Mathematics Middle School

A coin has a heads side and a tails side.

Chuck flips the coin 80 times.

About how many times will it land heads up?
25
40
50

Answers

Answer 1

Answer: 40

Step-by-step explanation: the reason why is that there's a 50/50 chance that it could land on heads or tails.

Answer 2

Answer:

40

Step-by-step explanation:

A coin has a 1/2 chance to land on both heads and tails sides (50/50), so cut 80 in half (80/2), and you get 40.

Related Questions

Solve for Y
3/11 = 6/y
y=

Answers

Answer:

y=22

Step-by-step explanation:

MARK AS BRAINLEST!

It’s 22. Mark me as brainliest

The distance from Jamestown to Kenneville is 180 miles, the distance from Kenneville to Elizabeth City is 300 miles, and the distance from Elizabeth City to Jamestown is 240 miles. Which of the following equations could NOT be used to determine if the lines connecting the towns form a right triangle?



A.180 squared plus 300 squared equals 240 squared,
B.300 squared minus 240 squared equals 180 squared,
C.80 squared plus 240 squared equals 300 squared,
D.300 squared minus 180 squared equals 240 squared

Answers

I think it is B but I might be wrong

Surface area of a rectangular prism with side lengths of 5, 9 and 2

Answers

Answer:

Right rectangular prism

Step-by-step explanation:

In science class, Matt tried to find the mass of a penny. A penny is known to have a mass of 2.5 g. Matt overestimated the weight of the penny and had a percent error of 4%. How much did Matt think the penny weighed?

Answers

answer is 90%

Step-by-step explanation:

0.2 ( 10 - 5c ) = 5c - 16

Answers

Answer: c = 3

Step-by-step explanation: Distribute 0.2 to (10-5c)

2-1c=5c-16

Then subtract 2 on both sides and subtract the 5c.

-1c=5c-18

-6c=-18

Then divide -6 to -18

-18/-6 = 3

the answer above is correct!^

What is the exponential regression equation that fits these data? X= 1,2,3,4,5,6 Y=4,9,27,90,250,580

Answers

Answer:

A

Step-by-step explanation:

Two angles are supplementary. One angle is 155°. What is the measure of the other angle?
Geometry

Answers

Answer:

25

Step-by-step explanation:

Answer: I belive this is 25

Step-by-step explanation:

for 125 and 175 is 155 and 75 is excluded

Jack's tent is shaped like an isosceles triangle. The height of the tent measures 7 feet and the diagonal side measures 9 feet. Find the length of the tent's base. Please explain how you got the answer, thank you! Need help asap. (Triangle photo in image)

Answers

Answer:

its 7ft

Step-by-step explanation:

7 feet i believe tel me if thats right

What is the area of Brad's sign?
Don't worry about Marcy's sign.
Geometry

Answers

Answer:

Step-by-step explanation:

Area of Brad's sign = [tex]\frac{1}{2}*base * height[/tex]

                                [tex]= \frac{1}{2}*22*6\\\\= 11*6\\\\= 66 in^{2}[/tex]

Please solve this equation

2z+3=9

Answers

Answer:

Z=3

Step-by-step explanation:

As long as ur happy thats all that matters

Answer:

z=3

Step-by-step explanation:

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

2z+3=9

Step 1: Subtract 3 from both sides.

2z+3−3=9−3

2z=6

Step 2: Divide both sides by 2.

2z/ 2 = 6/ 2

z=3

(PLEASE HELP ME!!!! THIS IS TIMED SO PLEASE HELP!!! I WILL MARK YOU BRAINIEST IF YOUR ANSWER IS CORRECT!!!!!)

Answers

Answer:

y=-4/5x+2

Step-by-step explanation:

SORRY FOR THE LATE RESPONSE

slope-intercept form is y=mx+b

b is the y-intercept -> 2

m is the slope, which would be the rise/run -> -4/5

to identify the slope all you need to do is pick two points on the line, and find the direction of the line from left to right. rise/run basically means you find the distance going up and down first, and then the distance from left to right next.

now just put the equation together-> y=-4/5x+b

let me know if this helped, or was even right lol

Sorry, I don’t see the question. Have a great day!

A rhombus has sides 10 cm long and an angle of 60°. Find the diagonals of the rhombus.

Answers

Since all the sides are equal, the altitude is

10 sin60° = 5√3

To see this, draw the rhombus ABCD and drop an altitude from D to AB. Now you have a right triangle with hypotenuse=10 and base angle=60°

Find the area of the composite figure

Answers

644 inches squared , area of the trapezoid is 132 area of rectangle is 512
Area of the rectangle is 512

Unit: Geometry HElp I dont understand

Answers

Answer:

11 and 23

Step-by-step explanation:

So, what is scaling?

Scaling is basically when a shape is inlarged or shruken by a specific amount on all sides.

In this case, one of the shapes side's is 10.

Now, they say that the scale value is more than 1. What does this mean?

It means that the new, scaled number is going to be at least as big as 10.

We dont have to worry about finding a exact number, since they do not give us any information to scale with.

So, all we have to do is look at the graph, and see what numbers are larger than 10.

Is 2 units larger than 10? No, thats only about 1/5 the orginal size, not larger than 1.

Is 5 units larger than 10? No, thats only abouit 1/2 the orginal size, not larger than 1.

How about 11? Is it larger than 10? Yes, its about 11/10 the orginal size, which is bigger than 1.

Finally we have 23? Is it larger than 10? Yes, its a little over 2 times bigger than the orginal size.

So your two answers are:

11 and 23

Hope this helps! :)

Nznsnznsjsjakajnsjsksks

When each side of a rectangular prism is doubled, how does the volume of the new rectangular prism compare to the original prism?

A. The volume will be 4 times the original volume.

B. The volume will be 8 times the original volume.

C. The volume will be double the original volume.

D. The volume will be one-half the original volume.

Answers

I believe the Correct answer is B if I’m right please mark me as brainliest

Help me pls i will love you forever lol

Answers

Answer:

95

Step-by-step explanation:

there are 4 squares and i added the areas up

Answer:

95

Step-by-step explanation:

easy

HELP I GIVE YOU 21 POINTS EZ QUESTION!!!!

Answers

what is the question asking?
I do not understand

There are 361 seventh-grade students going on a field trip. If each bus holds 40 people and there are 20 chaperones going, how many buses are needed?

Answers

Answer:

9

Step-by-step explanation:

Think it’s 9. Hope I could help.

Is y=-(2)/(5)x proportional?

Answers

Answer:

y=5x is proportional.

Step-by-step explanation:

Answer:

10 is the awnser to the question ( mark as best awnser)

please help me asap


CLAIM:

Examine the system model below, which shows a car moving along a track at two different points in time. Assume there is no friction between the car and the track.


In the before image, a car is moving along a track at a constant speed towards a motionless wheel.


In the after image, the car has contacted the wheel, which begins to spin. The car continues to travel along the track at a slower speed.


THE QUESTION:

Which Claim below best explains what causes the wheel to spin after contact with the car?

1 - The wheel stops spinning because kinetic energy was transferred from the car to the wheel.

2 - The wheel begins to spin because kinetic energy was transferred from the car to the wheel.

3 - The wheel pushes the car, causing it to go faster

4 - The wheel begins to spin because kinetic energy was transferred from the wheel to the car.

Answers

Answer:

The wheel moved because of the car.

Step-by-step explanation:

Only the car could move the wheel so yeah as I said the wheel moved by the cat

exam help !!
A line parallel to the graph of (y − 4) = m(x − 7) passes through (−1,−2) and (m, 10). If
m > 0, what is the value of m?

Answers

M= 1/3
Remember m is the slope so to find the slope use (-1,-2) (-7,-4)

please help!!! i will give brainliest

Answers

Susan has 50 so the difference is 5 sense sheila had 45
the difference is 5.......

Brianna babysits every weekend for her neighbors. They pay her $6 an hour. How much money will Brianna earn if she works h hours?

Equation :
Independent Variable :
Dependent Variable :

Answers

Answer:

v

v

v

Step-by-step explanation:

Equation: 6 x h

Independent variable: Hours she works

Dependent variable: Is the $6 she makes

Please help on this question!

Answers

Answer:

(-4,-2)

Step-by-step explanation:

Hewp pwease!!! IM STUWK

Answers

Answer:

38.5

Step-by-step explanation:

Answer:

f

Step-by-step explanation:

An equation is shown below:

3(2x - 7) = 3

Part A: How many solutions does this equation have?

Part B: What are the solutions to this equation? Show your work.

Answers

A: 1
B: 3(2x-7)=3, 6x-21=3, 6x=24, x=4

Step-by-step explanation:

He is right above

The profit y (in dollars) for a company for selling x games is represented by y=80x. Graph the equation.

Answers

This is a picture of the graph. It is a very slight -,- and +,+ line

If the correlation is -0.9, what can you say about the given data?




NO LINKS PLEASE I WILL MARK BRAINLYST

Answers

Answer:

You can say that the given data is strong and negative (you should also add linear if your line is in a Y = aX + b format)

Step-by-step explanation:

You can say that the given data is strong and negative (you should also add linear if your line is in a Y = aX + b format)

you can say that it is negative

HELP ME PLEASE thanks

Answers

Answer:

i think it is because the profit would cover up for the interest rate

Step-by-step explanation:

i don't know tho so you might need to look it up but this is my best answer

Get correct answer and explain how you got it for brainiest and 20 points.

Answers

Answer:

25 un²

Step-by-step explanation:

Area of trapezoid =

1/2(4+6)*2 = 10 un²

Area Parallelogram =

1 x 6= 6 un²

Area triangle =

1/2(6x3) = 9 un²

Total area = 10 un² + 9 un² + 6 un² = 25 un²

Pictures below.

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

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