Can someone please help me with math.

Answer:

Mean = 4

Step-by-step explanation:

Mean = (Sum of all numbers)/(How many numbers there are)

There are 3 numbers

Mean = (5 + 4.5 + 2.5)/3

Mean = 12/3

Mean = 4

Answer:

[tex] \frac{5 + 4.5 + 2.5}{3 } = \frac{5 + 7}{3} = \frac{12}{3} = 4[/tex]

Answer:

6log_4(x) - 4log_4(y)

Step-by-step explanation:

Linear functions have a constant rate. l, domain of all real numbers, and doesnt have a vertex

Answer:

Linear functions have a constant rate. l, domain of all real numbers, and doesn't have a vertex.

Step-by-step explanation:

linear functions are a straight line. domain numbers can be but not limited to: -999 or 999, positive and negative numbers are included but not those with π or √ do not count because they are not real numbers. It doesn't have a vertex because it is a straight line, so therefore there is no vertex.

Answer:

Gavin

Step-by-step explanation:

Gavin: 3600 words / 60 minutes = 60 wpm

Dan: 3850 words / 70 minutes = 55 wpm

Colin: 3500 words / 70 minutes = 50 wpm

Answer:

Cone: You need the radius and height of the cone.

Cylinder: You need the radius and height the cylinder.

Sphere: You only need the radius of the sphere.

Step-by-step explanation:

For a lot of object shapes height and radius play a large role, the sphere is an outlier because of it's for a lack of a better word, spherical shape.

Answer:

Without the math: 65 hours is 5 half-lives

13 hrs = 1/2

26 hrs = 1/4

39 hrs = 1/8

65 hrs = 1/32

(1/2)^5 = 1/32

400 mg / 32 = 12.5 mg   that is, after 5 half-lives

Answer:

Step-by-step explanation:

45 47

Answer: 1.65f

Step-by-step explanation:

Last year's admission fee = f

Percentage Increase in the admission fee = 65%

New admission fee will be the addition of last year's admission fee and the increase in the admission fee. This will be:

= f + (65% × f)

= f + (65/100 × f)

= f + (0.65 × f)

= f + 0.65f

= 1.65f

The new admission fee is 1.65f

Answer:

x = - 3

Step-by-step explanation:

The axis of symmetry is a vertical line passing through the vertex of the parabola with equation

x = c

where c is the value of the x- coordinates the line passes through

The line passes through (- 3, - 6), (- 3, 4 ) with x- coordinates - 3

Then equation of axis of symmetry is x = - 3

Answer:

Negative

Step-by-step explanation:

Hello There!

The points on the scatter plot show some sort of correlation as they are grouped closely enough to create a trend line ( a line drawn where most points are at. )

If you were to draw a line through the points, the line would have a negative slope as  most of the points go down from left to right indicating that the correlation is negative

Answer:

In(8x)=[In]8 + [In]x

Step-by-step explanation:

By product rule:

[tex]In(8x)=[In]8 + [In]x[/tex]

Answer:

(-2,-5)

Step-by-step explanation:

When we rotate a figure of 180 degrees about the origin either in the clockwise or counterclockwise direction, each point of the given figure has to be changed from (x, y) to (-x, -y)

Answer:

(-2 , -5)

Step-by-step explanation:

rotated 180 degrees clockwise around the origin: (x , y) -> (-x , -y)

The answer is 41

Step-by-step explanation:

To solve this we must use the formula a^2+b^2=c^2. if we substitute in the values we get 9^2+40^2=c^2. The first variable is 81, then the b variable is 1600. The hypotenuse is the c value. 81+1600 is 1681, now we must find the square root of 1681. The answer is 41. Tell me if I'm wrong :)

Answer:

What image? (9/ -0) Is 9 - 8 =1

Step-by-step explanation:

Answer:

you dont have the image of the graph.

Step-by-step explanation:

Answer:

x=32, x=0

Step-by-step explanation:

[tex](x-16)^2=256[/tex]

Take the square root of both sides

[tex]\sqrt{ (x-16)^2}=\±\sqrt{256}\\x-16=\±16[/tex]

x=16+16 or x=16-16

Therefore, x=32 or x=0

I hope this helps!

Answer:

x=32 and x=0

Step-by-step explanation:

Answer:

[tex] 426.96 \: {km}^{2} [/tex]

Step-by-step explanation:

Area of the shaded region = Area of triangle with base 40 km and height 27 km - Area of circle with radius (12/2) 6 km.

[tex] = \frac{1}{2} \times 40 \times 27 - 3.14 \times {(6)}^{2} \\ \\ = 20 \times 27 - 3.14 \times 36 \\ \\ = 540 - 113.04 \\ \\ = 426.96 \: {km}^{2} [/tex]

Answer:

The cost of the uber is a $6 flat rate plus $1.25 per mile.

Then if you take an uber for x miles, the cost will be:

c(x) = $1.25*x + $6

Now, in this case Kayla also wants to add a tip of $4, then the total cost will be:

c(x) = $1.25*x + $6 + $4  = $1.25*x + $10

And we have the restriction that Kalya can't spend more than $27.50

Then the cost must be equal or smaller than $27.50, we can write this as:

c(x) ≤ $27.50

$1.25*x + $10 ≤ $27.50

Whit the above equation we can find the maximum value of x if we isolate x in one side of the inequality.

$1.25*x + $10 ≤ $27.50

$1.25*x ≤ $27.50 - $10

$1.25*x ≤ $17.50

x ≤ ($17.50/$1.50)

x ≤ 11.67

So the maximum number of miles that she can travel on that uber is 11.67 miles, but in this cases we only work with whole numbers, so we should round it to the next whole number that meets the condition, which is 11.

x = 11

The maximum number of miles that she can travel on that uber is 11 miles.

Answer:

Her tip was $5.32.

Step-by-step explanation:

To find the tip amount, all you need to do is multiply 31.28 by 17% (0.17).

Good Luck!

Answer:

y=5.72

Step-by-step explanation:

Let's solve your equation step-by-step.

y−1.02=4.7

Step 1: Add 1.02 to both sides.

y−1.02+1.02=4.7+1.02

y=5.72

Answer: y=5.72

Step-by-step explanation:

4.7 plus 1.02 equals 5.72

5.72 minus 1.02 equals 4.7

Answer:

y= -5/4 x+3

Step-by-step explanation:

like I said plug it in

Answer:

D

Step-by-step explanation:

Two numbers are multiplied together.

5 * 2/3

When you take the log, you get

log(5) + log(2/3)

log 2/3 is raised to the x power.

log(5) + log(2/3)^x                    

The x is a power and it can be taken down and multiplied by log(2/3)

log(5) + x log(2/3)

Answer:

D. log(5) + x • log(2/3)

Step-by-step explanation:

Hope this helps

Answer

the answer is 21, hope this helps

Answer:

1. 7% change increase

2. 27%change decrease

3. 39% change decrease

4. 29% change increase

Step-by-step explanation:

I hope this is right

Answer:

Step-by-step explanation:

Answer:

x=2.16/x= -4.16

Step-by-step explanation:

you must use quadratic formula if the solved equation cannot be factorised

Answer:

Well if your on chrome book sign out and select add person and make your new email and password and you have a new account.

Step-by-step explanation:

Hope this helps and have a wonderful day!!!

Answer:

Account for what, brain ly

Step-by-step explanation:

step 1: Go to sign up

step 2: create a email

step 3: create password

Answer:

30%

Step-by-step explanation:

Since you paid 560 dollars for 8 nights, you can divide to see how much you pay one night. You pay 70 dollars per night. So 30% off from $100 is $70

Answer:

30 percent

Step-by-step explanation:

math

Answer:

9.304

Step-by-step explanation:

company wishes to estimate the mean monthly electric bill. If the standard

deviation is $400, how large a sample is required to estimate the mean electric bill to within $100

with 98% confidence?

Sample size, n = (Zcritical * σ) ÷ ME

σ = standard deviation ;

ME ≥ margin of error

α = 98% ; At 98% confidence level ;Zcritical = 2.326

n ≥ (2.326 * 400) / 100

n ≥ 930.4 / 100

n ≥ 9.304

n = 10