Subtract the expression 5x-(-3x2+24)

Answer:

Mean:54

Step-by-step explanation:

Mean is the average number (total number of emails divided by how many days she sent them in)

Monday:28

Tuesday:46

Wednesday:52

Thursday:50

Friday:64

(28+46+52+50+64)/5

=270/5

=54

Answer:

48

Step-by-step explanation:

Monday- 28 emails

Tuesday-46 emails

Wednesday- 52 emails

Thursday-50 emails

Friday-64 emails

add them together- 240

240/5

The mean number of emails is 48

Answer:

Hence doubling the dimension gives a volume greater than doubling the original volume.

Step-by-step explanation:

Given The dimension :

Original dimension : 6 meters by 5 meters by 12 meters

Volume of original dimension :

6 * 5 * 12 = 360 m³

If dimension is doubled :

2 * 6 = 12

2 * 5 = 10

2 * 12 = 24

Volume = (12 * 10 * 24) = 2880 m³

2 * original volume = 2 * 360 = 720 m³

Hence doubling the dimension gives a volume greater than doubling the original volume.

Answer:

48

Step-by-step explanation:

60 = 5x

x = 12

12x4 = 48

Answer:

9e^5f^6

Step-by-step explanation:

Answer:

The penguin will walk 75.15 feet in 45 seconds. It will take the penguin 26.95 seconds to walk 45 feet

Step-by-step explanation:

hope it helps !

Answer: 75 feet

Step-by-step explanation:

Answer:

y + 2 = -9(x + 3) and y - 7 = 5(x + 1)

Step-by-step explanation:

[tex]\text{Point-Slope form is:}\\\\y-y_1=m(x-x_1)\\\\\text{m - slope}\\\\(x_1,y_1) \text{ - a point}[/tex]

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

[tex]\text{Options A and B are written in point-slope form.}\\\\\\y+2 =-9(x+3)\\\\\text{The slope is -9 and the point used is (-3, -2).}\\\\\\y-7=5(x+1)\\\\\text{The slope is 5 and the point used is (-1, 7).}[/tex]

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

[tex]\text{Option C is written in Standard Form.}\\\\Ax+By=C\\\\\\\text{Option D is written in Slope-Intercept Form.}\\\\y=mx+b\\\\\text {m - slope}\\\\\text{b - y-intercept}[/tex]

Hope this helps.

Given:

The height of the swipe card in feet after t seconds is

[tex]h(t)=-3t^2+15t+18[/tex]

To find:

The maximum height of the swipe card and the time at which it reaches this height.

Solution:

We have,

[tex]h(t)=-3t^2+15t+18[/tex]

Here, leading coefficient is -3, which is negative. It means it is a downward parabola and the vertex of the downward parabola is the point of maximum.

If a quadratic function is [tex]f(x)=ax^2+bx+c[/tex], then the vertex is

[tex]Vertex=\left(-\dfrac{b}{2a},f(-\dfrac{b}{2a})\right)[/tex]

In the given function, we get

[tex]a=-3,b=15,c=18[/tex]

Now,

[tex]-\dfrac{b}{2a}=-\dfrac{15}{2(-3)}[/tex]

[tex]-\dfrac{b}{2a}=2.5[/tex]

Putting t=2.5 in the given function, we get

[tex]h(2.5)=-3(2.5)^2+15(2.5)+18[/tex]

[tex]h(2.5)=36.75[/tex]

So, the vertex of the given parabola is at (2.5,36.75).

Therefore, the maximum height of the swipe card is 36.75 feet and it reaches this height after 2.5 seconds.

Answer:

D

Step-by-step explanation:

Answer:

it is the 3rd one to the bottem

o.7 - 0.31 = 0.39

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Given

x - 3 = 2x + 14 ( subtract x from both sides )

- 3 = x + 14 ( subtract 14 from both sides )

- 17 = x → A

Answer:

D

Step-by-step explanation:

we collect like terms to remain with

x-2x =14+3

-x =17

divide both sides by -1 to remain with

X = 17

Answer:

12 hours.

Step-by-step explanation:

Answer: B= 8.8

Step-by-step explanation:

B/2 = 4.4

B/2 (2) = 4.4 (2)

B = 8.8

Answer:

c

Step-by-step explanation:

Answer:

The answer is: 1 43/48

~hope this answered your question correctly, have a gr8 day my friend!~

Step-by-step explanation:

Answer:

Step-by-step explanation:

First let's find the circle without the gray area. We would have:

[tex]\pi r^2=\pi 36^2=\pi1296[/tex]

Next let's find the area of the circle with the gray area. We would have:

[tex]\pi r^2=\pi50^2=\pi2500[/tex]

Now we subtract and get:

[tex](2500-1296)\pi=\boxed{1204\pi}[/tex]

HOPE THIS HELPS

Answer:

hit the square

Step-by-step explanation:

I'm pretty sure you have to hit the square and then that would be number two

Answer:

40%

Step-by-step explanation:

15+10 = 25

25 divided by 5 = 5

100 divided by 5 = 20

10 divided by 5 = 2

2*20 = 40

40% of the mix is raisins

Answer:

9x² - 6x - 63

Step-by-step explanation:

Use the FOIL method. FOIL stands for First, Outside, Inside, Last.

Multiply following the FOIL:

3x * 3x = 9x²

3x * -9 = -27x

7 * 3x = 21x

7 * -9 = -63

9x² - 27x + 21x - 63

Combine like terms.

9x² (-27x + 21x) - 63

9x² - 6x - 63

9x² - 6x - 63 is your answer.

~

Answer:

y = 4/3x + 6

Step-by-step explanation:

Answer:

4/48 simplified by 4 = 1/12

The probability is 1/12

.............

Answer:

2x+22=42

Step-by-step explanation:

2x+22-22=42-22. which is 2x=20 divide both sides with 2,therefore the answer is 10

Answer:

x ≤ - 2

Step-by-step explanation:

Given the inequality :

3x+5≤−1

Subtract 5 from both sides

3x + 5 - 5 ≤ - 1 - 5

3x ≤ - 6

Divide both sides by 3

3x/3 ≤ - 6/3

x ≤ - 2

Mr.Choe's error was that he changed the inequality sign. The inequality sign in this case does not need to be changed.

Answer:

Answer:

1/12 per bag

Step-by-step explanation:

A Fisherman spent his weekend working on his farmland

He had 1/6 of a bag of soil

He spreads it evenly among his 2 garden beds

Therefore the soil in each garden bed can be calculated as follows

= 1/6 ÷ 2

= 1/6 × 1/2

= 1/12 per bag