Ol
© The ratio of boys to girls in a class is 5:4. There are 36 students in the class. How many
students are girls?​

Answers

Answer 1

Answer:

16

Step-by-step explanation:

[tex]no \: of \: girls = \frac{4}{5 + 4} \times 36 \\ \\ = \frac{4}{9} \times 36 \\ \\ = 4 \times 4 \\ \\ = 16[/tex]

Answer 2

Answer:

Step-by-step explanation:

let the ratio of boys and girls be 5x and 4x

According to question,

5x+4x = 36

or, 9x= 36

x=4

number of boys = 5x

                            = 5·4= 20

number of girls = 4x

                         = 4.4=16

therefore the total no of boys is 20 ans girls is 16


Related Questions

What is the value of x in the proportion? 2/5=x/21-x

Answers

Answer:

6

Step-by-step explanation:

Hope it can help you.........

Which expression can be modeled using the number line?

Answers

Answer:

Expression that can be modeled using the number line is  7 over 10 divided by 1 over 10  

Step-by-step explanation:

Arrow starts from 0 then it goes to 1/10 then to 2/10 then to 3/10 then to 4/10 then to 5/10 then to 6/10 then to 7/10.

Which implies 7/10 is divided into 7 equal parts of the equal length of 1/10 units.    

Hope this helps you :)

For which pair of numbers is 7 the greatest common factor (GCF)?
O
A 16 and 63
В.
21 and 49
C. 28 and 60
O
D. 42 and 88





P.S HELP!!!! PLZ!!!!!! ASAP!!!

Answers

Answer:

B cuz both can be divided by 7

Assume that y varies directly with x. If y = -5 when
X = 12.5, find x when y=15. Enter in any fractions
using a / (e.g. "1/2" is the same as 1/2

Answers

Answer:

Thus, the value of x = -36 when y = 15

Step-by-step explanation:

We know that if y varies directly with x, we can express the relationship such as

y ∝ x

y = kx

k = y/x

where 'k' is called constant of variation.

Given

y = -5

x = 12

Using the equation

k = y/x = -5/12

Thus, the value of k = -5/12

Finding x when y = 15

y = 15

k = -5/12

substituting y = 15 and k = -5/12 in the equation

y = kx

15 = -5/12 (x)

15×12 = -5x

180 = -5x

divding both sides by -5

-5x/-5 = 180/-5

x = -36

Thus, the value of x = -36 when y = 15

solve. show all work please.​

Answers

Answer:

8 hours

Step-by-step explanation:

In the problem, it gives you the formula: d=rt, and in the rest of the problem it gives you the distance and the rate, so all you have to do is plug the numbers in and solve.

360m = 45mph(t)

Isolate the variable by dividing 360 by 45

360/45 = t

8 = t

This means that it will take 8 hours to travel 360 miles at a rate of 45 miles per hour.

Hope this helps :)

Can someone help me with all these? .

Answers

Is that homework done

Help ASAP plz
3. Solve by graphing. (y=mx + b)
y=-x+10
x+y=10
What is the solution and also solve using algebra

Answers

Answer: Im sorry im bad at mafs

Step-by-step explanation:

How much interest is earned on a principle of $864.27 invested at an interest rate of 8% for 3 years? Round to the nearest cent

Answers

Answer:

the interest =20.74

whereas the total sum=8850(the sum is the nearest cent)

HOPE IT HELPS YOU

A pizza buffet has prepared 18 pizzas to place on the line at the beginning of lunch at 11:00 a.M. The equation y 14x + 18 can be used to describe the total number of pizzas that have been placed out on the buffet line, where x represents every 9 minutes after 11:00 a.M. Which statement best describes the rate of change in the number of pizzas set out on the buffet?

Answers

Answer: b. Every 18 minutes, 28 more pizzas were set out on the buffet.

Step-by-step explanation:

The equation is in the form: y = mx + c

m is the gradient which represents the rate of change per a given value of x.

x here is every 9 minutes after 11:00. Every 18 minutes therefore will give x a value of 2 because 18/9 = 2.

The rate of change every 18 minutes is therefore;

= 14 * 2

= 28 pizzas

Find the unit rate.
Round to the nearest hundredth, if necessary.

$170 for 12 ft2

Answers

How many district are there in Nepal?

77.

CAN I HAVE SOME HELP!!!!

Answers

Answer:

I believe is C

if not I'm sorry.

please help with this answer I don't understand it ​

Answers

Answer:

Step-by-step explanation:

the 1st one is 1735

The 2nd one is 1573

A rectangular vegetable garden has a length that is 3 times its width. The perimeter of the garden is 90 feet. What is the width of the garden. Write an algebraic equation and solve

Answers

Answer:

30 thats easy bro divide 90 by 3

Step-by-step explanation:

Answer:

the answer will be 30 so divide 90×3

Which equation has a solution of X=
13?
O
X+ 3 = 10
O x-10=3
* = 26
Ox+12= 1

Answers

Answer:

x-10=3

x+10-10=3+10

x=13

Answer:

x - 10 = 3

Step-by-step explanation:

x - 10 = 3

Add 10 to both sides

x - 10 + 10 = 3 + 10

             x = 13

If QS and TƯ
are parallel lines and
m 55°, what is m

Answers

Answer:

m is your slope. In parallel lines, your slopes are always the same and the y-intercept is always different. so ur slope is also 55.

hmu if u want me to tutor you! im a very good tutor and my fee is 50 cents per hour and every homework or test question is a dollar per page :)

Step-by-step explanation:

how many quarts are in 10 cups

Answers

Answer:

10 cups is 2.5 quarts

Answer:

2 1/2.

Step-by-step explanation:

Four quarts in a gallon, four cups in a quart, 16 oz in a cup, 8 oz in half a cup.

       Brainliest?

how would i graph y=-3x+4

Answers

Answer:

Easy Question

Step-by-step explanation:

First we graph the slope that is 3x them he look for the 4 that will be our y intercept

Answer:

Step-by-step explanation:

What is the 13th square number?​

Answers

Answer:

169

Step-by-step explanation:

hope this will help you

13^2 = 13x13 = 169
169 is the 13th square

There are 3 green and 5 red jelly beans in a stocking. You randomly choose one of the jelly beans. What is the probability of selecting a red jelly bean?

Answers

Answer: 5/8

Step-by-step explanation:

Number of green jelly beans = 3

Number of red jelly beans = 5

Total number of jelly beans = 3 + 5 = 8

The probability of selecting a red jelly bean would be:

= Number of red jelly beans /:Total number of jelly beans

= 5/8

Can someone help me with these?

Answers

you forgot to put the question

a box contain 5 white,2 red, 3 blue and 5 yellow marbles. what is the probality of getting: (i) a red marbles (ii) a yellow marbles​

Answers

total number of marbles= 5+2+3+5 = 15 marbles

probability of a red marble - 2/15

probability of yellow marble - 5/15 = 1/3

Answer:

i) 2/15 ii) 1/3

Step-by-step explanation:

the number of marbles all together is 15

2 out of the 15 are red, so 2/15

5 out of 15 are yellow,so 5/15, simplified to 1/3

how to add 59.5 +30 show process of adding it​

Answers

Answer:

89.5

Step-by-step explanation:

59.5

30.0

89.5

What are the slope and the y-intercept of the linear function that is represented by the table?
х
3
4
у
1
30
NIE
에 <
2
23
15
1
4
13
30
CON
3
5
1
The slope is
2
5
and the y-intercept is -
1
2
The slope is, and the y-intercept is 5.

Answers

Answer:

Slope is -2/5 and y-intercept is -1/3

Step-by-step explanation:

To get the slope, we pick any two points and apply the slope formula

The slope formula is;

m = (y2-y1)/(x2-x1)

To get the slope, we select any two points

That will be;

(-3/4, -1/30) and (1/4,-13/30)

Substituting these in the slope formula, we have:

m = (-13/30 + 1/30)/(1/4 + 3/4)

m = 12/30 = -2/5

Generally, the equation of a straight line is;

y = mx + b

m is slope and b is the y-intercept

We already have the slope, to get the y-intercept, we select any of the points

-3/5 = -2/5(2/3) + b

= -3/5 + 4/15 = b

b = (-9 + 4)/15 = -5/15 = -1/3

Slope is -2/5 and y-intercept is -1/3

Answer:

A

Step-by-step explanation:

The slope is -2/5, and the y-intercept is -1/3.

HELP ME ASAP REALLY NEED HELP

Answers

Answer:

it is B

Step-by-step explanation:

y intercept is -3 and you go up 3 over 4

An electric heater uses 7 1/2 units of electricity in 3 hours. How many units does it use in 5 hours?

Answers

Answer:

12.5 units or 12 1/2 units

Step-by-step explanation:

From the question, it uses 7.5 units in 3 hours.

In one hour it will use; 7.5/3 = 2.5 units

If 2.5 units is used in 1 hour

In 5 hours; 5 × 2.5 units will be used. This gives us 12.5 units or 12 1/2 units.

Find the value of each variable 16-21​

Answers

Answer:

16. [tex]x = 80^\circ[/tex]

17. [tex]x = 55, y =70, z = 55[/tex]

18. [tex]x =8, y =3[/tex]

19. [tex]r = 66^\circ[/tex], [tex]t = 73^\circ[/tex]

20. [tex]y = 70^\circ, x = 55^\circ[/tex]

21. [tex]x =56^\circ, y = 62^\circ[/tex]

Step-by-step explanation:

16. Side [tex]AB = AC[/tex]

So, the opposite angles of the triangle will also be equal.

[tex]\angle B =\angle C = 50^\circ[/tex]

Using triangle sum property, angle of all the internal angles of a triangle is equal to [tex]180^\circ[/tex].

[tex]50+50+x = 180\\\Rightarrow x = \bold{80^\circ}[/tex]

17. Two sides are given as equal, [tex]x = z[/tex]

Angles on a straight line are always equal to [tex]180^\circ[/tex].

So,

[tex]x + 125 = 180\\\Rightarrow x = 55[/tex]

[tex]z = 55[/tex]

Using triangle sum property, angle of all the internal angles of a triangle is equal to [tex]180^\circ[/tex].

[tex]55+55+y = 180\\\Rightarrow y = \bold{70^\circ}[/tex]

18. All the angles are given equal to each other, therefore all the sides of the triangle will also be equal to each other.

[tex]4x+7 = 13y =39[/tex]

[tex]13y = 39\\\Rightarrow y = 3[/tex]

[tex]4x +7 = 39\\\Rightarrow 4x = 32\\\Rightarrow x = 8[/tex]

19. Two sides are given equal to each other, therefore angles opposite to them will be equal.

Using the triangle sum property in the left triangle:

[tex]r + 57 + 57 = 180\\\Rightarrow r = 66^\circ[/tex]

Using the property that vertically opposite angles are equal and the triangle sum property in the right triangle.

[tex]t+50+57 = 180 \\\Rightarrow t = 73^\circ[/tex]

20. All the sides are given equal to each other.

So, all the angles will be equal to [tex]60^\circ[/tex].

[tex]y - 10 = 60\\\Rightarrow y = 70^\circ[/tex]

[tex]x+5=60\\\Rightarrow x = 55^\circ[/tex]

21. Angles on a straight line are always equal to [tex]180^\circ[/tex].

Angles opposite to equal sides in a triangle are also equal.

[tex]118 + y = 180\\\Rightarrow y = 62^\circ[/tex]

Using triangle sum property:

[tex]x+2y = 180\\\Rightarrow x = 180 - 124 = \bold{56^\circ}[/tex]

what number does b stand for in this equation

Answers

interept!
in the formula y=mx+b, the m=slope, and the b=the intercept

hope this helps!

Point D is the center of dilation. Line segment S U is dilated to created line segment S prime U prime. The length of Q S is 4 and the length of Q U is 5. The length of S S prime is 4 and the length of U U prime is 5. Line segment SU is dilated to create S'U' using point Q as the center of dilation. The scale factor of the dilation is .

Answers

Answer:

the answer is 2

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

edge2021

Write 2 cents using the dollar symbol (without spaces)

Answers

Answer:

$0.02

Step-by-step explanation:

This is the correct way to do 2 cents. Since two is not in the tenths place, and is not yet a dollar, the correct answer is $0.02.

Hope this helps! :D

The representation of 2 cents in dollar sign will be $0.02.

What is unit conversion?

To convert any unit into another is called a unit conversion.

In order to convert units, we need to care about their dimensions their dimension should not be changed.

It is known that,

$1 = 100 cents

Divide both sides by 100

$1/100 = 1 cents

Multiply by 2 on both sides,

$(1/100)2 = 2 cents

$0.02 = 2 cents

Hence "The representation of 2 cents in dollar sign will be $0.02".

To learn more about unit conversion,

brainly.com/question/11543684

#SPJ2

a relationship between x and y is defined by the equation y=3x +1/2 which statements are true of this relationship? Select all that apply

The relationship is linear
The graph of the relationship is a curved line
The relationship is nonlinear
In the equation, y is a function of x
In the equation, y is not a function of x
The graph of the relationship is a straight line

Answers

Answer:

a.

b.

d.

Step-by-step explanation:

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