m, at time t = 4 sec

Step-by-step explanation:

We must maximize the function h = 32t – 4t^2.  One way in which to do this is to find the axis of symmetry, t = -b / [2a], and from that calculate the height:

a = -4, b = 32, c = 0

                                                                          -32

and therefore the axis of symmetry is t = ---------------- = 4

                                                                          2(-4)

The height, h, at time t = 4, is h(4) = 32(4) - 4(4)^2 = 64 m

The maximum height of the ball is 64 m, at time t = 4 sec

Step-by-step explanation:

The golf ball reaches its maximum vertical height when its vertical velocity h' becomes zero. Taking the derivative of h and setting it to zero, we get

h' = 32 - 8t = 0

which gives us t = 4 seconds. So after 4 seconds, the ball will reach its maximum height and its value is

h = 32(4) - 4(4)^2

= 128 - 64

= 64

Answer:

[tex]-\frac{1}{8}[/tex]

Step-by-step explanation:

Assuming you mean

(- 2)⁻³

- 0.125

[tex]-\frac{1}{8}[/tex]

Answer:

-8

Step-by-step explanation:

see image below:)

Step-by-step explanation:

14x + 4 = 39

14x= 39-4

14x=35

x= 35/14

Answer:

Step-by-step explanation:

Remark

The minus sign in front of the 2 means that the quadratic has a maximum.

The vertex is already written in vertex form.

y= - 2 (x - 4)^2 + 3

The vertex is (4,3). Notice that the sign on the 4 changes. What you are trying to do is find the maximum point. That occurs when the minus number is made to be 0, which occurs when x = 4. The maximum y value is 3 when that happens.

I have enclosed a graph to show you all the details. Notice the maximum is when I've said it was and the roots have also been calculated.

Answer:

x = 4 and y = -6

Step-by-step explanation:

Solve by elimination by multiplying the first equation by -2:

-8x - 6y = 4

8x + 3y = 14

Add them together and solve for y:

-3y = 18

y = -6

Plug in -6 as y into one of the equations and solve for x:

8x + 3y = 14

8x + 3(-6) = 14

8x - 18 = 14

8x = 32

x = 4

So, the solution is x = 4 and y = -6

Answer:

x = 4​

y = -6

Step-by-step explanation:

4x + 3y = -2

8x + 3y = 14​

Multiply the second equation by -1

4x + 3y = -2

-8x - 3y = -14

--------------------------

-4x       = -16

Divide by -4

-4x/-4 = -16/-4

x = 4​

4x+3y = -2

4*4 +3y = -2

16 +3y = -2

3y = -2-16

3y = -18

y = -6

Answer:

[tex]x=1\frac{2}{9} +1\frac{1}{9}y[/tex]

Step-by-step explanation:

x - 3y + 8x - 7y = 5 + 6

9x - 10y = 11

9x - 10y + 10y = 11 + 10y

9x = 11 + 10y

9x ÷ 9 = 11 + 10y ÷ 9

[tex]x=1\frac{2}{9} +1\frac{1}{9}y[/tex]

Answer:

x = -1

y = -2

Step-by-step explanation:

x - 3y = 5     ----------------(I)

8x - 7y = 6 ----------(II)

Multiply equation (I) by (-8) and then add the two equations

(I)*(-8)     -8x + 24y = -40

(II)           8x   - 7y   = 6    {Now add and x will be eliminated}

                       17y = -34     {Divide both sides by 17}

                           y = -34/17

y = -2

Plugin  y  =-2 in equation (I)

x - 3*(-2) = 5

x  + 6 = 5         {Subtract 6 from both sides}

     x = 5 - 6

x = - 1

two real solutions

b2-4ac>0

one real solutions and one imaginary solution

b2-4ac=0

no real solution

b2-4ac<0

a=7

b=3

c=8

(3)^2-4(7)(8)=-215 no real solution

Answer:

○ C. [tex]\displaystyle 74°[/tex]

Step-by-step explanation:

[tex]\displaystyle c^2 + b^2 - 2cb\:cos∠A = a^2[/tex]

In the EDGE formula of the Law of Cosines, whatever squared edge term is on the outside of the equivalence symbol, its angle measure is what you write next to the trigonometric function, if you understand the formula written above.

I am joyous to assist you at any time.

Answer:

6500

Step-by-step explanation:

y = 6500(0.875)^x

When bought x = 0

y = 6500(0.875)^0

A number raise to 0 equals 1

y = 6500 * 1

y = 6500

==============================================

Work Shown:

SA = 2*pi*r^2 + 2*pi*r*h

SA = 2*3.14*(4)^2 + 2*3.14*4*9

SA = 326.56

Notes:

Answer:

[tex]326.56cm {}^{2} [/tex]

Answer:

The ratio for this school is 12/186 which gives us 2/31. Just check which option has the same ratio and that will be your answer.

Step-by-step explanation:

Answer:

There is no other schools listed so I cant answer the question

Step-by-step explanation:

Answer: I would pick black socks too because there are 8 pair of black socks with 4 pairs of white socks and 8 is > greater than 4.

Okay, so...

If there are 8 black socks + 4 white socks, then it = 12 socks totall. the fract Would Be 8/12 but if you simplify it, its 4/6, if you simplify it one more time you final answer is.....

You will have a 2/3 chance of picking a black sock.

Answer:

10

Step-by-step explanation:

10 is the greatest common factor that you can divide into both 40 and 50.

Answer:

10

Step-by-step explanation:

Try and find the prime factorization of 40 and 50.

40=2*2*2*5

50=2*5*5

Multiply the prime  factors that are common to both numbers.

2*5=10

B: the relationship is proportional

Answer:

19,17,15,13

Step-by-step explanation:

25-6=19

25-8=17

25-10=15

25-12=13

Answer:

-2 3/4, -2, -1 1/2, -0.8, -1/3, 0.2

Step-by-step explanation:

The bigger the negitive, the smaller the number, it's the opposite for the positives

Answer:

#3: 4

#7: >

#8: =

#9: >

#10: <

Step-by-step explanation:

1 decimeter = 10 centimeters

1 meter = 10 decimeters

1 kilometer = 1,000 meters

Answer:

75°

Step-by-step explanation:

180°-105°=75°

Hope this helps! :)

Answer:

75 degrees.

Step-by-step explanation:

The sum of both angles is 180 degrees, they are supplementary. Therefore, subtracting the measurement of the first angle from 180 will give you your answer.

180 - 105 = 75

Answer:

See below.

Step-by-step explanation:

4.2 is 4 and 2 tenths.

4 is 40 tenths.

That means that 4.2 is 40 tenths plus 2 tenths, or 42 tenths.

First line: 4.2 / 6 = 42 tenths / 6

In the second line, we divide 42 tenths by 6. Since 42 divided by 6 = 7, then 42 tenths divided by 6 equals 7 tenths.

Second line: 4.2 / 6 = 7 tenths

In the third line, we write 7 tenths as a number. 7 tenths is the same as 0.7.

Third line: 4.2 / 6 = 0.7

Answer:

27 m

Step-by-step explanation:

We know that ABC = 42 degrees

and side length BC = 24m

tan42 = 24m/a

a = 24/tan42

a = 26.65m

round to nearest whole number

= 27 m

Answer:

12 or 16 m

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

All the other answers are the same worded differently except c.

The distance between 6 and -6 is 12 so that is not correct for the absolute value of -6

Answer:

If they would both work at the same speed they would each take 4 hours to complete the room. So in total they would work 8 hours. But because Carl can finish three hours before Jennifer 3 hours of the eight already got to Jennifer. Then we divide the resting 5 hours by the two and then we have:

Jennifer:

3+2,5=5,5

Carl:

2,5

( if I am right)

Answer:

2.4

6 divided by 2.5= 2.4

Step-by-step explanation:

Hope this is correct, if not feel free to let me know and I can fix it. I'm sorry in advance if it is incorrect.

Answer:

The answer is indeed 2.4:

Step-by-step explanation:

Answer:

I believe the answer is 1

Answer:

[tex]14 \: 26 \: 6.5[/tex]

14

26

6.5

Answer:

The correct answer is B

Hope this helps

Answer:

270 meters

just multiply by 10 and change metrics to scale here