In a class of 30 children, 60% of the children are girls. How many of the girls are there in class? 18

Answers

Answer 1

You are correct!

20 Characters


Related Questions

Find the indicated Z score. The graph depicts the standard normal distribution with mean 0 And the standard deviation 1

The indicated Z score is what?

Answers

The indicated Z score according to the given graph will be z < -0.1635

The normal distribution has a mean-values between 0 and 1.

From the graph, we can see that zero is placed in the middle and the shaded portion is towards the left side of zero.

According to the number line, the numbers to the left-hand side of zero are always negative, hence the indicated Z score according to the given graph will be z < -0.1635

Learn more here: https://brainly.com/question/24213960

(-11[(3-5 to the 2nd power divided by {-2]+5

Answers

Answer:

For each object, choose an appropriate scale for a drawing that fits on a regular sheet of paper. Not all of the scales on the list will be used.

Step-by-step explanation:

4739tfghfdcndekru

5tyenbvjfwfyqe

8ghdgrgur

(First correct answers get brainliest or a lot of points)
0.5 divided by -0.667 times 0.75 minus 0.8
Good luck!

Answers

Answer:

I believe that it is −1.3622188906

The arithmetic mean of ten numbers is -10. If the sum of six of the numbers is 100, what is the arithmetic mean of the other 4?

Answers

Answer:

56

Step-by-step explanation:

Arithmetic mean is simply the sum of the all the number present divide by the total number.

From the question, we obtained the following information:

The arithmetic mean = 5.6

Total number present = 10

Sum of the numbers =?

Arithmetic mean = sum of the numbers / total number

Sum of the numbers = arithmetic mean x total number

Sum of the numbers = 5.6 x 10 = 56

The sum of the other four numbers is equivalent to -200.

What is a mathematical function, equation and expression?            function : In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.expression : A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.equation : A mathematical equation is used to equate two expressions.

Given is that the arithmetic mean of ten numbers is -10. The sum of six of the numbers is 100.

We can write -

{a + b + c + d + e + f + g + h + i + j}/10= - 10

{a + b + c + d + e + f + g + h + i + j} = - 10 x 10

{a + b + c + d + e + f + g + h + i + j} = - 100    .... Eq{1}

and

{a + b + c + d + e + f} = 100             .... Eq{2}

We can write Eq{1} as -

{a + b + c + d + e + f} + {g + h + i + j} = - 100

100 + {g + h + i + j} = - 100

{g + h + i + j} = - 100 - 100

{g + h + i + j} = - 200

Therefore, the sum of the other four numbers is equivalent to -200.

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A worker makes 220 for 8 hours of work. At this rate, how much does the worker make per hour

Answers

Answer:

22.5

Step-by-step explanation:

8hrs=220

1hr=220÷8

1hr=22.5

Worker make per hour will be "22.5".

According to the question,

The worker makes,

[tex]8 \ hours = 220[/tex]

then,

Per hour, worker will make,

→ [tex]1 \ hour = \frac{220}{8}[/tex]

By applying division, we get

→ [tex]1 \ hour = 22.5[/tex]  

Thus the solution above is appropriate.

Learn more about interest rate here:

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Irrational numbers cannot be written as a ratio…irrational means not rational. All fractions of integers are Rational.

Answers

with the exception of perfect squares, all square root of whole numbers are irrational, e.g. √5

how about this one:

2.34334333433334.... I am increasing the number of 3s each time, thus

creating a decimal which never ends and never repeats.

or

12.3456789101112131415.... can you see what I am doing?

will it ever end? will it ever repeat?

Help me please please ..........

Answers

Answer:

D

do you rlly need an explanation?

Answer:

b-16/25

Step-by-step explanation:

cause 0.64 would be 64/100 but I can be simplified down to 32/50 but that also could be simplified down to 16/25 which would be your answer because it can not be simplified any more

On a map, 1 inch equals 25 miles if two cities are 8 inches apart on the map how far are they actually apart ?

Answers

Answer:

200 mi

Step-by-step explanation:

8 times 25 mi = 200 mi

PLEEEEEEEEEAAAse mark branliest!!!

A man has 6x sheep 5y goats. He sell 3x sheep and 2y goats. How many animals has he left?​

Answers

Answer:

[tex]6x - 3x = 3x \: sheeps\\ 5y - 2y = 3y \: goats \\ 3x + 3y \: animals \: left[/tex]

Alice needs to mix 4 cups of baking soda with 3 cups of water to make a cleaning solution. How many cups of baking soda are needed for each cup of water?

Answers

Answer:

1.33

Step-by-step explanation:

Divide 3 by 3, making it one.  Now divide 4 by 3, making it 1.33.

Guys i need help evaluating this number, please help

Answers

Answer:

[tex] {12}^{2} - 3(4( \frac{1}{4} ) - ( {1}^{8} )) \\ = 144 - 3(1 - 1) = 144[/tex]

Answer:

144

Step-by-step explanation:

4(1/4) = 1

1^8 = 1

[1-1]= 0

3*0 = 0

12^2= 144

144-0= 144

Combine Like Terms:

12 + 16 + 9x^2

Answers

28+9x^2

12+16=28. This is the only adding you have to do since unlike 9x there is no variable or other terms so you leave the 9x^2 alone

PLEASE HELP!! Only answer if correct.

Answers

Answer:

top -55

bottom 325

Step-by-step explanation:

Two buses leave a station at the same time and travel in opposite directions. One bus travels 17 mi/h slower than the other. If the two buses are 345 miles apart after 3 hours, what is the rate of each bus? Please help!

Answers

Answer:

...,....................

Answer:

one bus travels at 66mi/hr and the other bus at 49mi/hr

Step-by-step explanation:

Let's assume one bus, A is traveling at x mi/hr and the other bus, B at x+17 mi/hr

after 3hrs, bus A will have covered 3x miles and bus B will have covered 3(x+17) miles.

the buses are 345 mils apart but from the same origin,

meaning Distance of A + Distance of B =345 miles

3x+3(x+17)=345

x=49

for bus A

and x+17=66 for bus B

Find the perimeter of the polygon with the given vertices. C(4, -1), D(4,−5), E(2,−3)

Answers

Answer:

8 units

Step-by-step explanation:

find the distance of the lines through coordinates given

distance formula: [tex]\sqrt{(x_{1}-x_{2})+(y_{1} -y_{2} ) }[/tex]

i) CD=[tex]\sqrt{(4-4)^2 +(-1+5)^2}[/tex]

  CD=[tex]\sqrt{0+4^2}[/tex]

  CD=4 units

ii) DE=[tex]\sqrt{(4-2)^{2}+(-5+3)^2 }[/tex]

 DE=[tex]\sqrt{(2)^2+(-2)^2}[/tex]

 DE=[tex]\sqrt{8}[/tex]

 DE= 2 units

iii) ED=[tex]\sqrt{(2-4)^2+(-3+1)^2}[/tex]

   ED=[tex]\sqrt{(-2)^2+(-2)^2}[/tex]

   ED=[tex]\sqrt{8}[/tex]

   ED= 2 units

perimeter of polygon= 2 units+ 2 units+ 4 units

                                  =8 units

Referring to the figure, the spinner is divided
into equal parts. What is the probability that the
spinner stops on a number whose ones digit is 2?

Answers

Answer:

1/6 is the probability.

There are only 2 out of 12 options that have a 2 at the one's place(2/12), which can be simplified into 1/6

Mark deposit $ 200 into an account that pays an interest rate 3.5% compounded annually. He doesn't add or remove from his account for 4 years how much money will markbhave in 4 years

Answers

Answer:

30,012.5

Step-by-step explanation:

We power the number by itself for the past years so in this it will be 3.5  powered by itself four times equaling 150.0625 multiplied by the first deposit which is 200 so 200*150.0625= 30,012.5

Hope this helps

hello there

I am looking for help here pls

Answers

Answer:

b

Step-by-step explanation:

I'm not sure how to explain this if it is correct plz mark as brainiest

Reduce the fraction 15/20 to lowest term. ​

Answers

Answer:

3/4

Step-by-step explanation:

15/20 dived by 5 is 3/4

Find the area and perimeter.
5.6 cm

Answers

Answer:

A= 5.6 x 5.6 = 31.36

P= 5.6 × 4 = 22.4

Step-by-step explanation:

to find the area of a square, just take the length of 1 side and square it (A= length^ 2)

to find the perimeter of a square multiply length by 4 sides.

*these formulas only hold true for squares bc the length of each side is the same.

-5/2x-19/10

Plss Answer this in fraction form, and simplified, I can't figure it out!

Answers

Answer:

= -25x-19/10

Step-by-step explanation:

To complete a job, a plumber needs 10 sections of pipe that are 24.125 inches in length. How much pipe is needed?

Answers

Answer:

241.25

Step-by-step explanation:

24.125 x 10= 241.25

Answer:

That would be a total of 241 and a quarter inches of pipe which is equal to 20.10417 feet of pipe.

Step-by-step explanation:

24.125x10=241.25/12=20.104166666

Because there are 12 inches in a foot.

Lucy has read 500 pages of her summer reading assesment, and Angie has read 460 pages. Lucy has reads 10 per week for the remainder of the summer, and Angie reads 20 pages per week for the remainder of the summer. Write and solve an equation to show how many weeks it will take before the girls have read the same amount of pages.​

Answers

Answer:

It would take four more weeks before the two read the same number of pages.

Step-by-step explanation:

Let [tex]x[/tex] denote the number of extra weeks required before the two read the same number of pages.

Express the number of pages each would read between now and [tex]x[/tex] weeks into the future:

Lucy reads [tex]10[/tex] pages per week. Thus, she would have read [tex]10\, x[/tex] additional pages after [tex]x[/tex] more weeks.

Angie reads [tex]20[/tex] pages per week. She would've read [tex]20\, x[/tex] additional pages after [tex]x[/tex] more weeks.

It is also given that Lucy has already read [tex]500[/tex] pages. After reading [tex]10\, x[/tex] pages in the upcoming [tex]x[/tex] weeks, Lucy would have read a total of [tex](500 + 10\, x)[/tex] pages.

Likewise, after reading [tex]20\, x[/tex] pages in the upcoming [tex]x[/tex] weeks, Angie would have read a total of [tex](460 + 20\, x)[/tex] pages.

It is assumed that the two would have read the same number of pages after these [tex]x[/tex] more weeks. In other words:

[tex]500 + 10\, x = 460 + 20\, x[/tex].

Solve this equation for [tex]x[/tex]:

[tex]x = 4[/tex].

In other words, Lucy and Angie would have read the same number of pages after four more weeks.

HELP!! ASAP
A graphic designer makes a sketch for an image that will appear on a poster. The width of the sketch is 14 in. She figures that it should be enlarged to 220% to make the final image. How wide will the final image be?

Answers

Answer:

220

Step-by-step explanation:

The final image will be 30.8 inches!

******Please help me please help me help please help*****

Answers

Answer:

5 would be the dependent variable.

Step-by-step explanation:

5 would be the dependent variable because that is the number that is that depends on the others in the equation for it to be the final answer.

Answer:

180

Step-by-step explanation:

k = 72/2=36

y =kx

y =36(5)

y = 180

for the function below find the following:

f(x)=25x^2-36

a. the zeros x=?

b. the x & y intercepts
(x,y) = ( )
(x,y) = ( )

c. the y intercept of the graph
(x,y) = ( )

Answers

Answer:

a. (-1.2,0) (1.2,0)

b. (-1.2,0) (1.2,0)(0,-36)

c. (0,-36)

Andrea saves 65 each day.if this is 25% of hair daily allowance, how much is her daily allowance

Answers

25/100 = x/65

100x = 1625

x = $16.25

$16.25 is her daily allowance

Solve the inequality.(Show all your work)
z+6>3 or 2z<-12

Answers

z+6>3 minus 6 from both sides

z>-3

2z<-12 divide both sides by 2

z<-6

Then substitute the z values into one inequality

-3<z<-6

What is the quotient of 3 and 1/5?

Answers

Answer:15

Step-by-step explanation: use a calculator

an item on sale costs 60% of the original price. If the original price. If the original price was $40, what is the sale price?

Answers

Answer:  $24

Step-by-step explanation:

40 * .60 = $24

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