Mathematics College

a class has 28 students. The ratio of girls to boys is 4:3. How many girls

Answers

Answer 1

Answer:

let

no of girls be 4x & boys be 3x

or, 3x+4x=28

or, 7x=28

x=28/7=4

hence no of girls = 4x=4*4= 16

Related Questions

The value of sin 240° is

Answers

Answer:

-0.5879

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

Answer:

-0.866

Step-by-step explanation:

or  -(√3/2)... same thing just different format. Hope this helps

The figure shows how the yard lines on a football field are numbered. The goal lines are labeled G. A referee was standing on a certain yard line as the first quarter ended. He walked 41
3
4
yards to a yard line with the same number as the one he had just left. How far was the referee from the nearest goal line? Express your answer as a simplified mixed number.

The referee was BLANK yards away from the goal line before moving.

Answers

YOU WILL DO YOU GOOD LUCK

Step-by-step explanation:

Wooden flooring costs £35 per square metre. The floor is then edged with a narrow wooden strip which costs £4 per metre.

How much does it cost for a 6m by 4m room, including the edging?

Answers

Answer:

£920

Step-by-step explanation:

We need to find the area of floor to find the cost of the flooring, and then we need to find the perimeter of the floor to find the cost of the edging.

A = LW = 6 m × 4 m = 24 m²

Cost of flooring: 24 m² × £35/m² = £840

P = 2(L + W) = 2(6 m + 4m) = 2(10m) = 20 m

Cost of edging: 20 m × £4/m = £80

Total cost:

£840 + £80 = £920

If F(x) = 12x/(3 + x2), find F '(3) and use it to find an equation of the tangent line to the curve y = 12x/(3 + x2) at the point (3, 3).
F '(3) =
y(x) =

Answers

Answer:

f=12

yx=88

Step-by-step explanation:

(12c(5th power)) x 3c(4th power)

How do we simplify this equation?

Answers

Answer:

You can combine the powers and bases to get 36c^9

Step-by-step explanation:

12*3=36

Rule of exponents= n^m*m^n is (n*m)^m+n

Hope this helps.

A normal conversation is about 10^7 times the threshold of hearing. Compute the intensity level (in decibels) for a normal conversation.

Answers

Answer:

70

Step-by-step explanation:

The sound of a normal conversation 3  is  times intense than the sound of a computer.

What is sound intensity?

It is the energy flow per unit area. It refers to the product of pressure and velocity of particles in a fluid medium, which is equivalent to the power received per unit area.

Let us say the sound intensity of the quietest noise a person can hear is 60 decibels. So the sound intensity of computer is 20 decibels.

Sound intensity of a normal conversation/ computer sound, will be:

[tex]SI=\frac{60}{20} =3[/tex]

Therefore, the sound of a normal conversation 3  is  times intense than the sound of a computer.

See more about sound intensity at brainly.com/question/17062836

as part of a campaign to promote it's annual clearance sale


​

Answers

Answer:

is this a question or not?

Step-by-step explanation:

one number is 6 more than the other number. also, 7 times the smaller number is equal to 6 times the larger number. find the two numbers.​

Answers

Answer:

x = 36; y = 42

Step-by-step explanation:

x+6 = y

7x = 6y

7x = 6(x+6)

7x = 6x+36

-6x  -6x

x = 36

_________

y = 36+6

y = 42

_________

Draw pictures to show two ways to buy 324 marbles

Answers

Answer:

Step-by-step explanation:

Describe the error Sadie made, and explain how to find the correct answer.

Answers

Answer:

did not simplify correctly

Step-by-step explanation:

just cuz

In the rectangle below, AE = 2x+5, CE=5x-13, and mZECD=28°.
Find BE and m ZEBC.
А
WO
B
E
B
B
m ZEB
D
С

Answers

Answer:

https://www.portnet.org/cms/lib6/NY01001023/Centricity/Domain/290/Scanned-image.pdf

Step-by-step explanation:

...

the sum of three consecutive even integers if the largest number is y

Answers

Answer:

y

Step-by-step explanation:

4y=6 sorry thats all i know

What does it mean to “solve” the following equation for y.

Answers

Solve for 'y' means find the equation to get the value of y.

Some help ASAP plz 20 points

Answers

Answer:

the answer is 1,8,1, have a nice day

Answer:

1, -8, -1

Step-by-step explanation:

The coefficients of a function are the constants that are in front of the variables. For the function [tex]t-8t^{9} -t^{7}[/tex], the coefficients would be 1, -8, and -1.

Solve the problems.
A bird is flying at an elevation of 14 feet above the
surface of the water. A fish is swimming the same
distance below the surface of the water.
How can you
represent a location
below the surface of
the water?
a. What number represents the position of the fish
relative to the surface of the water?
b. How does the absolute value of the number
you wrote show that the distances are the
same? Explain.

Answers

Answer:

I believe a is -14

Step-by-step explanation:

its -14 because if it is in the exact same spot below water, think of the water as point 0. the bird is 14 and the fish is -14. Hope this helped

The table represents the ratio of tulips todaffodils in a garden how many tulips will there be if the garden has 60 daffodils

Answers

There would be 85 Tulips in the garden if the garden has 60 daffodils

Two variables are said to be proportional if an increase in one variable leads to an increase in another variable and vice versa.

From the table, 12 daffodils corresponds with 17 Tulips.

Hence the ratio of tulips to daffodils = 17 tulips / 12 daffodils

Therefore for 60 daffodils:

Number of Tulips = (17 tulips / 12 daffodils) * 60 daffodils

Number of Tulips = 85 Tulips

There would be 85 Tulips in the garden if the garden has 60 daffodils

Find out more at: https://brainly.com/question/17741678

Perpendicular to y=-3x+11 and goes through the point (-9,-6)
please help it’s due next period

Answers

Answer:

y = 1/3x - 3

Step-by-step explanation:

If the line is perpendicular to y = -3x + 11, it means that the two gradients multiply to make -1.

So the gradient of the perpendicular line is 1/3 (-3 × 1/3 = -1)

y = 1/3x + c

Next, substitute x = -9, and y = -6 to find the y intercept, or c:

-6 = 1/3(-9) + c

-6 = -3 + c

c = -6 + 3

c = -3

The equation of the line is y = 1/3x - 3

Write the equation of the line containing the points (3, 6) and (7, - 2) in standard form.

Answers

Answer:

[tex]y = mx + c \\ 6 = 3m + c...(1) \\ - 2 = 7m + c...(2) \\ subtract \: (2) - (1) \\ 4m = - 8 \\ \therefore \: m = - 2 \: sub \: in \: (1) \\ 6 = 3( - 2) + c \\ \therefore \: c = 12 \\ \boxed{y = - 2x + 12}[/tex]

Answer:

y=-2x+12

Step-by-step explanation:

6∧4 − 54² = 0 Solve for all solutions.

Answers

Answer:

-1620

Step-by-step explanation:

Patrick ate 540 apples in 9 hours. at that rate, how many apples could he eat in 4 minutes?

Answers

Answer:

He could eat 4 apples in 4 minutes

Step-by-step explanation:

If he eats 1 apple per minute (which I dont know how he does) then in 4 minutes he will have eaten 4 apples.

- 4. What is the roster form of the set K = {x/x are odd numbers from 2 to 8} ? A. H = {2, 4, 6, 8} C. H = {3, 4, 5, 6, 7} B. H = {3, 5, 7} D. H = {2,8} 1 2 3 ? Which method for theiva CIV & CLUJ -​

Answers

Answer:  H = {3, 5, 7}

Explanation:

We simply list any odd number that is between 2 and 8. The term "roster form" can be thought of as listing the roster of a sports team (eg: baseball). So instead of describing what the numbers look like, we list out the numbers themselves. Those numbers being 3, 5 and 7.

Something like {2,4,6,8} is ruled out because we're dealing with odd numbers only.

Pre-calc I'm having a lot of trouble 61 POINTS

Answers

Answer:

See below

Step-by-step explanation:

The points:

{(-5, 6), (-5, 8), (2, 5), (6, 9)}

The domain (set of input values) is:

{-5, 2, 6}

The range (set of output values):

{5, 6, 8, 9}

The relation is not a function because the same input (-5) has two different outputs (6 and 8).

please I need the answer right now.

Answers

3/10, this shouls be correct

What is the correct estimate for this sum?

Answers

The answer is the second one

what is 3/5 x 7/9 equivalent to 3/5 divided by 7/9

Answers

Step-by-step explanation:

It's 27/35, so 27/1 * 1/35

Answer:

0.31  (correct me if I'm wrong)

Step-by-step explanation:

3/5*7/9=0.463/5 divided by 7/9=0.770.77-0.46=0.31

y=4x+2 and y=-x-3. Graph

Answers

Answer:

(Hope this helps can I pls have brainlist (crown)☺️)

Step-by-step explanation:

In pic

(Credit: M a t h w a y )

Hi i need help with this

Answers

Answer:

2 (n + 2) = 2n + 4

n + n + n + n = 4n

2 (3n) = 6n

4n + n = 5n

Step-by-step explanation:

MARK "BRAINLIEST" FOR MORE HELPFUL CONTENT!

2 * (n+2) -> 2n + 4

MARK "BRAINLIEST" FOR MORE HELPFUL CONTENT!

n + n + n + n -> 4n

MARK "BRAINLIEST" FOR MORE HELPFUL CONTENT!

2 * (3n) -> 6n

MARK "BRAINLIEST" FOR MORE HELPFUL CONTENT!

4n + n -> 5n

MARK "BRAINLIEST" FOR MORE HELPFUL CONTENT!

if A=(-2,-4) and B=(-8, 4) what is the length of AB? ​

Answers

the length of AB is 10 cm..........

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

Length of AB is equal to :

[tex]10 \: \: units[/tex]

Refer to the attachment for solution ~

Simplify and show work I need help

Answers

Answer: 6x^4-2x^2x5x+2x^2

Step-by-step explanation:

Find the equation of the linear function represented by the table

Y 2 7 12 17
x 1 2 3 4

​

Answers

Answer:

Step-by-step explanation:

(1, 2) (2, 7)

(7-2)/(2 - 1) = 5/1= 5

y - 2 = 5(x - 1)

y - 2 = 5x - 5

y = 5x - 3

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