Forty Percent of the thirty students in the class are boys. How many girls are in the class? PLEASE EXPLAIN!!!​

Answers

Answer 1

Answer:

18

Step-by-step explanation:

If forty percent of the class is boys, then sixty percent of the class is girls. So that means you must multiply .6 by 30 which will give you your answer of 18. .6 is a decimal form of 60%

Answer 2

The number of girls in the class is 60% or 18 girls

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the total number of girls in the class be = G

Now , let the total number of boys in the class be = B

The total number of students in the class = S

The value of S = 30 students

The percentage of boys in the class = 40 %

So , the equation will be

The number of boys in the class = percentage of boys in the class x total number of students in the class

Substituting the values in the equation , we get

The number of boys in the class = ( 40/100 ) x 30

The number of boys in the class = 30 x 0.4

The number of boys in the class = 12 boys

So , the number of girls in the class = total number of students in the class - number of boys in the class

Substituting the values in the equation , we get

The number of girls in the class = 30 - 12

The number of girls in the class = 18 girls

Therefore , the value of G is 18 girls

Hence , The number of girls in the class is 60% or 18 girls

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Related Questions

I don't understand (I'm getting a tutor)​

Answers

Step-by-step explanation:

draw the last one by yourself.

im sure you can do it buddy.

good luck♥️♥️♥️♥️♥️.

Are Figures A and B congruent? Explain your reasoning.

Answers

Answer:

no

Step-by-step explanation:

figure b is wider than figure a

Answer:

no

Step-by-step explanation:

figure b is wider than figure a

3to the 4 power times 2to the Third power

Answers

Answer:

648

Step-by-step explanation:

[tex]3^4 \cdot 2^3 = 3 \cdot 3 \cdot 3 \cdot 3 \cdot 2 \cdot 2 \cdot 2 = 81 \cdot 8 = 648[/tex]

Answer:

648

Step-by-step explanation:

Step 1:

First, make an equation:

3⁴ · 2³

Step 2:

Then, simplify both factors:

3⁴ = 81

2³ = 8

Step 3:

Finally, multiply the numbers together:

81 · 8

And you will get 648.

find solution and show work for: (3.4^17)4

Answers

Answer:

231.2

Step-by-step explanation:

first multiply 34 and 17 which will give you 578. Then put the decimal after the 7 because you only have one decimal in the tenths place: 57.8. Then multiply 578 by 4: 2312. Then put the decimal after the 1 to get 231.2

Enter the correct answer in the box. What is the standard form polynomial that represents this product?
(-2m3 + 3m2 - m)(4m2 + m - 5)​

Answers

Answer: -8m^5+10m^4+9m^3-16m^2+5m

Step-by-step explanation:

I had this question on a recent test and got it right

Hope this helps! :)

Answer:

The correct answer is:

-8m^5+10m^4+9m^3-16m^2+5m

Step-by-step explanation:

I got it right on the Edmentum test.

How would a line with the fraction (below the graph) look like on a graph. How do you know? PLEASE HELP!!! LOTS OF POINTS!!!

Answers

Answer:the line would be going down because - 5/3 is negative

Step-by-step explanation:the line would have a slope of - 5/3 so 5 down 3 right

Find the greatest common factor of 20 and 32.
A. 11
B. 8
C. 4
D. 2

Answers

Answer:

C

Step-by-step explanation:

Find the equation of the line in slope-intercept form. c Slope is 3/5 and (0, −2)

Answers

Answer:

y=3/5x-2

Step-by-step explanation:

The slope is already given, 3/5 so just plug it in to the base formula y=mx+b

And the coordinate (0,-2) is your y-intercept. So plug in -2 to b

Therefore y=3/5x-2

Alejandra drove from Michigan to Colorado to visit her friend. The speed limit on the highway is 70 miles/hour. If Alejandra’s combined driving time for the trip was 14 hours, how many miles did Alejandra drive?
PLease help me!

Answers

She drove 980 miles because

1 hour = 70 miles

14 hours = 980 miles

You’d find the amount of hours by multiplying the miles and the hours

Hope this helped :)

Answer:

13720 i think

Step-by-step explanation:

Describe what needs to be done to isolate the variable in this equation

-7t = 5.6

A. add 7
B. subtract 7
C. multiply by 7
D.Divide by 7

Answers

the answer is D. Divide by 7

Round 624.914 to the nearest tenth.

Answers

Answer:

624.9

Step-by-step explanation:

Answer:

625 i think

Step-by-step explanation:

if I have a garden that's 10 yards and I want to grow a plant that's 2.5 yards how many of that can I plant

Answers

Answer:

4

Step-by-step explanation:

2.5y x 4 = 10y

Hope This Helps

<3

Answer: 4 plants.

Step-by-step explanation:

In the case that these measurements are of length, the plant being 2.5 yards and the total length of the garden area being 10 yards, the most simple way to solve this is to find how many 2.5 yard sections of this garden are in the given plot.

[tex]10/2.5 =4[/tex]

When 10 is divided by 2.5 you receive the answer "4". You can fit 4 plants within the garden. 2.5 x 2 is 5, and 5 x 2 is 10. 2 x 2, therefore, would give you the answer 4.

I hope this explanation helped you understand the question and the answer better.

How do I simplify (-4x^2+2x-3)+(7-2x^2+x)???

Answers

Answer: -6x^2 + 3x + 4

Step-by-step explanation:

2. 1. POINT A HAS COORDINATES (4,6) AND POINT O IS AT THE ORIGIN. FIND THE DISTANCE FROM O TO A. A 6​

Answers

Answer:

√52 units

Step-by-step explanation:

Here we want to find the distance between two points;

O(0,0) and A (4,6)

We can use the distance formula to find this;

D = √(x2-x1)^2 + (y2-y1)^2

D = √(4-0)^2 + (6-0)^2

D = √(16 + 36)

D = √52

So the distance between the two points is √52 units

A player took 12 shots and made 9. what percent did he make

Answers

Answer:

75 percent

Step-by-step explanation:

12 divided by 4 is 3 and three 3s is 75 percent (I know thats confusing but trust me)

The percentage of shots he make is 75%

What is percentage of a number?

The percentage of a number represents a portion or fraction of the whole number expressed as a fraction of 100. It is often used to describe a proportion or rate out of 100.

To calculate the percentage of a number, you typically multiply the number by the desired percentage as a decimal or fraction. The result represents the portion or fraction of the number expressed as a percentage.

The formula for calculating the percentage of a number is:

Percentage = (Number * Percentage Value) / 100.

Substituting the values into the formula above;

percentage = (9 / 12) * 100

percentage = (3/4) * 100

percentage = 0.75 * 100

Percentage = 75%

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Triangles J K L and P Q R are connected at points K and Q. The lengths of sides J K and Q P are congruent and the lengths of sides K L and K R are congruent. Angles L K J and R Q P are congruent.
Which rigid transformations would map ΔJKL onto ΔPQR? Select the three correct answers.

a reflection only
a rotation only
a rotation and a reflection
a translation and a reflection
a translation only

Answers

Answer:

acd

Step-by-step explanation:

edg 2021

A reflection only, a rotation and a reflection and a translation and a reflection are the transformations that would map ΔJKL onto Δ QPR.

What is Congruency

Triangles that are identical in size and shape are said to be congruent triangles. Inferred from this is that the matching sides and angles are equal. Without checking each of the triangles' sides and angles, we can determine whether the two triangles are congruent.

Rule of Congruency:

1- SAS (Side-Angle-Side): Two triangles are congruent if two sides and the included angle of one triangle are equal to the two sides and the included angle of the other triangle.

2- ASA (Angle-Side-Angle): Two triangles are congruent if two triangles and the included side of one triangle are equal to two angles and the included side of the other triangle.

3- AAS (Angle-Angle-Side): Two triangles are congruent if any two pairs of angles and one pair of corresponding sides are equal.

4- SSS (Side-Side-Side): If three sides of one triangle are equal to the three sides of another triangle, then the two triangles are congruent.

5- RHS (Right angle- Hypotenuse-Side): If in two right triangles the hypotenuse and one side of one triangle are equal to the hypotenuse and one side of the other triangle, then the two triangles are congruent.

Since JK= QP
KL= KR
Angle LKJ= Angle QRP

So Δ LKJ ≅ Δ QRP.

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what is the total cost of $16 if you include 5% GST and 20% tip​

Answers

Answer:$20

Step-by-step explanation:

16 divided by 10 = 1.6 (10%)

1.6 times 2 = 3.2 (20%)

16 + 3.2 = 19.2

1.6 divided by 2 = 0.8 (5%)

19.2 + 0.8 = 20$

Let me know if I helped! :D

the product of 5 and a number K is less than 60

Answers

Answer:

11

Step-by-step explanation:

The required inequality would be 5k < 60 which represents the product of 5, and the number K is less than 60.

What is inequality?

Inequality is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are not equal.

To determine the product of 5 and a number K is less than 60

Here the word "Product"  represents multiplication,

So the product of 5 and a number K would be 5×K = 5K

As per the given condition,

So the required inequality would be 5k < 60

Therefore, the required inequality would be 5k < 60 which represents the product of 5, and the number K is less than 60.

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The question seems to be incomplete the correct question would be

Find the inequality if the product of 5 and a number K is less than 60.

What is the slope-intercept form of the linear equation 2x + 3y = 6? Drag and drop the appropriate number, symbol, or variable to each box ​

Answers

Answer:

[tex]y=-\frac{2}{3}x+2[/tex]

Step-by-step explanation:

[tex]2x+3y=6\\\\2x+3y=6\\\\2x-2x+3y=6-2x\\\\3y=6-2x\\\\\frac{3y=6-2x}{3}\\\\ y=2-\frac{2}{3}x\\\\ \boxed{y=-\frac{2}{3}x+2}[/tex]

Hope this helps.

The sun produces 3.9 ⋅ 1033 ergs of radiant energy per second. How many ergs of radiant energy does the sun produce in 1.55 ⋅ 107 seconds?

Answers

Answer:

[tex]E=3.97\times 10^{-27}\ \text{ergs}[/tex]

Step-by-step explanation:

It is given that,

The sun produces [tex]3.9\times 10^{33}\ \text{ergs}[/tex] of radiant energy per second.

We need to find how many ergs of radiant energy does the sun produce in [tex]1.55\times 10^7\ s[/tex].

Energy produced in 1 seconds = [tex]\dfrac{1}{3.9\times 10^{33}}\ \text{ergs}[/tex]

In [tex]1.55\times 10^7\ s[/tex], energy produced is :

[tex]E=\dfrac{1}{3.9\times 10^{33}}\times 1.55\times 10^7\ \text{ergs}\\\\=3.97\times 10^{-27}\ \text{ergs}[/tex]

Hence, the radiant energy produced in 1 second is [tex]3.97\times 10^{-27}\ \text{ergs}[/tex].

Answer:

Part A: It is given that,

The sun produces 3.9x10^33 ergs of radiant energy per second.

We need to find how many ergs of radiant energy does the sun produce in 1.55 x 10^7 s

Energy produced in 1 seconds =  1/3.9 x 10^33 ergs

In 1.55 x 10^7 s energy produced is : E=3.9/10^33 x 1.55 x 10^7 ergs

= 3.97 x 10^-27 ergs  

In conclusion the radiant energy radiated per second 3.97 x 10^27 ergs

Step-by-step explanation:

A cat can run 30 mph at this rate how many minutes would it take a cat to run 1.5 miles

Answers

The cat runs 30 miles in one hour so:

(1.5 / 30) = 0.05 hours or 3 minutes

Answer:

Use a proportion::

time/dist = time/distance

t/1.5 = 1/30

t = 1.5/30

t = 15/300

t = 1/20 = 5/100 = 0.05

So A-0.05 is the final answer

Step-by-step explanation:

ik this was 3 yrs ago

X square +1/2x+blank= 2+ blank

Answers

wait what are the blanks ?

If x+ 9 = 11, then x = 2.

Answers

x would equal 2...

Step-by-step explanation:

true.

Answer:

Yes, you are correct.

Step-by-step explanation.

We will flip the question.

11 - 9 = x

is the same as.

11 - 9 = 2...

________________________________________________________

So... x = 2.


Jaime can spend at most $15 today. He buys a drink and a bag of Takis for
$1.59. If gasoline costs $2.89 per gallon, how many gallons of gasoline can
Jaime afford to put in his car?

Answers

Answer:

Jaime can afford 4.6 gallons of gas in his car

Answer this question... ( ^__^ )

Answers

Answer:

The answer is C

Step-by-step explanation:

what equation represents a line which is perpendicular to x=0

Answers

Answer:

x= 1

Step-by-step explanation:

any equation where x = a single number

The equation of line which is perpendicular to x=0 is y = 7.

What is Line segment?

A line segment is a piece or part of a line having two endpoints.

The condition is given as;

A equation which represents a line which is perpendicular to x=0.

Now,

When we plot x = 0 vertical line , a perpendicular line of x = 0 will simply have a y - value.

Thus, By option;

The equation of line which is perpendicular to x=0 is y = 7.

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The complete question is this;

What equation represents a line which is perpendicular to x=0?

1. y = 7

2. x = 4

3. y = x + 1

4. x = 3y

Help this is due today!

Answers

Answer:

that looks hard! gl :)

Step-by-step explanation:

EF and AB are the same distance apart and AC BD are the same distance apart

PLEASE HELP!!! ILL GIVE BRAINLIEST

Answers

Answer:

*gives help*

:)

Step-by-step explanation:

Write an equation in slope-intercept form for the line with slope 7 and y-intersept -7

Answers

Answer:

y = 7x - 7

Step-by-step explanation:

1st we can look at the meaning of a slope intercept equation

y = mx = b

m = the slope

b = the y-intercept

now when looking at your equation you can plug in your numbers.

y = 7x - 7 is your final answer

High Hopes ^^

Barry-

What is 18.75 divided by 1 and 1/2

Answers

Answer:  12.5

18.75/1 ½ = 12.5

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