Mathematics Middle School

change in v =9.8m/s 2 times t

Answers

Answer 1

Answer:

v = 39.2 m/s

Step-by-step explanation:

They gave you the equation for velocity during freefall in picture2 as:

v = 9.8t m/s

they ask you what the value of v (velocity) is after t=4 sec.

Just plug in t=4 into the equation.

v = 9.8t

v = 9.8(4)

v = 39.2 m/s

Related Questions

Which expression is equivalent to the expression: -3(4x-2)-2x
A.) -8x
B.) -16x
C.) -14x - 2
D.) -14x + 6

Answers

Answer:

The answer is D.

Step-by-step explanation:

-3(4x) = -12x, -3(-2) = -6, and then we have -2x. -12x - 6 - 2x simplified is

-14x - 6.

Help me pleaseeeeeee

Answers

everything except the last two, I think.

Last question for this part pls help thank you - no bitly

Answers

C) today’s soup will taste the same

Explanation: first divide 9 by 12 to get 0.75 or 75%. Then divide 6 by 8 to get 0.75 or 75%. Because they have the same percentage, the soup will be the same

scsjdb and bobs hebdid is d item

Please help me no links just help

Answers

Answer:

Harpers Haulers charge less than the other company.

Step-by-step explanation:

0.4 times 160 equals 64

64+68=132

0.65 time 160 equals 104

104+23=127

127 is less that 132

Harpers Haulers is the answer

I got 240 so I just need to double-check that. I also need to explain why it's 240 mins? Maybe an expression? Help

Answers

Let’s find the slope of this equation

Slope formula:

(y2-y1/x2-x1)

Plug things in

(-3000-0/20-0)

(-3000/20)

Condense the fraction

Slope = -150 or lowering 150 feet per minute.

Let’s get point slope form, add in some points.

Point slope form:

y - y1 = -150(x - x1)

Plug things in

y - (-3000) = -150(x - 20)

y + 3000 = -150x + 3000

Subtract 3009

y = -150x

Plug in -36000 for y

(-36000) = -150x

Divide by -150

x = 240

You are correct, it took 240 minutes.

ok yeah I can find what the name is but how in the heck do I find the value of x?!!! directions in photo no links or your getting reported!!!!!

Answers

This is an isosceles triangle, as indicated by the two lines on two sides (they are equal). One angle is 45 degrees, as indicated. We know that the angles of the two equal sides are equal as well. Knowing that all triangles sum up to 180 degrees, we can subtract 45 from 180 and divide by two to get each equal angle.

Here it is:

180-45=135

135 divided by 2 is 67.5.

This means that the value of x is 67.5 degrees.

To check, we can add all of the sums and it should be 180 degrees.

45+67.5+67.5=180

∴ x= 67.5 degrees

Take what a triangle equal up to them subtract 45

PLS HELP ASAP !!!!

The “average” of a set of data, found by adding all pieces of data and dividing by the number of data.

Mean

Median

Mode

Range

Answers

Answer:

The answer is Mean.

Mean is the average set of data.

MEAN! ITS MEAN!

- hope tht sorta helped

In the diagram below, DF = JL = a, FE = LK = b, and triangle DEF is a right triangle.
Use the drop-down menus to complete the proof that if the equation a² + b2 = c2 is true of
the side lengths in triangle JKL, then triangle JKL must be a right triangle.

Answers

ΔDEF and ΔJKL are congruent to each other.

What is Congruency?

Congruent triangles are triangles that have the same size and shape

This means that the corresponding sides are equal and the corresponding angles are equal.

Given

DF = JL = a, FE = LK = b, ΔDEF is a right triangle.

As Pythagoras theorem can be used in ΔDEF.

Also ΔJKL Hence angle K is the right-angle.

As, ∠F = ∠L = 90°,

DF = JL = a,

FE = LK = b

Hence, ΔDEF and ΔJKL are congruent to each other.

Learn more about this concept here:

https://brainly.com/question/23378834

#SPJ1

Stephanie took out a loan from her bank that charges 8.5% interest. If she borrowed $10,000 for 20 years, what is the total amount that she will have to pay the bank?

Answers

Answer:

10 850

Step-by-step explanation:

First, take 8.5% of 10 000, which is 850.

Then that plus what she already had to pay equals 10 850.

Answer: something like 10 850 probably

In the course of a short race, a car does 50,000 J of work in 7 s. What is the power of the car during the race? (round to the nearest whole number)

Answers

Answer:

Work done is the product of distance and force, it is measured in joules.

Power is the rate of work done given by dividing the work done by time

Power (watts)= workdone (J)/ time (s)

= 50,000J/7 sec

= 7142.857 watts

Therefore, the power of the car during the race was 7142.857 watts

Step-by-step explanation:

Find the surface area of the prism. 7yd 7yd 7yd.

Answers

Answer:

294 yd ^2

Step-by-step explanation:

it should be correct!

It’s 294yd 2 step equations

Jeff bought a bottle of water for $2. He also bought some hot dogs for $3 each. Jeff did not spend more than $14 on the hot dogs and the bottle of water. Witch inequality can be used to find h, the number of hot dogs that jeff could have bought. (If you answer I'll give you a brainilst;))

F. 3h-2<≤4
G. 3h+2≤14
H. 3H-2≥14
J. 3h+2≥14

Answers

Answer:

3H - 2 ≤ 14 I believe.

If i'm wrong forgive me

Answer:

G: 3h+2[tex]\leq \\[/tex]14

Step-by-step explanation:

He could've spent 14 dollars, or less, so the sign is the less than, equal to sign. The 3h represents the cost of hot dogs times the number of hot dogs. The represents the cost of the water bottle. It is addition because he purchased both the water bottle and hot dogs.

Please please please please help me:
I WILL GIVE BRAINLIEST TO BEST ANSWER AND 5 STARS AND IT IS WORTH 20 POINTS

Answers

Answer:

Second option is correct one (9,3/2)

Value of x=9

Value of y

2y=x-6

By substituteing value of x

2 y=9-6

2y=3

Y =3/2

(x,y)

(9,3/2)

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Answer:

9 3/2

Step-by-step explanation:

substitute the given value of X into the equation 2y=X-6

2y=9-6

solve for y

y=3/2

The possible ordered pair of the system is the ordered pair (x,y)

(x,y)=(9, 3/2)

check the given ordered given pair is the system of equations

2 ×3/2=9-6

simplify the equality

9=9

3=3

since all the equalities are true,the ordered pair is the solution of the system

(x,y) =(9 3/2)

Mr. Nguyen earns a commission on each car he sells. At the end of the day, he had sold $200,000 worth of cars and earned $10,000. Approximately what is Mr. Nguyen's commission rate as a percent?

Answers

I think it’s %20, not sure though.

Urgent I’ll give brainlist

Answers

It’s a u have to pay attention to the sides and the numbers

help fake answers will be reported

Answers

Answer:

i think it is 1/32

Step-by-step explanation:

An equilateral triangle has sides of length 10 cm.
**DIAGRAM IN PICTURE**

a. Calculate the perpendicular height, h, of the triangle.

b. Calculate the area of the triangle.

Give your answers correct to one decimal place. 10 cm 10 cm 10 cm

Answers

Answer:

a. 8.7cm

b. 43.5cm squared

Step-by-step explanation:

a. draw the triangle with a side length of 10cm, and measure the height which is 8.7cm.

b. formula to find the area of a triangle: (base into height) divided by 2 ((b x h) / 2)

the base is 10

the height is 8.7

(10 x 8.7)/2 = 87/2 = 43.5 cm squared

A is 8.7cm
B is 43.5 cm

Question 1
Part A: Explain why x = 3 makes 4x − 1 ≤ 11 true but not 4x − 1 < 11. (5 points)

Part B: What value from the set {4, 5, 6, 7, 8} makes the equation 8x + 1 = 57 true? Show your work. (5 points)

Question 2
A theater company has raised $870.75 by selling 25 floor seat tickets. Each ticket costs the same.

Part A: Write an equation with a variable that can be solved to correctly find the price of each ticket. Explain how you created this equation. (5 points)

Part B: Solve your equation in Part A to find the price of each floor seat ticket. How do you know your solution is correct? (5 points)

Question 3
A boating company has the following notice at the gate:

"Children under the age of 13 are not allowed to operate a boat."

Part A: Write an inequality to show the age of children who are allowed to operate a boat. (5 points)

Part B: Describe in words how you can show the solution to this inequality on a number line. (5 points)

Question 4

Sue earns $6 an hour walking her neighbor's dog.

Part A: Create two variables and determine which is dependent and which is independent for this situation. (4 points)

Part B: List three ordered pairs to show the values of the two variables. (3 points)

Part C: Write an equation to represent the relationship between the two variables. (3 points)

Answers

Step-by-step explanation:

For part A:it has to be equal because if x=3 and they’re talking about 4x, that 4*3=12 and 12-1=11

For part B:it is 7 because if c=7 and it is 8x, 8*7=56 and 56+1=57

For Question 2/part a: if each ticket costs the same, you could call the price of the ticket x. The equation can be x*25=$870.75 which means that you have to divide870.75 by 25 which would equal $34.83 and you could plug $34.83 in x and solve the equation

For question 3: you could say:3 is not equal to 3+10 or 5 is not equal to 5+10

For question 4: I don’t know if this is right but I think that that price is dependent on the time because you won’t get the money if you don’t spend any time doing your job

Hope it helps!

Help plz .......................

Answers

Step-by-step explanation:

hope this helps ..........

Answer:

Look at the image.

Step-by-step explanation:

0.25(4x - 24) + x = 14

x - 6 + x = 14

2x - 6 = 14

2x - 6 + 6 = 14 + 6

2x = 20

2x ÷ 2 = 20 ÷ 2

x = 10

The goalie on the Iceblades hockey team saves (blocks) 73% of the opponent's shots. With 10 minutes to go, the Iceblades are ahead by one goal, and they will win if the other team does not score.
The other team takes 5 shots in the final 10 minutes. The Iceblades do not score any more goals.
The table shows pairs of random digits. The pairs in each group simulate the 5 shots taken by the opponent.
Answer the questions to estimate the probability that the Iceblades will win the game.

1. The paired digits 00 to 99 represent 100 shots.
Let 00 to 72 = a shot that is saved. Which digits represent a goal scored? Explain.

2. Each group represents the 5 shots taken by the other team. To win the game, the Iceblades cannot let the other team score any goals.
For a group to be a success, how many of the 5 shots does the goalie need to save?

3. Group 1 is a success. Explain why.

4. In this simulation, which groups are successes? How many successes are there in the 10 groups?

5. Estimate the probability the Iceblades will win the game. Give your answer as a percent.