at one school there are 81 girls. This corresponds to 45% of all students at the school. how many boys go to school?

Answers

Answer 1
81/.45 =180
180 - 81 = 99 boys

Related Questions

On a coordinate plane, what is the distance between the point at (7, 6) and the point at (7, 9)?

Answers

Answer:

-12

Step-by-step explanation:

6+-9 =-12

5) 8 - 3(2b - 7)
Need help

Answers

Answer:

−6b+29

Step-by-step explanation:

Let's simplify step-by-step.

8−3(2b−7)

Distribute:

=8+(−3)(2b)+(−3)(−7)

=8+−6b+21

Combine Like Terms:

=8+−6b+21

=(−6b)+(8+21)

=−6b+29

have a great day <3

Answer: -6b + 29

Step-by-step explanation:

8 -6b + 21

-6b + 29

Solve the system by substitution.
-2y - 10 = x
- 10x - y = -14

Answers

Answer:

x=2 and y=−6

sorry this is pretty long, I did not know if you needed the steps or not

Step-by-step explanation:

−2y−10=x;−10x−y=−14

Solve−2y−10=x for x

−2y−10=x

−2y−10+−x=x+−x

−x−2y−10=0

−x−2y−10+2y=0+2y

−x−10=2y

−x−10+10=2y+10

−x=2y+10

-x/-1=2y+10/-1

x=−2y−10

Substitute−2y−10 for x in−10x−y=−14

−10x−y=−14

−10(−2y−10)−y=−14

19y+100=−14

19y+100+−100=−14+−100

19y=−114

19y/19=-114/19

y=-6

Substitute−6 for y in x=−2y−10

x=−2y−10

x=(−2)(−6)−10

x= 2

x=2 and y=−6

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

Answers

Answer:

I'm pretty sure its 14/5

AHHHHHH AGAIN!?
so someone helped me understand how to do long division again! ty, i just need to know...

what is this?
ima give the crown again for this one as well (also 20 points for this!) (sorry if im bothering anyone!!)

Answers

Answer:

The anwser is 321.6 I hope it helps

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

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

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

Find the volume of the composite solid. Round to the nearest tenth.
3 cm
6 cm
2 cm

Answers

Answer:

36 cm

Step-by-step explanation:

3 cm times 6 cm = 18cm

18 cm times the height (2 cm) = 36 cm

So, the answer is 36 cm for the volume.

What is the equation of the line perpendicular to Y= 1/2x +6 that passes through the point (4,1)

Answers

Answer:

Step-by-step explanation:

y= mx+b is the general equation where m is the slope

y= 1/2 x +6 has the slope 1/2

perpendicular lines have the slope negative reciprocal

so the slope of the ⊥ line is -2

y = -x +b , yet for point (4, 1) the x=4 and y =1

1= -4 +b so b= 5

the equation of the ⊥ line is y= -2x+5

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)

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

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

Kenny has $100 and spends 1/4 of it. How much does she have left

Answers

Answer:

$75

Step-by-step explanation:

1/4=25

100-25= 75

Does this table represent a function? Why or why not?
A. Yes, because the y-values are positive numbers
B. No because each x value is different
C. No because none of the y values are the same
D. Yes because every x value corresponds to exactly one y value

Answers

Answer:

D) Yes, Because every x-value corresponds to exactly one y-value

Step-by-step explanation:

I did this, got it correct

help plzzzzzzzzzzzz ​

Answers

.25 length is 1 shoe size, so evey .25 length is 1 shoe size bigger

make d the subject of the formula h= d/3 +2

Answers

Answer:

d = 3h - 6

Step-by-step explanation:

Please help!! Tysm!!!!!!!!!!!!!!!!!

Answers

Answer:

first one

Step-by-step explanation:

because half of the figure

Answer:

The first one

Step-by-step explanation:

Guys what are some characteristics of this house I can’t think of any other than secluded i’ll give you brainliest.

Answers

Answer:

Red spanish roofs, verdant garden, suburban, polished, and quaint.

That good enough, haha?

neat, pristine, cookie-cutter, well-kept, groomed, welcoming

It would be really nice if you guys could help me out with this

Answers

Answer:

times 2

Step-by-step explanation:

2×2=4

-7×2=-14

which is why the scale factor is times 2

What is one-half of the product of the following?

Answers

Answer:

-2/3 is the right answer

Solve 34x+14y=5 for y.

Answers

This is how you solve it, and here is the answer!

Answer:

y=-17/7x+5/14

Step-by-step explanation:

30 POINTS! PLEASE HELP ME OUT! Find the values of the variables in the parallelogram. The diagram is not to scale.

Answers

Answer:

B

Step-by-step explanation:

X = 29 by the alternate interior angles

y = 49 by the triangle sum theorem

z = 102 because the opposite sides of a parallelogram are congruent

Answer:

b. x = 29°, y = 49°, z = 102°

Find the geometric mean of the numbers. If necessary, give the answer in simplest radical form.

25 and 29

The geometric mean is .

Answers

Answer:

Geometric mean is 26.92582

5 x (h + 3) for h = 7 dose anyone know the answer to this?

Answers

Answer:

50

Step-by-step explanation:

5* ( 7+3)

5* 10

50.

.so the answer is 50

Answer:

50

Step-by-step explanation:

5 x (h + 3) = 5 x (7 + 3)

= 5 x (10)

= 50

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.

-2x + 3 – 5x – 4 = -3x – 8 + 10x

what is x

Answers

Answer:

x= 1/2

Step-by-step explanation:

Let's solve your equation step-by-step.

−2x+3−5x−4=−3x−8+10x

Step 1: Simplify both sides of the equation.

−2x+3−5x−4=−3x−8+10x

−2x+3+−5x+−4=−3x+−8+10x

(−2x+−5x)+(3+−4)=(−3x+10x)+(−8)(Combine Like Terms)

−7x+−1=7x+−8

−7x−1=7x−8

Step 2: Subtract 7x from both sides.

−7x−1−7x=7x−8−7x

−14x−1=−8

Step 3: Add 1 to both sides.

−14x−1+1=−8+1

−14x=−7

Step 4: Divide both sides by -14.

Pt.2 of my other question

Answers

Answer:

x = 5, supplementary

Step-by-step explanation:

6x + 13 + 14x - 33 = 180

20x - 20 = 80

20x = 100

x = 5

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:

find x for problem c please

Answers

Answer:

here is my solution:

let me know if you have any questions please

The entry tickets at a community fair cost $5 for children and $10 for adults. On a certain day 1000 people entered in the fair and $7,100 is collected. How many adults and how many children were at the fair?

Answers

Answer:

C = 580 children.

A = 420 adult.

Step-by-step explanation:

Let the number of children be C.

Let the number of adult be A.

Translating the word problem into an algebraic equation, we have;

A + C = 1000  .......equation 1

10A + 5C = 7100  .......equation 2

A = 1000 - C .......equation 3

Substituting eqn 3 into eqn 2, we have;

10(1000 - C) + 5C = 7100

10000 - 10C + 5C = 7100

10000 - 7100 = 10C - 5C

2900 = 5C

C = 2900/5

C = 580 children.

Now, to find the value of A.

From equation 3;

A = 1000 - C

A = 1000 - 580

A = 420 adult.

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