Mathematics Middle School

Jared flipped a fair coin 50 times. He expected half of his tosses to land on heads, but he only got heads 15 times. If he increased the number of times he flipped the coin to 500, he should expect the number of heads to be-

Answers

Answer 1

150 but this wouldnt be how many times it happens because it is all based of off chance and possibility

Answer 2

Maybe its 150, i think

Related Questions

Charlott is running at a rate of 9 km/h. What is charlotte's speed in m/s?

Answers

1km = 1000m
1h = 60min = 3600s
9000m/3600s plug it into calculator

Answer:

The Charlott's speed in m/s is 2.5 m/sec

Step-by-step explanation:

Given : Charlott is running at a rate of 9 km/h.

We have to find the Charlott's speed in m/s.

Consider the given speed of Charlott is 9 km/h.

Since, 1 km = 1000 m

and 1 hour = 3600 sec

Therefore, [tex]9\frac{km}{hr}[/tex] becomes,

[tex]9\frac{km}{hr}=9\times\frac{1000\ m}{3600 \ sec}=2.5[/tex]

Thus, The Charlott's speed in m/s is 2.5 m/sec

25(y+1)-x^2(y+1) i don't know the answer

Answers

It seems like you've begun to group and factored out the GCF.

Because the inner binomials (the ones in parentheses) are the same, the next step is to rewrite the equation like so:

(25-x^2)(y+1)

From here, we can further factor (25-x^2) since they are both perfect squares.

(5+x)(5-x)(y+1)

No further terms can be factored so that is the final answer. Hope this helps!

8x-2y-5=11 write the equation in function form

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f(x,y)=8x-2y-16
In function form it all has to be on one side

The correct answer to the question *interquartile range

Answers

The interquartile range (IQR) is 20

You find this by subtracting the values of Q3 and Q1
Q3 is the right most edge of the box which is 45
Q1 is the left most edge of the box which is 25

IQR = Q3 - Q1 = 45 - 25 = 20

Side Note: The median is not 45. The median is actually 40 since this is the middle line of the box, which is in between 35 and 45

the correct answer is 20

x/10+5/12= 3x-1 what is x

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the answer for x is x = 85/174

What is the constant of variation for the quadratic variation? 6y = 4x2

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4/3 would be the answer if that is multiplication sign between 4 and 2.

Plzzzz help me ??!?!?!??

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Pythagorean Theorem is for right triangles

right triangles have a 90 degree angle in them

D is a right triangle

d is the correct answer

ONLY THE CORRECT ANSWERS PLEASE!!!!

Which term best represents the intersection of two pages of an open book?

A. line

B. angle

C. plane

D. point

Answers

the answer to your question is A ! I HOPE THIS HELPS

A social networking site recorded that 80% of the people who became members of the site one month were between 30 and 40 years old. The equation below represents this information, where x represents the total number of people who became members of the site that month: x = 0.8x + 72 How many people who became members of the site that month were between 30 and 40 years of age?

Answers

x = 0.8x + 72

when x is alone you can say it is 1x

Subtract 0.8x from both sides:

0.2x = 72

x = 72/0.2

x = 360

Final answer:

To solve the equation x = 0.8x + 72, subtract 0.8x from both sides and then divide by 0.2 to solve for x. The result is 360.

Explanation:

To solve the equation x = 0.8x + 72, we need to isolate the variable x on one side of the equation. First, subtract 0.8x from both sides: x - 0.8x = 0.8x + 72 - 0.8x. Simplifying this gives 0.2x = 72. Then, divide both sides by 0.2 to solve for x: x = 72 ÷ 0.2 = 360. Therefore, 360 people who became members of the site that month were between 30 and 40 years of age.

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the slopes of two lines are 5/6 and 2/p determine the value of p that will make the lines parallel

Answers

if the lines parallel then the slopes equal
so 5/6 = 2/p
so p =2.4

Alvin is 12 years older than Elga. The sum of their ages is 112. What is Elga's age?

Answers

Lets Elga's age = x
12 + x = Alvin
x + 12 + x = 112
2x + 12 = 112
2x = 100
x = 50

Elga's age = 50
Alvin = 50 + 12 = 62

answer
Elga's age = 50

so first you have to put up an equation x+12=112 elga's age is 100 if im not correct im very sorry

Jose and a group of friends bought concert tickets for $257. The booking agency also charged a fee, bringing the total cost to $274.99. The amount of change is $17.99. What is the percent increase in the cost due to the fee?

A.6%
B.7%
C.8%
D.9%

Answers

So you already know the difference between the new number and original number, so all you have to do now is plug it in to this: Percentage Change=Difference/Original Number x100. So 17.99/257=.07x100 which equals 7%. So B is the correct answer.

Answer:

A.6%

B.7%

C.8%

D.9%

The solution generated by the calculator is 5.779E–8. Describe how to interpret the solution.

Answers

the E-8 at the end means the number is multiplied by 10^-8

so 5.779E-8=

5.779 x 10^-8 =

a negative power means move the decimal place that many places to the left

so 5.779 x 10^-8 =

0.00000005779

Answer:

the E-8 at the end means the number is multiplied by 10^-8

so 5.779E-8=

5.779 x 10^-8 =

a negative power means move the decimal place that many places to the left

so 5.779 x 10^-8 =

0.00000005779

Step-by-step explanation:

A vineyard owner hires 25 people to harvest grapes. The vineyard covers 30 acres. The harvest takes 9 days to complete. A neighbour has a vineyard measuring 20 acres and needs his harvest finished in 5 days. Assuming all people work at the same rate, how many people should he hire?

Please show working out.

Answers

Answer: 30 people

In the first vineyard, it needs 25 people working for 9 days to finish 30 acres of vineyard. Using this information you can determine the worker speed. The number of worker and days were given will increase the speed, but the area of the vineyard will decrease it. The calculation would be:

Worker speed= worker number * times given / vineyard area
Worker speed= 25 people * 9 days / 30 acres = 7.5 people days /acres

Applying the same calculation into the second vineyard would be:
Worker speed= worker number * times given / vineyard area
7.5 people days /acres = worker number * 5 days / 20 acres
Worker number= (7.5 people days /acres ) / 5 days x 20 acres= 30 people

Which statement best compares the rate of change of the two functions?

Answers

Final answer:

The rate of change of a function is reflected in the steepness of its graph. A function with a higher rate of change will have a steeper line. The correct comparison statement will depend on the specific slopes of Line A and Line B.

Explanation:

In the context of this question, the rate of change refers to the steepness of the lines or the slopes of the functions represented by the lines. When comparing the rates of change of two functions, you look at how steep or flat each line is.

Let's consider the statements given:

Line A is a decreasing line while line B is an increasing line, with line B being much steeper than line A.Line A is a decreasing line while line B is an increasing line, with line A being much steeper than line B.Line B is a decreasing line while line A is an increasing line, with line A being much steeper than line B.Line B is a decreasing line while line A is an increasing line, with line B being much steeper than line A.

To determine the best statement, analyze the steepness of the lines. For example, if Line A is decreasing and much steeper than Line B, then it would have a larger (but negative) rate of change.

Remember, the

rate of change

in a function can be understood as the rate at which the y-values are changing for each increment in the x-values. A higher rate of change means the function is increasing or decreasing more quickly.

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Which set of side lengths forms a right triangle??

Answers

The answer is D. 15, 36, 39.

If a^2 + b^2 =c^2, then the triangle is a right triangle

2^2 + 3^2 ??=?? 13^2
4 + 9 ??=?? 169
13 ??=?? 169 FALSE

4^2 + 6^2 ??=??10^2
16 + 36 ??=?? 100
52 ??=?? 100 FALSE

9^2 + 12^2 ??=?? 18^2
81 + 144 ??=?? 324
225 ??=?? 324 FALSE

15^2 + 36^2 ??=?? 39^2
225 + 1296 ??=?? 1521
1521 ??=?? 1521 TRUE 15, 36, 39

Find the equivalent function to f(x) = 3(6)^2x

Answers

This is the concept of algebra, the function given can be written as follows;
f(x)=3(6)^(2x)
f(x)=3(6^2)^x
when we expand the above we get:
f(x)=3(36)^x
the answer is f(x)=3(36)^x

Answer:

f(x) = 3(36)x

f(x) = 182x

f(x) = 108x

f(x) = 9x(36x)

Step-by-step explanation:

Select all of the following expressions that are equivalent to ab - 2 = c
a = c/b -2
b = c + 2/a
ab = c + 2
a - c/2 = b
b - 2/c = a
a = c + 2/b

Answers

The only one that's equivalent is The 3rd one. ab=c+2

Answer:

Option C.

Step-by-step explanation:

The given expression is ab - 2 = c

Option a : a = [tex]\frac{c}{b}[/tex] - 2

ab = c - 2b

Not equivalent to the original expression.

Option b : b = c + [tex]\frac{2}{a}[/tex]

ab = ac + 2 ⇒ [tex](\frac{ab-2}{a})[/tex] = c

Not equivalent

Option c : ab = c + 2

ab - 2 = c

Equivalent to original expression

Option d : a - [tex]\frac{c}{2}[/tex] = b

2a - c = 2b

Not equivalent

Option e : b - [tex]\frac{2}{c}[/tex] = a

bc - 2 = ac ⇒ c (b-a) = 2 ⇒ c = [tex]\frac{2}{b-a}[/tex]

Not equivalent

Option f : a = c + [tex]\frac{2}{b}[/tex]

ab = bc + 2

[tex](\frac{ab-2}{b} )[/tex] = c

Not equivalent

someone help me plz.

Answers

Just do conversions, you know that there are 100 cm in a meter or you could just simply move the decimal place to the left by 2

The steps below show the incomplete solution to find the value of x for the equation
7x − 3x − 4 = −1 + 21:

Step 1: 7x − 3x − 4 = −1 + 21
Step 2: 7x − 3x − 4 = 20
Step 3: 4x − 4 = 20

Which of these is most likely the next step?

4x = 24
4x = 16
4x = 5
4x = 80

Answers

in a problem such as this, we want to isolate the term x to one side.
therefore, the next step in the process will be to get the term "4" to the right side.
to do this, we add 4 to 20 since it is a negative.
4x=20+4

so the answer is 4x=24

hope this helps! :)

The most likely step after the step3 is 4x = 24.

Linear Equation in one variable:

The linear equation in one variable is an equation which is expressed in the form of ax + b = 0, where a and b are two integers, and x is a variable and has only one solution.

According to the given question

we have, a linear equation in variable x, 7x - 3x -4 = -1 + 21

For solving the above equation we will do the following steps

7x -3x -4 = -1 +21

Step1: 4x - 4 = 20

Step2: 4x - 4-20= 0

Step3: 4x -24 = 0

Step4: 4x = 24

Step5: x =24/4 =6

Hence, the most likely step after the step3 is 4x = 24.

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What is the solution to the following equation?

2(3x − 7) + 18 = 10

1
3
5
6

Answers

2(3x - 7) + 18 = 10
Subtract 18 from both sides.
2(3x - 7) = -8
Distribute the side with parenthesis.
2(3x) + 2(-7) = -8
6x -14 = -8
Add 14 to both sides.
6x = 6
Divide both sides by 6.
x = 1

I hope this helps!

2(3x - 7) + 18 = 10

Subtract 18 from both sides:

2(3x - 7) = -8

divide both sides by 2

3x - 7 = -4

add 7 to both sides

3x = 3

divide both sides by 3:

x = 1

So your answer is A) 1

How does ray ab and ac form both a line and angle

Answers

Rays AB and AC both have a point in common. That is the A point or normally called the vertex. From the point both go in different directions making a distance between both. This distance has a degree in which it separated that forms the angle. This also forms a line because both rays, in theory, are lines. They just tend to continue to infinity in just one direction.

Peter is 2 years older than Winnie. Peter's age is 16 years less than seven times Winnie's age. The equations below model the relationship between Peter's age (p) and Winnie's age (w):

p = w + 2
p = 7w − 16

Which is a possible correct method to find Peter's and Winnie's ages?

Solve w + 2 = 7w − 16 to find the value of w.
Solve p + 2 = 7p − 16 to find the value of p.
Write the points where the graphs of the equations intersect the x axis.
Write the points where the graphs of the equations intersect the y axis.

Answers

substitute P on the second equation so now it looks like...
w+2 = 7w-16. from there we can see that w = 3
So basically, the first answer.

Solve w + 2 = 7w - 16 to find the value of w.

this,is multiplication variables 2 (5x × 3y)=

Answers

the answer is 30xy. Inside is 15xy times 2 equals 30xy

Farmer George is painting 3 chicken coops. He started painting this morning. Now he only has 3/4 of a chicken coop left to paint this afternoon. how many chicken coops did farmer George paint this morning

Answers

Final answer:

Farmer George has painted 2 1/4 chicken coops this morning. This is calculated by subtracting the remaining part of the chicken coop(3/4) from the total chicken coops(3).

Explanation:

Farmer George had 3 chicken coops to paint in total. He only has 3/4 of one chicken coop left to paint. We can subtract the amount of work left from the total amount of work to figure out how much work he has done already.

So, if we take the total amount of chicken coops (which is 3) and subtract the remaining part that needs painting (which is 3/4), we will know how many chicken coops Farmer George has painted this morning.

The calculation is as follows: 3 - 3/4 = 2 1/4 coops

So, Farmer George completed painting 2 whole chicken coops and 1/4 of the third chicken coop this morning.

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Final answer:

Farmer George painted 2.25 chicken coops this morning. This is calculated as the total number of chicken coops (3) minus the remaining part of the chicken coop left to paint (3/4).

Explanation:

The question is asking us about how many chicken coops Farmer George painted this morning. Farmer George started with 3 chicken coops and now has 3/4 of a chicken coop left to paint. Since he's already started painting the last chicken coop, this means he has painted 2 whole coops and 1/4 of the last coop. Thus, the answer to how many chicken coops Farmer George painted this morning is 2.25 chicken coops. Mathematically, this is calculated as 3 (the total number of chicken coops) minus 3/4 (the remaining part of the chicken coop left to paint).

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if the area of a square is 529 in 2 , what is the length of a side of the square

Answers

The length would be 23 inches

How do i solve this equation: 4/5a + 3 = 1/3a - 8

Answers

You have to [tex]subtract [/tex] by [tex] \frac{1}{3}a [/tex] on [tex]EACH[/tex] of the [tex]sides [/tex] you're [tex]working [/tex] with!

[tex] \frac{4}{5}a + 3 - \frac{1}{3}a - 8 - \frac{1}{3}a [/tex]

Which [tex]gives [/tex] us: [tex] \frac{7}{15}a + 3 = -8 [/tex]

[tex]Now, [/tex] that we got these [tex]steps[/tex] out of the way, let's [tex]subtract [/tex] [tex]3[/tex] from the sides you're working with!

[tex] \frac{7}{15}a + 3 - 3 \\ = -8 -3 [/tex]

[tex] \frac{7}{15}(a) = -11[/tex]

We have gotten these [tex]steps [/tex] out of the way now lets [tex]multiply [/tex] by [tex] \frac{15}{7} [/tex] on your [tex]sides[/tex] because, it is the [tex]reciprocal [/tex] of [tex] \frac{7}{15} [/tex]

So, [tex] \frac{15}{7}( \frac{7}{15}a ) = \frac{15}{7} (-11)[/tex]

Cancel out: [tex] \frac{15}{7}( \frac{7}{15} )[/tex] because, it equals to:[tex]1[/tex]

[tex] \frac{15}{7}(-11) = \frac{-165}{7} [/tex]

Therefore, your [tex]answer [/tex] is: [tex] \frac{-165}{7} [/tex] [tex]aka[/tex] [tex] 23\frac{4}{7} [/tex]

Good luck on your assignment and enjoy your day

~[tex]MeIsKaitlyn:)[/tex]

write with fractional exponents. (do not use parenthesis) (4)√y^3)

Answers

The power rule (or law of indices) that applies to this expression is

[tex] x^{ \frac{m}{n} } = \sqrt[n]{x^{m} } = ( \sqrt[n]{x}) ^{m} [/tex]

we have [tex]4 \sqrt{ y^{3} } [/tex]
we write [tex] \sqrt{ y^{3} } = y^{ \frac{3}{2} } [/tex] , note that square root [tex] \sqrt{x} [/tex] equals to [tex] \sqrt[2]{x} [/tex]

hence, the final expression is [tex]4( y^{ \frac{3}{2} } )[/tex]

Gas station A has posted a chart that shows the price of gasoline in terms of the number of gallons. Gallons Price 3 9.15 5 15.25 7 21.35 Gas station B has an equation that represents the price, p, for gallons, g, of gasoline as p = $3.08g. Which gas station sells gasoline at a lower rate? What price does it charge? Gas station A sells gasoline at a lower rate. Its price is $3.08 per gallon. Gas station B sells gasoline at a lower rate. Its price is $3.05 per gallon. Gas station A sells gasoline at a lower rate. Its price is $3.05 per gallon. Gas station B sells gasoline at a lower rate. Its price is $3.08 per gallon.

Answers

The first one sells gas at a lower rate.
Rate is $3.05

Describe how you can tell that a fraction corresponds to a repeating decimal and not a terminating decimal

Answers

When a fraction corresponds to a repeating decimal, it's denominator is 9 or 99.

For example, 4/11 = 36/99 = 0.36 with bar notation over 36.

Example #2: 2/3 = 6/9 = 0.666....
or also written as 0.6 with bar notation over 6.

You know a fraction responds to a terminating decimal because it can be simplified to a terminating decimal.

Example: 2/4 = 0.5

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