3 5 of the first group are right-handed. 80% of the second group are right-handed. What fraction of the class is right-handed?

Answers

Answer 1
4/5 is right handed in the second group
Answer 2

Answer:

7/10

Step-by-step explanation:

To make things simple, let's turn 80% into a fraction, 8/10. To get a common denominator let's turn 8/10 into 4/5. Since they are both of equal size, the first group would have 2/5 left-handed people and the second 1/5 left-handed people. Let's imagine that each group has 5 people in it. There would be 10 people in total. There is 1 person for each fifth so we can add now. 4 + 3 = 7 right handed people. To check, 2 + 1 = 3 and 3 + 7 = 10. so 7/10 of the class is right-handed.


Related Questions

A river guide buys protein bars and bottles of water for participants on a rafting trip. Including taxes, the river guide pays $ 2.50 for each protein bar and $ 1.25 for each bottle of water, spending a total of exactly $ 22.50 . Which combinations of protein bars and bottles of water are possible for the given amounts? Select ALL that apply.

Answers

Answer:

Step-by-step explanation:

2.50   for water

1.25     for protein bar   interesting that is exactly half of the water

22.50   exactly was spent

I couldn't come up a slick equation, so I just applied some logic and used brute forced (trail and error) to solve the problem.

2.5Water + 1.25Protein =   22.5  

      8W     +           2P    =   22.5

      6W     +           6P    =   22.5

      4W     +          10P    =   22.5

      2W     +          14P    =   22.5

There are the possible combinations of both protein bars AND water, since he bought both.  He could have also bought 10 water or 18 protein bars, but that is not part of the combination.

Plz show your work.

Answers

A ....................

help please im so bad at these

Answers

Answer:

i'm not sure if this is right, but this is what i got from a calculator. steps are shown in the pictures.

Step-by-step explanation:

juan drove 126 miles in 3 hours. If he continued at the same rate, how long would it take to travel 336 miles? ​

Answers

Answer:

8 hours

Step-by-step explanation:

First you divide 126 by 3 to get the Miles Per Hour, you should get 42 Miles Per Hour, then, just divide 336 by 42 to get the numbers of hours he will have to drive, (which is 8)

Answer:

8 hours

Step-by-step explanation:

126 miles - 3 hours

336 miles - x hours

Cross multiply

126x = 336 x 3

126x = 1008

Divide both sides by 126

x = 1008/126

x = 8

what is 3/12 as a precent

Answers

Answer: 25%

Step-by-step explanation:

Answer:

25% As a decimal its 0.25

Step-by-step explanation:

Multiply -90/11 by -55/72 with explanation...

Pls fast...Will mark Brainliest for the best one...

Answers

Answer:

25/4

Step-by-step explanation:

Multiplying numerators gives 4950 and multiplying denominators gives 792. 4950/792. simplify to get simplest form as 25/4

Answer:-6.25

Step-by-step explanation:

Select the correct answer.
Consider the graph of the function f(x) = e^x.

Answers

Answer:

Option A

Step-by-step explanation:

Equation of the graph → f(x) = eˣ

Range of the given function is (0, ∞).

If the graph of the given function is translated by 3 units up.

New function will be,

g(x) = eˣ + 3

And the range of the new function will be (3, ∞).

Option A will be the correct option.

The range of the new function will be (3, ∞).

What is the range of a function ?

The range of a function is the complete set of all possible resulting values of the dependent variable (y, usually), after we have substituted the domain

Equation of the graph → f(x) = eˣ

Range of the given function is (0, ∞).

If the graph of the given function is translated by 3 units up.

New function will be,

g(x) = eˣ + 3

And the range of the new function will be (3, ∞).

Therefore , Option A will be the correct answer.

To know more about Range

https://brainly.com/question/17553524

#SPJ5

Rasheed has an account balance of
-$125.56. Does Rasheed owe the bank more or less than $125?

Answers

Answer:

Yes, He Owes More

Step-by-step explanation:

he or she owes the bank more money because he is in the negative range, so that means whenever you're in the negative range have to pay someone something (which basically means debt)

____________________________________________________________

Hope this helps!

Please give brainlist!

Answer:

yes rasheed owes more the banck than 125

Step-by-step explanation:

raseed owe the bank 125.56. wich is .56 more than 125

If x=7 then which answers would I circle? A. X + 7 = 17 b. 7 = 17 - x c. 70 = 10x d. X/35 = 5 e. 15x = 105

Answers

Answer:

C. 70 = 10x

E. 15x = 105

Step-by-step explanation:

x = 7

Using method of elimination;

A. X + 7 = 17

Substituting the value of x;

7 + 7 ≠ 17 (Incorrect option)

B. 7 = 17 - x

Substituting the value of x;

7 ≠ 17 - 7  (Incorrect option)

C. 70 = 10x

Substituting the value of x;

70 = 10 * 7  (Correct option)

D. X/35 = 5

Substituting the value of x;

7 / 35 ≠ 5  (Incorrect option)

E. 15x = 105

Substituting the value of x;

15 * 7 = 105  (Correct option)

Solve for t. You must write your answer in fully simplified form.
−19= 7t

Answers

Answer: dot know srry

Step-by-step explanation:

Cara has one bag of toys that weighs 2 pounds and another that weighs 48
ounces. How many ounces of toys does Cara have?

Answers

Answer:

80 ounces

Step-by-step explanation:

one pound is equal to 16 ounces.

If we convert both pounds to ounces, we get 32. Simply add 32 to 28 to get your answer.

help me pls theheheh

Answers

Answer:

108 schools

Step-by-step explanation:

PLEAS HELP ILL GIVE BRAINLIEST
PLEASE SHOW WORK

Answers

Answer: its A

Step-by-step explanation:

Answer:

the answer is

13 / 40 = 32.5%

A local frame shop charges $5 per foot for the wood to make a frame. You want to have an 8 inch by 10 inch picture frame. How much will it cost?

Answers

Answer:15$

Step-by-step explanation:

Martha use 1 piece of paper and 1 piece of ribbon to make kites. The paper comes in packs of 3 pieces and the ribbon comes in packs of 4 pieces. What is the least number of kites Martha can make without having supplies left over?
ANSWER QUICKKKKKK

Answers

the answer should be 12 kites

one more question, sorry can someone please help?​

Answers

Answer:B

Step-by-step explanation:

Honestly when I did the math I got closest to b so I think it's B hope his helps

The total number of hours tea that Trent has practiced his guitar after D days is modeled by the equation shown t=3d

Answers

Answer:

The complete table is

d               t

1               3

3              9

5              15

Step-by-step explanation:

Here is the correct and complete question:

The total number of hours, t, that Trent has practiced his guitar after d days is modeled by the equation t = 3d.

Complete the table below.

d               t

1

3

               15

Step-by-step explanation:

For the first space, we are to determine the value of t when d is 1

From the given equation, t = 3d, put d = 1 and determine t

t = 3d

∴ t = 3(1) = 3×1

t = 3

For the second space , we are to determine the value of t when d is 3

Put d = 3 in the equation to determine t

t = 3d

∴ t= 3(3) = 3×3

t = 9

For the third space, we are to determine the value of d when t is 15.

Put t = 15 in the equation and then find d

t = 3d

∴ 15 = 3d

Divide both sides by 3

15/3 = 3d/3

5 = d

∴ d = 5  

!!please help me questions is at the bottom!!!

Answers

The cylinder is 11 cubic meters greater than the volume of the cone.

 WHO KNOWS FUNCTIONS AND ALL THAT PLZZZ HELP ME ASAP I REALLY NEED IT PLZZ

Answers

the last set because a function can’t have the same two x values

A cone has radius 9 and a height 12. A frustum of this cone has height 4.
What are the radii of the bases of the frustum?
What is the slant height of the frustum?
What is the lateral area of the frustum?

(If you waste an answer it will be removed so don't try and get "Free" points.)

Answers

Answer:

Part A)

The lower base has a radius of 9 units, and the upper base has a radius of 6 units.

Part B)

5 units.

Part C)

75π or about 235.62 square units.

Step-by-step explanation:

Please refer to the figure below.

The cone has a radius of 9 units and a total height of 12 units.

A frustum of the cone has a height of 4 units.

Part A)

The lower radius of the frustum will simply be 9 units.

For the upper radius, we will use the properties of similar triangles. We will compare the smaller upper triangle to the overall larger triangle. This yields:

[tex]\displaystyle \frac{12}{8}=\frac{9}{x}[/tex]

Solve for x. Simplify:

[tex]\displaystyle \frac{3}{2}=\frac{9}{x}[/tex]

Cross-multiply:

[tex]18=3x\Rightarrow x=6[/tex]

The upper base has a radius of 6 units.

Part B)

We can first find the total slant height of the entire cone. By using the Pythagorean Theorem, this yields that the total slant height is:

[tex]SH^2=12^2+9^2[/tex]

Simplify:

[tex]SH^2=225\Rightarrow SH=15\text{ units}[/tex]

Now, find the slant height of the upper cone:

[tex](SH_\text{cone})^2=8^2+6^2=100[/tex]

So:

[tex]SH_\text{cone}=10[/tex]

Then the slant height of the frustum will be the cone subtracted from the total. Thus:

[tex]SH_{\text{frustum}}=15-10=5\text{ units}[/tex]

Part C)

We can first find the lateral area of the entire cone. The lateral area is given by:

[tex]LA=\pi r\ell[/tex]

The lateral area of the entire cone will be:

[tex]LA=\pi (9)(15)=135\pi[/tex]

The lateral area of the upper cone will be:

[tex]LA_\text{cone}=\pi(6)(10)=60\pi[/tex]

Then the lateral area of the frustum is:

[tex]LA_\text{frustum}=135\pi-60\pi =75\pi\text{ units}^2\approx235.62\text{ units}^2[/tex]

A store sells card games for $6.95 each. Board games sell for $15.00 each. Monica
is buying 3 card games and x number of board games. Which equation can be
used to find y, the total price Monica must pay in dollars?

Answers

Answer:

20.85+x=y

Step-by-step explanation:

Since Monica is buying 3 card games, we multiply 3*6.95. Then, we have 20.85. Then, we will add x to 20.85 to find y. So final answer is :

20.85+x=y

HOPE THIS HELPS


If 80 students were surveyed, how many
preferred math?

Answers

Answer: 12 students preferred math

Step-by-step explanation:

Take this equation

80(n)

n will equal (0.15) for the 15% surveyed who preferred math

80(0.15)

12

what’s the answer? (picture)

Answers

I think it would be B i’m sorry if it’s wrong have a good day!

Which set of numbers cannot represent the lengths of the sides of a triangle?

1) 7,5,6
2) 7,18,11
3) 6,8,11
4) 9,1219

Answers

Answer:

2) 7,18,11

Step-by-step explanation:

Triangle inequality:

Sum of side lengths of any two sides must be greater than the third side

7 + 11 = 18, this is the only exception

Option 2

Answer:

2) 7,18,11

Step-by-step explanation:

Because it is the "Correct Answer"

Omar is planning to buy some new baseball shoes. He has already saved $22.50 The shoes cost at least $38 dollars. He writes an inequality to determine how much more he will need to save

Answers

Answer:

At least $15.50

Step-by-step explanation:

Omar is planning to buy some new baseball shoes. He has already saved $22.50

The shoes cost at least 38 dollars.

At least means, greater than or equal to which is represented by the sign

The inequality is given as

22.50 + x ≥ 38

x ≥ 38 - 22.50

x ≥ 15.5

Therefore, he would need to save at least $15.50

In 2 years Peter will be twice as old as his sister Eve. The sum of their present age is 26.

i need answers asap thank youuu!!

Answers

Answer:

Eve is 8, 10 in 2 years and peter is 18, 20 in two years

Step-by-step explanation:

26/2=13

Eve = 13    Peter=13

Then just keep subtracting from eve then adding that on to peter. Then add two years everytime for the age they will be in two years

And yh it is basically trial and error

sorry if you get the explanation

I NEED ANSWERS ASAP!!! PLEASE

Answers

Answer:

10 in by 48 in

Step-by-step explanation:

The volume (V) of a rectangular solid is calculated as

V = Ah ( A is the area of the base and h the height )

Here h = 3 and V = 1440 , then

3A = 1440 ( divide both sides by 3 )

A = 480 in²

The area of a rectangle = length × breadth

From the give options

10 × 48 = 480 ← is the only option

Joshua buys a bunch of watermelons for $7.75. He plans on feeding his friends watermelon as a snack, and there will be 15 people to feed. What is the unit price for one serving of watermelon? The unit price for 1 serving of watermelon is (round to the hundredths place):

Answers

Answer:

$0.52

Step-by-step explanation:

To find the unit cost of one serving of watermelon, divide the price of the bunch of watermelons by the number of people to be fed

unit price = price of the bunch / total people to be fed

$7.75 / 15 = $0.52

Can someone help me find the measure of each angle in the diagram?

Answers

Answer:

we cant read the numbers cuz theyre too small

Find the find the area and the circumference of the circle round your answer to the nearest hundredth ​

Answers

Area = pi * r^2
Area = pi * 12^2 = 452.39 square units
Circumference = 2(pi) * r
2 * pi * 12 = 75.40 units

Answer:

area =  452.39 square units

circumference = 75.40 square units

Step-by-step explanation:

area = [tex]\pi r^{2}[/tex]

r = 12

452.389

circumference = [tex]\pi *d[/tex]

d = 2r

r = 12

d = 24

75.398

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