7th grade math help me please :).

Answer:

2.5 ⋅10^8

Step-by-step explanation:

Answer:?

Step-by-step explanation:

Answer:

Desmos Practice Worksheetdyh.astromirasole.it › desmos-practice-worksheet

Multiplying and Dividing Polynomials Worksheet Answer Key Poly Want a ... Desmos is a graphing calculator that can be accessed through any web ... Activity: Compound Inequalities on the Number Line

Answer:

formula 8.334

Step-by-step explanation: formula 8.334 so

Using the normal distribution, it is found that:

a) 4.75% of drivers have a reaction time greater than 1.8 seconds.

b) The reaction time is of at least 1.73 seconds.

In a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

In this problem, the mean and the standard deviation are given by, respectively:

[tex]\mu = 1.5, \sigma = 0.18[/tex]

Item a:

The proportion is one subtracted by the p-value of Z when X = 1.8, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{1.8 - 1.5}{0.18}[/tex]

[tex]Z = 1.67[/tex]

[tex]Z = 1.67[/tex] has a p-value of 0.9525.

1 - 0.9525 = 0.0475 = 4.75%.

4.75% of drivers have a reaction time greater than 1.8 seconds.

Item b:

The reaction time is of at least X seconds, in which X is the 90th percentile, that is, X when Z = 1.28, hence:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]1.28 = \frac{X - 1.5}{0.18}[/tex]

[tex]X - 1.5 = 1.28(0.18)[/tex]

[tex]X = 1.73[/tex]

The reaction time is of at least 1.73 seconds.

More can be learned about the normal distribution at https://brainly.com/question/24663213

Answer:

9000000 seven

There are 9000000 seven-digit numbers.

Step-by-step explanation:

please mark me brainliest

Answer:

9000000 seven

Step-by-step explanation:

There are 9000000 seven-digit numbers.

Answer provided by Education Point

Answer:

maybe 80 degrees and 100? might be wrong dont count on me fully

Step-by-step explanation:

Answer:

[tex]g(x) = 5x^2[/tex]

Step-by-step explanation:

In the equation x^2, when x = 1, y = 1. But in g(x), when x is 1, y is 5. Since g(x) is a scaled version of x^2, we can conclude that g(x) is 5 times x^2.

Therefore, [tex]g(x) = 5x^2[/tex].

I hope this helped you.

. . .Step-by-step explanation:

Answer:

  3 years

Step-by-step explanation:

As with many age problems, you can reason it without equations. If Tom is 13 now, 2 years ago he was 11. If the total age of the two cats at that time was 15, then Tim was 15 -11 = 4.

That means Tim is now 4+2 = 6, so will be 9 in 3 years.

_____

Additional comment

If you want to write equations, there are several ways you can do it. We often like to use variables to represent the current age. We can assign ...

  x = Tim's current age; y = Tom's current age.

The sum of their ages 2 years ago was ...

  (x -2) +(y -2) = 15

Tom's current age is 13, so we have y=13. Using that in the equation gives ...

  x -2 +13 -2 = 15

  x = 6 . . . . . . . . . . subtract 9, collect terms

That's Tim's current age, so Tim will be 9 years old in 3 years.

Answer:

All you need to do is split the shape so that you can find the individual area

Step-by-step explanation:

So we first split the shape so we get a triangle...

Now we split the shape again to get another square...

Then we find the area of the other square...

Our last step is to add all the areas together

Hence the area is 22

Answer:

h = 3/A

Step-by-step explanation:

A = 3h

Divide both sides by 3 to isolate h:

A/3 = 3h/3

Simplify and get

A/3 = h or h = A/3

Hope this helps!

Answer:

8=90,000,000,000

9=250,000,000,000

10=360,000,000,000

Answer:

5

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

5 repeats twice

Answer:

59

Step-by-step explanation:

A is a 90 degree angle, we can see the other side is 31

so we subtract 90-31=59

Answer:

B

Step-by-step explanation:

hope this helps

Answer:

A

Step-by-step explanation:

-2 is the least because the two lines means the number inside will be positive.

this means that -4/5 will be 4/5. Then 1. Then 3.5. Finally, 4.2

Hope this helps you

Answer: 4 goes into the box!!

Step-by-step explanation:

Answer:

yo add AlexGot_u on ps4

Step-by-step explanation:

Answer:

Its 60

Step-by-step explanation: 10x10=100 so 10x6=60

                                                Did that help you???

The area of one wall of the square room is 60 sq. feet.

The area of a square is the square of its side.

If the length of a side of a square is a unit, then its area is

Area = a² sq. units.

In the question, we are informed that a square room has a floor area of 100 sq. feet, and its height is 6 feet.

We are asked to find the area of one wall.

The floor of the room is given a square. We let the length of the side of that square be 'a' units.

Then, its area is a² sq. units.

We are given that the area of the floor is 100 sq. feet.

So, we can write the equation as:

a² = 100 sq. feet,

or, a = 10 feet.

The height of the room is given as 6 feet.

Therefore, the area of a wall is 10*6 sq. feet = 60 sq. feet.

As the floor is rectangular in shape, with dimensions 10 and 6.

Therefore, the area of one wall of the square room is 60 sq. feet.

Learn more about the area of a square at

https://brainly.com/question/26418430

#SPJ2

Answer:

1st Question is 22r4

2nd Question is 22r16

3rd Question is 11r11

4th Question is 11r30

Step-by-step explanation:

Hope this helps. I'll give you my energy.

Answer:

See attached graph

Step-by-step explanation:

[tex]f(x)=\frac{1}{x}\\ \\g(x)=x+4\\\\(g\circ f)(x)=g(f(x))=g(\frac{1}{x})=\frac{1}{x}+4[/tex]

I cannot see all of the options, so I attached a graph of the correct graph for you to match up your options with.

Answer:

Step-by-step explanation:

let us use the part to whole approach

given the ratio= 2:9

the total ratio= 2+9=11

the total trees planted=27

using the part to whole, the oak trees planted is given as

let the number of oak trees be x

2/11=x/27

cross multiply we have

11x=27x2

11x=54

x=54/11

x= 4.90

approximately 5 tree

Answer: A 5

Step-by-step explanation:

Answer:

Likely

Step-by-step explanation:

The odds are in favor of it, but it hasn't been proven.

Answer: 500

Step-by-step explanation: it increases and decrease in a pattern so -900+600= 300-600= -100+600=500

Answer:

$1.36

Step-by-step explanation:

Answer: yee yee nation

Step-by-step explanation:

Answer:

C. 29

Step-by-step explanation:

The linear equation is given by y = 15x. A person earns $600 for working 40 hours

A linear equation is in the form:

y = mx + b

Where y, x are variables, m is the rate of change and b is the y intercept.

The line passes through (7, 105) and (8, 120), hence:

y - 105 = [(120 - 105)/(8-7)}(x - 7)

y = 15x

For 40 hours:

y = 15(40) = $600

if the person got a $50 bonus and also worked some hours, it would change the graph

Find out more on linear equation at: https://brainly.com/question/14323743

Answer:

26.47%

Step-by-step explanation:

Total individual =340

Individual who lease car=90

Now,

90 out of 340 people lease car.

Fraction of people leasing car=90/340 =9/34

Percent of people leasing car=fraction *100%

=9/34 *100%

=26.47%

Hello,

[tex]f(x)=x^3-4x^2-11x+30 \\\\f(0)=30[/tex]

so y-intercept is (0,30)

The product of the roots are -30 = 2 * 5 * -3, and the sum is 4 = 2 + 5 - 3 , so we can factorise

[tex]f(x)=x^3-4x^2-11x+30 \\\\f(x)=0 \\\\<=> x^3-4x^2-11x+30=(x+3)(x-2)(x-5)=0\\\\<=> x=-3 \ or \ x=2 \ or \ x=5[/tex]

x-intercepts are (-3,0) (2,0) and (5,0)

thanks

First off, you have to make 65 % into an actual number, which is 0.65 (every time you want to convert percentages into numbers, you have to divide that by 100)

Now

0.65 * 8700 = 5655

Answer:  5655