Two fifth of pupils in a standard 7 class were girls.There were 27 boys in the class. ( a) how many girls were there. (b) how many peoples were there in the standard 7 class​

Answers

Answer 1

Answer:

a. 18

b. 45

Step-by-step explanation:

The question states that 2/5 of the class are girls which means 3/5 are boys:

[tex]\frac{3}{5} = 27[/tex]

Divide this value by 3 to get the value of [tex]\frac{1}{5}[/tex]:

27 ÷ 3 = 9

Multiply this by 5 to find [tex]\frac{5}{5}[/tex], the total pupils in the class:

9 x 5 = 45

As the number of girls is [tex]\frac{2}{5}[/tex] of the total pupils:

9 x 2 = 18

So there are 18 girls in the class which has a total pupil size of 45.

Hope this helps!

Answer 2

Step-by-step explanation:

according to question of are girls than are boys

so let the number of girls be x

so,

of x = 27

x = 27 × 5/3 = 9×5 = 45

x = 45

a ) 45 - 27 = 18

than no. of girls is 18.

b) thier are 45 students in total.

hope this answer helps you dear...take care and may u have a great day ahead!


Related Questions

Can anyone help me with this

Answers

Answer:

the answer is option D......

Mark has a £5 note. A litre of milk costs 80p. Mark buys as many litre cartons of milk as he can. How much money will he have left over?

Answers

Thank you for the points
He can buy 6 liters because £0.80 x 6 = £4.80. So he will have £5.00 - £4.80 = £0.20 left over. 20p.

please help mè to this
Science ​

Answers

Answer:

Wooden popsicles, Tissues.,glassbottles, juice cans, paper cups

a sewing project requires material costing $44 plus tassels. If the material and tassels are to be purchased with four $20 dollar bills, how many tassels can be purchased if they cost $2.40 each

Answers

Answer:

i think the answer is 15

Step-by-step explanation:

four $20 bills would equal $80

$80- $44 because of materials gives you $36

$36 divided by 2.50 equals 15

i hope this makes sense :)

Larry Gold’s gross pay for this week as a stock clerk for Hensley’s is $375.15. He is single and claims 2 allowances. Using the percentage method of withholding, what is his withholding for federal income tax?

Answers

Larry gold is withholding $22.38 in federal tax income.

The federal government and the majority of states in the US impose income taxes.

Applying a tax rate to taxable income, which is the entire income less permissible deductions, yields the income taxes, which may rise as income rises. Income is a broad concept. Estates and trusts may be subject to taxation on income that has not been dispersed, in addition to individuals, corporations, and the government. (With a few exceptions for Federal income taxation) Partnerships are not subject to taxation; however, the partners of a partnership are. While nonresidents are solely subject to local taxes, residents and citizens are subject to worldwide taxes. Numerous credit kinds lower taxes, and some credit types may even be more than taxes before credits. There is an alternative tax.

Given that Larry gross pay for this week is $375.15

Now we know from the income tax table that the withheld tax is calculated by calculating 6% of the gross pay when there are 2 allowances.

Tax  = 6% of 375.15 = 22.38

Hence the withholding for federal income tax is $22.38 .

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Find the equation of a line that passes through (5,-3) and is perpendicular to y = x.

a) y=x+2
b) y=x-8
c) y=-x+2
d) y=-x-8​

Answers

Answer:

B

Step-by-step explanation:

X is 5 and y is -3, so y is x minus 8, which is y=x-8

Frank multiplied 7 and 528 and got the product 3,696.

Which estimate shows that his answer is reasonable?

Answers

Step-by-step explanation:

I think because the last number in 528 is 8 therefore 7×8 is 56 and the product last number is 6 there you have it

b) 8 x + 3 = 35
C)_times5=80/2

Answers

Answer:

b. 8×+3=35

Step-by-step explanation:

is the answer

Math experts please provide the product in standard form thank you so much

Answers

Answer:

[tex]2x^{3} -11x^{2} +18x-9[/tex]

Step-by-step explanation:

use foil thn combine like terms

suppose another line for a chair lift is placed at a constant distance c below the gondola line. what is the equation of the new line? is the new line also parallel to the hill? explain.​

Answers

Answer:

Yes They are Parallel.

Step-by-step explanation:

The required equation of the line y = ax + c as of the old line and also the line is parallel to the hill.

Given that,

Suppose another line for a chair lift is placed at a constant distance c below the gondola line. the equation of the new line and is the line parallel to the hill is to be discussed.

What is a line?

A line is a straight curve connecting two points or more showing the shortest distance between the initial and final points.

Here,
The required new line is placed at a constant distance c below the gondola line,
If the line has a constant distance from the other line that implies that the line is parallel, and the equation of the line is given as,
y = ax + c

Thus, the required equation of the line y = ax + c as of the old line and also the line is parallel to the hill.

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25 hours in 5 days; 8 hours in 2 days are the rates equivalent.

Answers

Answer:

NO

Step-by-step explanation:

25 hours is 5 days is the same as 5 hours per day.  25 ÷ 5 = 5

8 hours in 2 days is the same as 4 hours per day.   8 ÷ 2 = 4

True or False: If one of the legs in a right triangle is half of the hypotenuse, then the angle opposite to that leg is 60 degrees.

Answers

We want to see if the given statement is true or false.

We will prove that the statement is false.

The statement is:

" If one of the legs in a right triangle is half of the hypotenuse, then the angle opposite to that leg is 60 degrees."

We can use the rule:

Sin(θ) = (opposite cathetus)/(hypotenuse).

Let's define:

hypotenuse = H

opposite cathetus = H/2

Let's see if the given angle is equal to 60°, we will have:

Sin(θ) = (H/2)/H = 1/2

θ = Asin(1/2) = 30°

So we can see that the statement is false.

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I've been stuck on this for so long​

Answers

y = 6/5x - 1

hope this helps :) !!

Answer:

[tex]y = \frac{6}{5}x - 1[/tex]

Step-by-step explanation:

use the formula

[tex]y = mx + b[/tex]

m is the slope and b is the y-intercept. Begin with b, where the line crosses the y-axis (vertical axis). It crosses at -1, so this is b.

Next move with m. Do rise/run. Start at the y-intercept and you are going to rise 6 and run 5 to the next point. So the slope is 6/5. Leave as an improper fraction. Plug-in for m. Since the line goes uphill from left to right it has a positive slope.

Determine the product of the binomial -5x-7 and the trinomial
3x2-4x-5. To earn full credit, show your work using a method explained in
the Orientation

Answers

Answer:

[tex]( - 5x - 7)(3 {x}^{2} - 4x - 5) \\ \\ - 15 {x}^{3} + 20 {x}^{2} + 25x - 21 {x}^{2} + 28x + 35 \\ \\ - 15 {x}^{3} + 20 {x}^{2} - 21 {x}^{2} + 25x + 28x + 35 \\ \\ = - 15 {x}^{3} - {x}^{2} + 53x + 35[/tex]

I hope I helped you^_^

HELP

15.4 = -2.1 + a/0.2

Answers

Answer:

a = 3.5

Step-by-step explanation:

15.4 = -2.1 + a/0.2

Combine like terms:

15.4 = 2.1 + 5a

Swap sides:

-2.1 + 5a = 15.4

Can anyone help me with this question please ?

Answers

Answer:

-0.20412414523 there you go

When the data points on a graph shows a steady trend and it upward direction there is what?

Answers

Answer:

An upward trend

Step-by-step explanation:

When data points on a graph show a steady upward trend, it is typically referred to as a "positive correlation" or "positive trend."

We have,

A positive correlation means that as one variable increases, the other variable tends to increase as well.

In other words, there is a positive relationship between the two variables being plotted on the graph.

Positive correlation is often represented by a line that slopes upward from left to right on a scatter plot or graph.

Thus,

When data points on a graph show a steady upward trend, it is typically referred to as a "positive correlation" or "positive trend."

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what does it mean is x=5 a solution?

Answers

Answer:

it can mean that on a graph where y=0 and x=5 that the line goes through that point or I can just mean in an equation that if y is 0, then x is 5

It means that when we replace x with 5 in a equation we get the answer as 0.

It can be any number

Simplify 3 square root 900

Answers

Answer:

30

Step-by-step explanation:

The square root of 900 is 30. It is the positive solution of the equation x2 = 900. The number 900 is a perfect square.

Answer:

The square root of 900 is 30. It is the positive solution of the equation x2 = 900. The number 900 is a perfect square

After their first two plays, a football team's position is –7 yards with respect to the original line of scrimmage. How many yards does the team need to gain on its next play to get back to the original line of scrimmage?

Answers

Answer:

I think its 17 yards if I read that correctly

Answer:

Step-by-step explanation:Its location is based on the spot where the ball is placed after the end of the most recent play and following the assessment of any penalty yards.

Simplify 6-sqr25/4=..............

Answers

[tex]6 - \sqrt{ \frac{25}{4} } \\ = 6 - \frac{5}{2} \\ = \frac{12 - 5}{2} \\ = \frac{7}{2} \\ = 3.5[/tex]

1.) Keisha's kitchen is shaped like a square. The room has an area of 256 feet squared. Which is the length of one side of Keisha's kitchen?

Also the attachment, and is it rational or irrational?

Answers

Answer:

1.  16 ft

[tex]\sf 2.\quad \dfrac{29}{99}[/tex]

Step-by-step explanation:

Question 1

Formula

Area of a square = s²  (where s is the side length)

Given:

Area = 256 ft²

Substitute the given area into the formula and solve for s:

[tex]\sf \implies 256=s^2[/tex]

[tex]\sf \implies \sqrt{256}=\sqrt{s^2}[/tex]

[tex]\sf \implies s=\pm 16[/tex]

As distance is positive, the length of one side of Keisha's kitchen is 16 ft.

Question 2

Converting a recurring decimal to a fraction

Let x equal the recurring decimal:

[tex]\implies \sf x=0.292929...[/tex]

Create another number with recurring 29s by multiplying the above by 100:

[tex]\implies \sf 100x=29.292929...[/tex]

To solve these two equations and write x as a fraction, subtract the first equation from the second to remove all the recurring digits after the decimal point:

[tex]\begin{array}{r r c l}& \sf 100x &= &\sf 29.292929...\\- & \sf x&=& \sf \phantom{..}0.292929...\\\cline{1-4} & \sf 99x&=& \sf29\\\cline{1-4}\end{array}[/tex]

Therefore:

[tex]\implies \sf 99x=29[/tex]

[tex]\implies \sf x=\dfrac{29}{99}[/tex]

Therefore:

[tex]\sf \implies 0.\overline{29}=\dfrac{29}{99}[/tex]

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solved for x?
ax - b = x
-

Answers

Answer:

ax - b = x

    +b   +b

ax/a = c/a  

     d=x

Step-by-step explanation:

There are no numbers so I can't give a specific answer so I substituted numbers with letters :)

You have a $25 gift card for a donut shop. Each donut costs $1.25. Write an equation in
slope-intercept and standard form that gives the amount (in dollars) that remains on the card as a
function of the total numbers of donuts you have purchased so far.

Answers

I believe it would be 2.50 dollars left. (2.50xy)

The equation of the given situation is required.

Slope intercept form [tex]y=-1.25x+25[/tex]

Standard form [tex]1.25x-y=25[/tex]

The total amount of money is $25.

Cost of one donut is $1.25

Let y be the amount of money left

x be the number of donuts bought.

So, the amount of money left after buying x donuts is

[tex]y=25-1.25x\\\Rightarrow y=-1.25x+25[/tex]

The standard form is [tex]1.25x-y=25[/tex]

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guys pls help me!!!!!!

Answers

Answer:

17 degrees

Step-by-step explanation:

x would be roughly 15

so sorry if incorrect

convert the unit
1.5kg to g​

Answers

Answer:

The answer should be 1500g I think.

Question is in the pic :)

Answers

Answer:

Since +P looks to be 7, -P would be -7

Hope this helps :)

Answer:

-7

Step-by-step explanation:

P is a variable, and P can only have 1 value. Thanks to the number line, we know what this value is. P is positive 7. If we know that the set value of P is positive 7, then we can just treat it like it is positive 7.

P - 5 = 2

P + 3 = 10

So putting a negative sign in front of P will mean it will be

- (7)

Please I’ll mark brainiest and I’ll give extra points !!

Answers

Answer:

B

Step-by-step explanation:

2.75 x 0.10x

x in this case is 0

so 2.75 x 0.10x0

= 2.75

So, I have a math problem, the problem is,16x^0+2x^2*y^-1,How do I solve if x = 2 and y = 4?

Answers

Answer:

Given x = 2 and y =4

so 16[tex]x^{0}[/tex]+2[tex]x^{2}[/tex][tex]y^{-1}[/tex]

= 16*[tex]2^{0}[/tex] + 2*[tex]2^{2}[/tex]*[tex]4^{-1}[/tex]

= 16 + (2*4)/4

=16 + 8/2

16 + 2

=18

Step-by-step explanation:

what is 4000ml to dm

Answers

Answer:

4

Step-by-step explanation:

Answer:

4 cubic decimeters.

....

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