There are 45 pupils in a competition. 2/5 of the pupils are girls. How many boys are there in the competition?

Answers

Answer 1

Answer:

45 * 3/5 = 135/5 = 27

Step-by-step explanation:

Answer 2
45/5 = 9
9 x 2 = 18
45 - 18 = 27

There are 27 boys in the competition

Related Questions

8m-12-6m+4m help I suck at math​

Answers

Well, all we have to do is combine like terms:
2m - 12 + 4m =
6m - 12

8m+4m-6m-12

12m-6m-12

12m-6m

-6m

How did you solve 43? I need explanation I’ll give brainliest

Answers

Answer:

Its 6

Step-by-step explanation:

Answer:

C. 4

Step-by-step explanation:

There are a total of 24 marbles. If you take out 8 of them, that leaves you with 16 marbles left. After doing that, if the chances of withdrawing a white marble are now 1/4, then there would have to be 4.

4/16 = 1/4

if a+1/a=3
What is the answer? a⁵+1/a⁵

Answers

Answer:

123

Step-by-step explanation:

We can square and cube the equation, then multiply the results together.

(a + [tex]\frac{1}{a}[/tex]) = 3 ← square both sides

a² + 2 + [tex]\frac{1}{a^2}[/tex] = 9 ( subtract 2 from both sides )

a² + [tex]\frac{1}{a^2}[/tex] = 7 → (1)

-----------------------

Now cube both sides

a³ + [tex]\frac{1}{a^3}[/tex] + 3(a + [tex]\frac{1}{a}[/tex]) = 27

a³ + [tex]\frac{1}{a^3}[/tex] + 3(3) = 27

a³ + [tex]\frac{1}{a^3}[/tex] + 9 = 27 ( subtract 9 from both sides )

a³ + [tex]\frac{1}{a^3}[/tex] = 18 → (2)

------------------------------

Multiply (1) and (2)

(a² + [tex]\frac{1}{a^2}[/tex] )(a³ + [tex]\frac{1}{a^3}[/tex] ) = 7(18)

[tex]a^{5}[/tex]  + ( [tex]\frac{1}{a}[/tex] + a) + [tex]\frac{1}{a^5}[/tex] = 126

[tex]a^{5}[/tex] + 3 + [tex]\frac{1}{a^5}[/tex] = 126 ( subtract 3 from both sides )

[tex]a^{5}[/tex] + [tex]\frac{1}{a^5}[/tex] = 123

answer
answer
answer
answer
Please..

Answers

Answer:

It's true. We can write integers in fraction by giving it a denominator of 1.

Answer:

true

Step-by-step explanation:

What is the area of the rectangle ABCD? Help

Answers

6 squared + x squared =10 squared
36+ x squared = 100
X squared = 64
X= 8
Area of rectangle is 6 times 8. 48

help pleaseeeeeeeeee

Answers

Answer:

Hello,

Answer D

Step-by-step explanation:

I suppose that i is the imaginary (i²=-1)

i^4=1

i^99=i^(4*24+3)=i^3

i^3-i^3=0

Answer D

Answer:  D)  0

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

Explanation:

Take note of this pattern

i^0 = 1i^1 = ii^2 = -1i^3 = -ii^4 = 1

After this point, we repeat the cycle. The cycle is 4 units long. This means we can divide the exponent over 4 and look at the remainder

99/4 = 24 remainder 3

So i^99 = i^3

which means i^99 - i^3 = i^3 - i^3 = 0

Jun made a round tablecloth for his kitchen table. The tablecloth is 4.5 feet in diameter. Approximately how much fabric did Jun use for the tablecloth?

Answers

Answer:

the correct answer is 16ft^2

Lauren wants to know how many students in her school plan to see the new science fiction movie opening this weekend. She surveyed every Fitch student as they left the school on Friday.

Population:_____________

Sample:__________________

Is this sample reprsentive? Explain.
______________________________

Answers

Just to get pointsssss

given the circle, find the arc measure​

Answers

Answer is 180-122=58

Ellie wants to double her savings
of $5000 by investing her money
for 20 years.
What interest rate does
she need to look for?
Give your answer to 1 d.p.

Answers

Answer:

She will get more money than what she will get in the question

If you buy 12 pounds of lettuce for $96 what is the rate which one pound of lettuce costs

Answers

8

96$ divided by 12 = 8

Thats how you would get the rate and maybe you can apply this method to other questions if there are any?

Answer:

$8

Step-by-step explanation:

$96 divided by 12

Triple a number is 18.

Answers

hi

so 3X = 18

      X = 18/3 = 6

Answer:

6

Step-by-step explanation:

6 + 6 + 6 = 18

How to solve this question pls help asap

Answers

Answer:

answered by g a u t h m a t h

Step-by-step explanation:

Find the value of x. Round to the nearest tenth

Answers

Step-by-step explanation:

use cos since we're given the adjacent and asked to find the hypothenus.

cos 33° = 6/x

cross multiply

xcos33° = 6

divide both sides by cos 33°

(cos 33 is approximately 0.8387)

then x = 7.15

Answer:

[tex]x \approx 7.2[/tex]

Step-by-step explanation:

The given triangle is a right triangle this is indicated by the box around one of its angles, signifying that the angle is a right angle. One of the properties of a right triangle is the right angle trigonometric ratios. these are a series of ratios that relate the sides and angles of a right triangle. Such ratios are as follows:

[tex]sin(\theta)=\frac{opposite}{hypotenuse}\\\\cos(\theta)=\frac{adjacent}{hypotenuse}\\\\tan(\theta)=\frac{opposite}{adjacent}[/tex]

Please note that the sides named ([tex]opposite[/tex]) and ([tex]adjacent[/tex]) Are subjective and change based on the angle by which one refers to. However the side ([tex]hypotenuse[/tex]) indicates the side opposite the right angle, this side does not change its name.

In this case, one is given a (33) degree angle, and the measure of the side adjacent to is, (6). One is asked to find the measure of the hypotenuse (x). It would be most logical to use the ratio of cosine (cos). Substitute the given values in and solve for (x).

[tex]cos(\theta)=\frac{adjacent}{hypotenuse}[/tex]

[tex]cos(33)=\frac{6}{hypotenuse}[/tex]

Inverse operations,

[tex]cos(33)=\frac{6}{hypotenuse}[/tex]

[tex]hypotenuse=\frac{6}{cos(33)}[/tex]

[tex]hypotenuse \approx 7.15[/tex]

35. What is the point-slope form of the
equation for the line with a slope of
-2 that passes through (1,4)?
A. y + 1 = -2(x + 4)
B. y - 1 = -2(x - 4)
C. y + 4 = -2(x + 1)
D. y - 4 = -2(x - 1)


Answers

Answer:

D) y - 4 = -2 ( x - 1 )

Step-by-step explanation:

Point-slope form is y - y₁ = m ( x - x₁ )

so you just plug in your points, hope this helped

D is the answer


………………………….

Two linear functions are described below.

Function f(x) has the equation f(x)=3x−4.

Function g(x) has the table of values shown below.

x g(x)
0 4
3 5
6 6
9 7
Which statement is true regarding the functions f(x) and g(x)?
A
The slopes of the two functions are the same.

B
The slopes of the two functions are opposites.

C
The y-intercepts of the two functions are the same.

D
The y-intercepts of the two functions are opposites.

Answers

Answer:

D

The y-intercepts of the two functions are opposites.

Step-by-step explanation:

f(x) = 3x-4  which has a slope of 3 and a y intercept of -4

g(x)

m = (5-4)/(3-0) = 1/3

g(x) = 1/3 x +4

g(x) has a slope of 1/3 and a y intercept of 4

Solve for x.

6(4x+2)= 3(8x+4)

Answers

Answer:

x = 1

Step-by-step explanation:

6(4x + 2) = 3(8x + 4)

24x + 12 = 24x + 12

x = 1
x = 1

6(4x+2) = 3(8x+4)
24x + 12 = 24x + 12
-12 -12
24x = 24x
-24 -24
x = x

if |x + 2| + 3 = 9, then x =
4 or –8
4
6 or –4
5 or –3

Answers

Answer:

4

Step-by-step explanation:

|x + 2| + 3 = 9

|x + 2| = 6

|(4) + 2| = 6

The card you pick from a normal pack is from a red suit​

Answers

Answer:

1/2

Step-by-step explanation:

Total number of cards in a normal pack = 52

Red cards in a pack = 26

Probability of getting a red card = 26/52

or 1/2 (simplest form)

Calculator
ZC and ZD are vertical angles with MZC = –2x + 90 and MZD = x – 30.
What is mZD
Enter your answer in the box.

Answers

Answer:

10

Step-by-step explanation:

Vertical angles are equal to each other

-2x + 90 = x - 30

90 + 30 = x + 2x add like terms

120 = 3x divide both sides by 3

40 = x

angle <ZD is x - 30 so the answer is 10


If f(x) = 6/x-1
for what value of x does f(x) = 5 ?

Answers

Answer:

11/5

Step-by-step explanation:

f(x) = 6/x-1

f(x) = 5

6/x-1 = 5

=> 6 = 5(x-1)

=> 6 = 5x - 5

=> 11 = 5x

=> 5x = 11

=> x = 11/5

If there are:
6 red marbles
10 yellow marbles
5 green marbles
and 1 blue marble
What is the probability of picking 1 blue marble and 1 green marble?

(Once a marble is chosen it is NOT put back into the box).

(Write your answer in the form of a decimal, round to 2 places).

Answers

Answer:

0.02

Step-by-step explanation:

either picking a green then blue;

5/22 x 1/21= 5/462

or picking a blue then green;

1/22 x 5/21= 5/462

total is 10/462 which is approximately 0.02

since there was no specific order in the question i assumed you add them both.


Helppp plssss help meeee

Answers

Answer:

C. $1,260

Step-by-step explanation:

80 × 14.5 = 1,160

2,500 × 0.04 = 100

Answer:

C. $1260

Step-by-step explanation:

Write the equation of the line that is parallel to the line y=-1/4x - 3 through the point (4,4).

Answers

Answer:

D

Step-by-step explanation:

The slope of the line is - 1/4. The equation of the line is y=(-1/4x)+5

Each employee in a company is either right-handed or left-handed.
32 of the 54 employees are female.
18 of the 41 right-handed employees are male.
Complete the frequency tree for this information.
right-handed
female
left-handed
54
000
right-handed
male
left-handed
Total marks: 3

Answers

Answer:

32 female - 23 right-handed || 9 left-handed

22 male - 18 right handed || 4 left handed

Step-by-step explanation:

I find it easiest to write all the information out and fill the gaps.

From what we're given, 32 employees are female, that means 22 are male, as 54 - 32 = 22.

We are also given that there are 41 right-handed employees, which means there is 13 left-handed employees by subtraction.

If 18 of the right-handed employees are male, then 23 of them are female, and  4 are left-handed males.

If 23 of the female employees are right-handed, then 9 female employees are left-handed.

It's quite simple if you write everything out :D

HELP ASAP ILL GIVE BRAINLIST


The probability of a red candy being selected from a bowl is 0.9, and the probability of a pink frosted animal cookie being taken out of a different bowl is 0.4. What is the probability of getting both a red candy and a pink cookie?

Answers

Answer:

0.36

Step-by-step explanation:

To find the probability, just multiply.

probability of red candy * probability of pink cookie

0.9*0.4=0.36

I hope this helps!

Find the solution set of the inequality

Answers

Answer:

x [tex]\geq -10\\[/tex]

Step-by-step explanation:

x[tex]x\geq -10[/tex]

write the equation for each word sentence and solve 2 problems.

problem one : 12 more than a number is 20

problem two: The sum of a number and eight equals the sum of four times the number and six.

Answers

Answer:

1. 12 + x = 20        2. x + 8 = 4x + 6

Step-by-step explanation:

problem 1 :      

12 + x = 20

problem 2:

x + 8 = 4x + 6

9 in
16 in
13 in
Drawing not to scale
a 38 in 2
b. 117 in 2
C. 468 in2
d. 58.5 in.?

Answers

D.

area of triangle = 1/2 × base × height

therefore,

1/2× 9× 13= 58.5in^2

The area of the triangle with a base of 9 inches and height of 13 inches  is 58.5in^2

We have given that,9 in,16 in, and 13 in

Drawing not to scale

We have given that the triangle

What is the formula for the area of the triangle?

area of triangle = 1/2 × base × height

therefore,

Use the given value in the formula so we get

[tex]1/2\times 9 \times 13= 58.5in^2[/tex]

Therefore the area of the triangle is 58.5in^2.

To learn more about the triangle visit:

https://brainly.com/question/17335144

#SPJ2


Part E how do I solve


Answers

Answer:

the triangles are congruent by SSS criterion

Step-by-step explanation:

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