Can someone explain this? Are my answers for 2 and 4 good?

Answers

Answer 1

Answer:

I can't see that good enough

Related Questions

There are about 4,000,000 students attending school, kindergarten through Grade 12, in New York. The average number of students attending a middle school in New York is 8 x 10^2. Approximately how many times greater is the overall number of K–12 students compared to the average number of middle school students?

Question 1 options:

A. 200,000,000 times greater

B. 2,000,000 times greater

C. 50,000,000 times greater

D. 5,000 times greater

Answers

Answer:

Step-by-step explanation:

big number

Answer:

Step by step explanation:

08*10^2=800

4,000,000/800=5,000

If b = 3, then b ^-2 is equivalent to ... please help fast lol I’m in a test

Answers

Answer:1/9

Step-by-step explanation:

Choose the best units (liters - l) or (milliliters - ml) to measure each of the following liquids.

The amount of liquid that would fill a test tube
The amount of mouthwash that would fill a travel-sized container
The amount of coffee that would fill a thermos

Answers

The amount of liquid that would fill a test tube: milliliters (it is usually a small amount and used for precise measurements)

The amount of mouthwash that would fill a travel-sized container: milliliters (again, a small amount)

The amount of coffee that would fill a thermos: liters (a large amount, used for drinking)

1/8 to decimal and
10/11 to decimal

Answers

Answer:

Step-by-step explanation:

Answer: 1 divided by 8= 0.125

10 divided by 11= 0.90^

Step-by-step explanation:

your grocery bill before taxes was $265.24 you have to pay 7.3% sales tax how much is your total grocery bill

Answers

Answer:

301.57

Step-by-step explanation:

I think this is it. I divided the total before taxes by the percentage and added what I got from the division to the total before taxes.

Answer:

Step-by-step explanation:

A parking garage charges a 3.50$ base fee plus an hourly rate of 7.00$. If you have at most 21.50$ to pay for parking, how long can you park?

Answers

Answer:

You get a total of two hours of parking.

Step-by-step explanation:

First, you subtract the base fee of $3.50, which gives you $18.00. Then you subtract as many sevens there are in 18, which is two. And then your answer is shown, as two. Hope this helps!

Which relation is a function?

Answers

the one on the bottom right

Answer:

bottom right graph

Step-by-step explanation:

A rock is tossed vertically from a height of 2m with an initial velocity of 20 ms-1. The height of the rock, h, after t seconds can be modeled by the polynomial function :h(t)=−4.9t2+20t+2, t≥0. Calculate how many seconds, rounded to three significant figures, it takes for the rock to hit the ground.

Answers

Answer:

The rock takes 4.18 seconds to hit the ground

Step-by-step explanation:

Function Model

The height of a rock h, after t seconds, can be modeled by the polynomial function:

[tex]h(t)=-4.9t^2+20t+2, t\geq 0[/tex]

When the rock hits the ground, the height is 0, thus we need to find the value of t such as:

[tex]-4.9t^2+20t+2=0[/tex]

A quadratic equation can be expressed as:

[tex]at^2+bt+c=0[/tex]

where a,b, and c are constants.

Solving with the quadratic formula:

[tex]\displaystyle t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]

The values for the given equation are:

a=-4.9, b=20, c=2

Applying the formula:

[tex]\displaystyle t=\frac{-20\pm \sqrt{20^2-4(-4.9)(2)}}{2(-4.9)}[/tex]

[tex]\displaystyle t=\frac{-20\pm \sqrt{400+39.2}}{-9.8}[/tex]

[tex]\displaystyle t=\frac{-20\pm 20.957}{-9.8}[/tex]

There are two possible solutions:

[tex]\displaystyle t=\frac{-20- 20.957}{-9.8}=4.18[/tex]

[tex]\displaystyle t=\frac{-20+ 20.957}{-9.8}=-0.1[/tex]

Since t > 0, the only solution is t=4.19 seconds

The rock takes 4.18 seconds to hit the ground

The double number line shows that 4 bottled of water cost 20 dollars at a music

Answers

it should be the answer eighty

3х – 10 y = 14 3х - 9y = 15

Answers

Answer:

{x,y}={8,1}Step-by-step explanation: i just looked it up

Your family needs a set of 4 tires. Which of the following deals would you prefer? Complete the explanation below to tell which deal(s) would be better.

(I) Buy 2, get two free (II) 45% off (III) 1/2off
The best deal would be either .
Either case would result in a discount of %,
which is better than the other alternative of %.
PLZ ANSWER ASAP!

Answers

Answer

Buy 2, get 2 free and/or 1/2 off

Step-by-step explanation:

OK, lets say that the tire price was 15. (l)= 15+15=30 (ll)= 15/45%= 33.33x4=133.32 (lll)= 15/2=7.5 7.5x4=30

what is the answer of 3x-5>1/2x+8x?

Answers

Answer:

x < -10/11

Step-by-step explanation:

Which of the following is the solution to the equation t/3 = -9

Answers

t=-27? not sure u didn’t give any possible answers

Which relation is a function?

Answers

Answer: B

Step-by-step explanation:

Answer: is B Explanation: because a function is a relation in which no two ordered pairs have the same first element! :)

9. Find the slope represented in the table
below. Show all work.
Х
y
7
-30
11
-54
13
-66
20
- 108

Answers

Answer:bruh I’m still tryna figure this out

Step-by-step explanation:

Solve each system by elimination: -7x-6y=4 -3x+2y=20

Answers

Answer:

Step-by-step explanation:

-7x - 6y = 4

-9x + 6y = 60

-16x = 64

x = -4

-3(-4)+2y=20

12+2y=20

2y=8

y =4

(-4,4)

Please help! A line has a slope of -2 and a y-intercept of -3. Graph the line using the slope and y-intercept. Which of the following points lie on this same line? Check all that apply.

Answers

Answer:

2. -1.5, 0

3. -6, 9

5. 3, -9

Step-by-step explanation:

Given parameters:

Slope = -2

y - intercept = -3

Unknown:

The point that lies on the line = ?

Solution:

To do the equation of the line,

y = mx + c

y and x are the coordinates

m is the slope

c is the y -intercept

Input the parameters:

y= -2x -3

The points that lie on the line will conform with the equation:

y + 2x = -3

1. -2, 0

y = 0 and x = -2

0 + (-2)2 = -4

2. -1.5, 0

y = 0 and x = -1.5

0 + 2(-1.5) = -3

3. -6, 9

y = 9, x = -6

9 + 2(-6) = 9 - 12 = -3

4. 2, -3

y = -3 and x = 2

-3 + 2(2) = -3 + 4 = 1

5. 3, -9

y = -9, x = 3

-9 + 2(3) = -9 + 6 = -3

6. -4, 4

y = 4 , x - 4

4 + 2(-4) = 4 - 8 = -4

The boldened coordinates line on the same line.

can someone help out with this please? (i just put a random answer) but can someone help me out with the actual answer and explain how it’s the answer?

Answers

Answer:

distribute on each side is correct :)

How do I solve permutations and combinations?

Answers

Answer:

by formulas . you can solve permutations and combinations by formulas .

Which Expression has a value of 2/3

Answers

Answer:

(8 + 24) ÷ (12 x 4)

Step-by-step explanation:

At Teen Tops, a package of 5 T-shirts costs $38. At
Bargain City, a package of 4 T-shirts costs $34. Which
statement is the most accurate?

A. Bargain City is the better buy because it sells T-shirts at $8.50 per T-Shirt

B. Teen Tops is the better buy because the packages has more T-shirts

C. Bargain City is the better buy because $34 is less than $38

D. Teen Tops is the better buy because it sells T-shirts at $7.60 per T-shirt

1/4x+6.5 decimal form 0.25x+6.5
or
1/4(x+26) decimal form 0.25(x+26)

Please answer this question

Answers

Answer:

if it is a square, then it must be a quadrilateral

i need this this fast!! please

Answers

Answer:

last one

Step-by-step explanation:

Find the slope passes through (-5,2) and (3,3)

Answers

Answer:

1/8

Explanation:

y2-y1/x2-x1

3-2/3-(-5) = 1/8

A basketball player is 90 inches tall. A model is created of the player using a scale factor of 1:20. How tall is the model in inches?

Answers

Answer:

4.5

Step-by-step explanation:

Answer:

The answer is 1:16

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