There are 18 girls in Mr. Brimley's math class. If 40% of the students are girls, what is the best estimation for the number of boys in the class?

Answers

Answer 1

Answer:

30

Step-by-step explanation:

This is an easy one.

So, we know that 40% of the class is girls. We would need to use the other 60% as 60% of the class is boys and we would need to divide.

18/0.6=30

Therefore your answer is 30.

Hope this helps.

Answer 2

Answer:

20

Step-by-step explanation:

It is 40 percent ( given)

18/2=9

9×5=40 (100%)

Girls- 18( given)

Boys- 40-18=22

Rounded off-20


Related Questions

Georgia is able to save $58 a week
from her earnings for babysitting her
neighbor's daughter. How much money
is Georgia able to save in 3 months?

Answers

Answer:

She will get $696 from babysitting in 3 months.

Step-by-step explanation:

58x4 = 232. 232x3= $696.

Answer:

696

Step-by-step explanation:

Please, help me!!

My answer is
g: 43
h: 137
m: 49
K: 31

But I'm not sure.

Answers

Answer:

G is correct

H is correct

M is correct

K is 131

Step-by-step explanation:

Angles in a straight line add up to 180 degrees

Answer:

g: 43

h: 137

m: 49

K: 131

Step-by-step explanation:

i got it right

A recipe calls for 1 1/2 cups of flour for 1 dozen of cookies. How much flour is needed for 32 cookies?

Answers

Answer :4 cups!

Explanation: 1 1/2 is = to 12 so 1/2 is equal to 4. 1 then is equal to 8 and you multiply by 4 to get 32.

answer asap ty.!

Thanks

Answers

Answer:

x=0

Step-by-step explanation:

5-9+3x = -10+6

-4+3x = -4

+4 .       +4 (Both sides)

3x = 0

/3    /3 . (divide both sides by 3)

x=0

10 Which shows the factored form of x2 - 12x - 45?
А
(x + 3)(x – 15)
B
(x - 3)(x - 15)
c
(x + 3)(x + 15)
(x - 3)(x + 15)

Answers

Answer:

The answer is (x+3)(x-15)

the answer is (x+13)(x-15) basically A

Solve expression completely.
64°
O
1
O 64
O Unknown

Answers

Answer:

b

Step-by-step explanation:

Is the given value a solution to the equation? 4(n) - 3 = -2(n) + 9 n=2

Answers

Answer:

Yes!

The solution to the equation is n = 2

Step-by-step explanation:

Given the equation

[tex]4\left(n\right)-3=-2\left(n\right)+9[/tex]

remove the parentheses

[tex]4n-3=-2n+9[/tex]

Add 3 to both sides

[tex]4n-3+3=-2n+9+3[/tex]

Simplify

[tex]4n=-2n+12[/tex]

Add 2n to both sides

[tex]4n+2n=-2n+12+2n[/tex]

Simplify

[tex]6n=12[/tex]

Divide both sides by 6

[tex]\frac{6n}{6}=\frac{12}{6}[/tex]

Simplify

[tex]n=2[/tex]

Therefore, the value of n = 2.

Hence,

Yes!

The solution to the equation is n = 2

i need help with my math problems

Answers

Answer:

Step-by-step explanation:

X       Y                    X           Y    

0       3                     0           5

1        7                     1              8

2        11                    2           11

3        15                   3          14

4         19                   4            17  

Alexa is making a bracelet using beads. She uses 1 red bead for every 5 silver beads. If she uses a total of 20 silver beads, how many red beads does she use? Tingsug can you please answer this for me? pls

Answers

Answer:

4 red beads

Step-by-step explanation:

Question 5 Which of these expressions is equivalent to z+z+z+z?



Answers

Answer:

well, there is no image but it could be..

4z,z+3z,2z+2z

HELP ME OUT PLEASE!!!

Answers

Answer:

So the scale factor would be the length of the new rectangle divided by the length of the corresponding side for the original rectangle. So the scale factor is 1/2. Note: If you're going from a bigger shape to a smaller one, you know that the scale factor must be less than 1.

Step-by-step explanation:

how do you graph x+ 4

Answers

Your starting point could be (0,4) whatever x-coordinate you plot u just add 4 to the y-coordinate

The length of a rectangle is 3 inches less than three times its width. The perimeter of the rectangle is 34 inches. Find the dimensions of the rectangle

Answers

Given:

The length of a rectangle is 3 inches less than three times its width.

The perimeter of the rectangle is 34 inches.

To find:

The dimensions of the rectangle.

Solution:

Let x be the width of the rectangle. Then, the length of a rectangle is 3 inches less than three times its width.

Length of the rectangle = 3x-3

Now, perimeter of the rectangle is

[tex]Perimeter=2(Length + Width)[/tex]

[tex]Perimeter=2(3x-3+x)[/tex]

The perimeter of the rectangle is 34 inches.

[tex]34=2(4x-3)[/tex]

[tex]34=8x-6[/tex]

[tex]34+6=8x[/tex]

[tex]40=8x[/tex]

Divide both sides by 8.

[tex]\dfrac{40}{8}=x[/tex]

[tex]5=x[/tex]

The value of x is 5. So, width of the rectangle is 5 inches.

[tex]Length=3x-3[/tex]

[tex]Length=3(5)-3[/tex]

[tex]Length=15-3[/tex]

[tex]Length=12[/tex]

Therefore, the length of the rectangle is 12 inches and the width of the rectangle is 5 inches.

what is a 2 3/8 divided by 1 and 3/4 ​

Answers

Answer: 19/14

Explanation:

2 3/8 = 19/8

1 3/4 = 7/4

19/8 divide 7/4
= 19/8 x 4/7
= 19/14

please help me on math

Answers

Answer:

The correct answer is 4

Step-by-step explanation:

hope this helps

I think the answer is 4

6−3+4x+1= in one solution

Answers

Answer:

4x + 4

Step-by-step explanation:

1. 6 - 3 = 3 + 1 = 4

2. You keep the 4x.

3. So 6−3+4x+1= 4x + 4.

Find the missing value pls help need an answer ASAP

Answers

Answer:

-7

Step-by-step explanation:

-7 + 5 = -2

Can u mark me brainly pleasee???

Answer:

-7

Step-by-step explanation:

give brainliest jayfeather friend me

Express $0.\overline{5}$ as a common fraction in lowest terms.

Answers

Answer:  5/9

=======================================================

Explanation:

[tex]0.\overline{5}[/tex] means that the 5's go on forever because of that horizontal bar over top. So we can write it as [tex]0.\overline{5} = 0.55555\ldots[/tex]

The three dots indicate it goes on forever following that pattern.

Let

x = 0.55555....

Multiply both sides by 10 to move the decimal point 1 spot to the right

10x = 5.55555....

Notice how both x and 10x involve a decimal number such that we have a string of 5's going on forever. If we subtract the two equations, then 10x-x becomes 9x, while the (5.55555....) - (0.55555....) simplifies to 5. The decimal portions cancel out when we subtract since they line up perfectly. We're effectively subtracting 5-0 when we cross off the decimal portions.

After those subtractions, we're left with 9x = 5 which solves to x = 5/9 when you divide both sides by 9.

Use of a calculator should show that 5/9 = 0.555555.... to help confirm the answer. Your calculator may show the last digit to be a 6 instead of a 5, but this is due to rounding. Ideally you should have a string of infinitely many 5's, but the calculator can only how so many digits.

Rewrite the mixed number 2 4/5 as a improper fraction

Answers

Answer:

I'm pretty sure its 14/5

solve the triangle. round decimal answers to the nearest 10th.

Answers

Answer:

Step-by-step explanation:

m∠A=132°

b≈25.5

c≈18.7

Your soccer team has won 9 games out of 12 games. You lost 3 out of the 12 games. What is the relative frequency of winning a game? Leave your answer as a percent.
Group of answer choices

75%

25%

1.3%

90%

Answers

Answer:

75%

Step-by-step explanation:

9 ÷ 12 = 0.75

0.75 = 75%

What is f /4 − 24 = −28

Answers

Answer: i assume you're looking for F, if so F = -16

Step-by-step explanation:

you would start by adding +24 to each side of the equation, giving you f/4 = -4

then, you would multiply each side of the equation by 4, giving you f = -16

which graph represents the solution for the following inequality

c < -2​

Answers

Answer:

I am pretty confident that the answer is the last one

Step-by-step explanation:

I'm not really sure how to explain though lol.

Hope  this helps!

Kellie is purchasing the package of dog food shown (dog kibble 7pounds) how many 8 ounce servings can she feed her dog

Answers

Answer:

14 servings

Step-by-step explanation:

Step 1

We convert 7 pounds to ounces

0.0625 pound = 1 ounce

7 pounds = x

Cross Multiply

0.0625x = 7

x = 7/0.0625

x = 112 ounces

Step 2

The number of 8 ounce servings she can give to her dog is calculated as:

8 ounces = 1 serving

112 ounces = x servings

Cross Multiply

8 × x = 112 × 1

8x = 112

x = 112/8

x = 14 servings

Therefore, the number of 8 ounce servings she can feed her dog is 14

The ratio of the three angles of a triangle is 2:3:5. What are the three angles of the triangle?​

Answers

FIRST STEP:

2x + 3x + 5x = 180

10x = 180

x = 18

SECOND STEP:

2*18 = 36

3*18 = 54

5*18 = 90

36:54:90

PLZ MARK AS BRAINLIEST

Answer:

let ratio be 2x,3xand 5x

Step-by-step explanation:

2x+3x+5x=180(sum of interior angle of triangle)

10x=180

x=180/10=18

:.required angle

2x=2×18=36

3x=3×18=54

5x=5×18=90

A shop has a sale.
All items are 40% off.
A pair of jeans now cost £24.
How much did they cost before the sale

Answers

The jeans cost £40 before the sale. Hope this helps. Let me know if you need anything else.

Find the sequence and fill in the blanks

(2, 3), (4, 6), (6, 9), (8, 12) ....
The 8th group is (__, __)

Answers

Step-by-step explanation:

(8×2,8×3)

(16, 24)

............

Solve expression completely.
4-3
O 1/64
O
-64
O 1/16
O
64

Answers

Answer:

1/ 64

Step-by-step explanation:

1 / 4³ = 1/ 64

hope it helps!

Is it true that when you find 10% of a number, that you are finding 1/10 of that number or dividing (divvy) the number by 10. This is the same as moving the decimal place by one.

Answers

Answer:

Yes this is true

Step-by-step explanation:

when ur moving right of the decimal point it goes tenths hundredths and thousandths so yes this is true PLEASE MARK BRAINLIEST ;C

-2(7 – n) + 4
What is the answer to this any body know it??????????

Answers

2x-10 is the answerr

Answer:

2n+10

Step-by-step explanation:

you just distribute the -2 and you get -14+2n+4 and then add and you'll get 2n+10

if you are solving for the variable n then you would want your equation like this 2n+10=0

next you would put the 10 on the other side of the equation and have 2n=-10

finally you would divide by 2 and get n=-5

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