There are 120 students in class 7. It is known that
2/3
out of them like Maths, out of which 35
are girls. Also, out of total students,
3/5
are boys. (3)
(a) What is the number of girls in the class?
(b) How many students like Maths?
(c) How many boys like Maths?

Answers

Answer 1

Multiply total students by 2/3 to find how many like math:

Like math = 120 x 2/3 = 240/3 = 80 total students like math

Multiply total students by 3/5 to find number of boys:

120 x 3/5 = 360/5 = 72 boys

A) number of girls = total students - boys = 120 -72 = 48 girls

B) from above 80 students like math

C) number of boys that like math = number of students that like math minus girls that like math: 80- 35 = 35 boys like math

Answer 2
72 boys xjtxkttkftkxktx

Related Questions

Zzzzzzzhelpzzzz zzzzzzzz

Answers

the answers are A and D hope this helped

A and D am I to late?!

The pattern 96, 92, 88, 84, ________ follows the "subtract 4" rule. Study the pattern to find traits that are not obvious in the rule. Explain.

HELP ASAP

Answers

Answer:

80

Step-by-step explanation:

add from bottom to the top


Match each product of powers with its simplified expression

Answers

5-³ × 5-³

= 5-³ -³

= 5-⁶

= 1/5

5⁷ × 5³

= 5⁷+³

= 5¹⁰

5⁶×5 -⁴

= 5⁶ - ⁴

=

5-⁴×5⁴×5⁰

= 5-⁴ + ⁴ × 1

= 5⁰

Answer:

answser  in picturew

Step-by-step explanation:

Find the equation in terms of x of the line through the points (-4,-6) and (1,9)

Answers

Answer:

y = 3x + 6

Step-by-step explanation:

y2 - y1 / x2 - x1

9 - (-6) / 1 - (-4)

15/5

= 3

y = 3x + b

9 = 3(1) + b

9 = 3 + b

6 = b

help with trigonometry plz

Answers

Answer:

Below,

Step-by-step explanation:

a. cos O = adjacent side/hypotenuse

= 88.3/117

= 0.75470

O = 41 degrees.

b. sin O = opposite side/hypotenuse

= 2.4/3.8

= 0.63158

O = 39 degrees


Write equation for the line that is parallel to the x axis and passing through (3,2)

Answers

Answer:

y = 2

Step-by-step explanation:

horizontal lines are parallel to the x-axis

The horizontal line through (3, 2) is

y = 2

You have a hospital bill of $14,000. You have an insurance plan that has a $2,000 deductible and a 20% coinsurance clause. How much do you pay towards the total bill?

Answers

Answer:

4400

Step-by-step explanation:

First take off your deductible

14000-2000

12000

Now find 20 % of this amount

12000*20%

12000 * .20

2400

You have to pay the deductible and the 20%

2000+2400

Find the volume of the sphere.
Either enter an exact answer in terms of π or use 3.14 for π and round your final answer to the nearest hundredth.

Answers

Answer:

Volume of a sphere = 4πr³/3

r=10

V = 4πx10³/3

=4000π/3

V= 1333.33π (in terms of pi)

or

V= 4188.79(Nearest Hundredth).

314 or 100pi cause u do 10 squared multiplied by 3.14

just need number 5 !

Answers

Answer:

6.5

Step-by-step explanation:

Cos = Adjacent/Hypotenuse

For the angle with the measure of 70°

Adjacent = x

Hypotenuse =  19

Hence, cos 70 = x/19

multiply both sides by 19

cos(70) * 19 = 19cos(70)

x/19 * 19 = x

we're left with x = 19cos(70)

19cos(70) = 6.5 ( rounded to the nearest tenth )

x = 6.5

I hope this is help full to u

thank you

if 6 = 68 degrees, find the measures of angles 4, 5 ,7

Answers

Answer:

4 = 68

5 = 112

7 = 112

Step-by-step explanation:

Hope it helps

I hope it's helpful .....

Order the numbers −7​, 2​, −4​, 8 from least to greatest

Answers

Answer: -7, -4, 2, 8
-7,-4,2,8 that’s all

Y-intersect of the liner function

Answers

Answer:

15

Step-by-step explanation:

The y- intercept is the value of y on the y-axis where the line crosses.

The line crosses the y- axis at 15 ← y- intercept

The polygons are similar, but not necessarily drawn to scale. Find the value of x.
220
27.5
110
15.8

Answers

Answer:

x = 27.5

Step-by-step explanation:

x/55 = 4/8 (ratio between the two polygons); cross multiply.

220 = 8x; divide 8 on both sides

x = 27.5

Which of the following is equivalent to 16 kilograms?

0.016 grams
0.16 grams
1600 grams
16000 grams

QUICK PLEASE!

Answers

Answer:

16000 grams

Step-by-step explanation:

To change kilograms to grams,  multiply by 1000 grams

16 kilograms  * 1000g / 1 kg

16*1000 grams

16000 grams

Hope this helps!!!

Have a great day!!!

3x-4=4 What is the value of X ​

Answers

Answer:

3x-4=4

3x=8

x=8/3

hope this helps

have a good day :)

Step-by-step explanation:

The answer is gonna be X= 8/3

Help me please and thank you

Answers

Step-by-step explanation:

i dont know i guess we'll never know


Which of the following could be the measure of the angle below?

Answers

Answer:

There is nothing below.

Step-by-step explanation:

Lori is president of a book club. She has a message to get out to her book club members. On Monday, she called one member and asked that member to call to other members by noon the next day and repeat the message. How many calls were made by Friday afternoon?

Please help me!

Answers

Answer:

how many members are in the club??

when a tank is 20% empty, it has 24 more liters of gas that is does when it is 20% full. How many liters of gas could a tank hold if it is full
full answers please no fake answers if answer correctly i will give you brainlist

Answers

Answer:

40 L

Step-by-step explanation:

20% empty is the same as 80%full

.8f = .2f + 24

subtract .2f from both sides

.6f = 24

divide both sides by .6

f = 40

2.
Find the value of x. If necessary, round to the nearest tenth.


A. 13.7 in.

B. 11.7 in.

C. 9.7 in.

D. 6.9 in.

Answers

Answer:

A

Step-by-step explanation:

13.7

Answer is
The answer is A:13.7


z = 3. & y = 6
Evaluate the
expression: Y - Z

Answers

Answer:

6-3=3

3 is the answer because they gave you the value of Y and Z then they asked you to subtract

Expand and simplify (x - 2)(x - 1)

Answers

Answer:

x^2 -3x+2

Step-by-step explanation:

(x - 2)(x - 1)

FOIL

first: x*x = x^2

outer: -1*x = -x

inner: -2*x =-2x

Last: -2*-1 =2

Add together

x^2 -x-2x+2

Combine like terms

x^2 -3x+2

[tex]\huge\textsf{Hey there!}[/tex]

[tex]\large\textsf{(x - 2)(x - 1)}[/tex]

[tex]\large\textsf{DISTRIBUTE}[/tex]

[tex]\large\textsf{x(x) + x(-1) - 2(x) -2(-1)}[/tex]

[tex]\large\textsf{x(x) = }\mathsf{\bf x^2}[/tex]

[tex]\large\textsf{x(-1) = -1(x) = \bf -1x}[/tex]

[tex]\large\textsf{-2(x) = \bf -2x}[/tex]

[tex]\large\textsf{-2(-1) = \bf 2}[/tex]

[tex]\mathsf{= \bf x^2 - 1x - 2x + 2}[/tex]

[tex]\large\textsf{COMBINE the LIKE TERMS}[/tex]

[tex]\mathsf{(-1x - 2x)}[/tex]

[tex]\mathsf{= \bf -3x}[/tex]

[tex]\large\textsf{SOLVE for the ANSWER:}[/tex]

[tex]\mathsf{x^2 - 3x + 2}[/tex]

[tex]\boxed{\boxed{\large\text{Answer: }\mathsf{\bf x^2 - 3x + 2}}}\huge\checkmark[/tex]

[tex]\large\text{Good luck on your assignment and enjoy your enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

7.8 is what percent of 78?

Answers

Answer:

10 %

Step-by-step explanation:

let the percent be x

according to the question

7.8 = x % 0f 78

7.8 = x /100 * 78

7.8*100 = 78x

780 = 78x

780/78 = x

10 = x

Answer:

10 percent

Step-by-step explanation:

7.8 is ? of the number 78.

So, we will multiply 7.8 by 100.

7.8 x 100 = 780

Now, we will divide 780 by 78.

780/78 = 10

So, our answer is 10.

Or, you can divide:

78 divided by 7.8 is 10

In this lesson you will learn methods for finding the lengths of which of the following?

chords
arcs
radii
tangents
secants

Answers

radii...................

Answer:

RADI

Step-by-step explanation:

Maggie timed how long it took
her to finish a jigsaw puzzle.
The first time she finished in
12 minutes. She was able to
finish the puzzle twice as fast
the second time and three times
as fast the third time. How
long did it take her to finish
the puzzle the second and third
times?
What is the answer

Answers

The first time she finished in 12 minutes.

The second time she finished in 12/2=6 minutes

The third time she finished in 12/3=4 minutes

PLEASE HELP FAST!!!!!!!!!

Answers

Answer:

First: [tex]y = \frac{4}{7} x + 2[/tex]    

Second: [tex]y = -\frac{1}{7} x + 2[/tex]

Third: [tex]y = x + 2[/tex]    

Fourth: [tex]y = \frac{1}{7} x + 2[/tex]    

Please help !

What is 92% of 17?











Answers

15.64

To solve: (92x17)/100

Answer:

15.64

Step-by-step explanation:

92% of 17 we can write it like this!

[tex]\frac{part}{whole} = \frac{part}{whole}[/tex]

92% goes in part, 17 goes in whole then 100% below 92!

[tex]\frac{92}{100} =\frac{x}{17}[/tex]

Then, 17 × 92 = 1,564 ÷ 100 = 15.64

Write an equation of the line that passes through the points (3.2) and (6,11). Show your work!

Answers

Answer:

[tex]y=3x-7[/tex]

Step-by-step explanation:

Hi there!

Linear equations are typically organized in slope-intercept form: [tex]y=mx+b[/tex] where m is the slope and b is the y-intercept (the value of y when the line crosses the y-axis)

1) Determine the slope (m)

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex] where the points given are [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex]

Points (3,2) and (6,11)

[tex]=\frac{11-2}{6-3}\\=\frac{9}{3}\\= 3[/tex]

Therefore, the slope of the line is 3. Plug this into [tex]y=mx+b[/tex]:

[tex]y=3x+b[/tex]

2) Determine the y-intercept (b)

[tex]y=3x+b[/tex]

Plug in one of the given points and solve for b

[tex]2=3(3)+b\\2=9+b[/tex]

Subtract 9 from both sides

[tex]2-9=9+b-9\\-7=b[/tex]

Therefore, the y-intercept of the line is -7. Plug this back into [tex]y=3x+b[/tex]:

[tex]y=3x-7[/tex]

I hope this helps!

Does the equation x² - 4x + y2 = -3 intersect the x-axis?

a. yes, because the center is on the x-axis.

b. no, because the center is at (2,0) and the radius is 1

c. no, because the circle is entirely in the first quadrant.

d. yes, because the center is at (-2,0) and the radius is 3.

Answers

Answer:  a. yes, because the center is on the x-axis.

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

Explanation:

The x intercepts always occur when y = 0.

Replace y with 0 and solve for x

x^2-4x+y^2 = -3

x^2-4x+0^2 = -3

x^2-4x+0 = -3

x^2-4x = -3

x^2-4x+3 = 0

(x-3)(x-1) = 0

x-3 = 0 or x-1 = 0

x = 3 or x = 1

This shows that the x intercepts are located at (3,0) and (1,0). Refer to the diagram below. The diagram shows that the roots are at points A and B. The center is the midpoint of A and B. The center is also on the x axis.

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

Here's another approach:

The general template of a circle is (x-h)^2 + (y-k)^2 = r^2

Let's complete the square of the original given equation to get it into that template form above.

x^2 - 4x + y^2 = -3

(x^2-4x) + y^2 = -3

(x^2-4x+4) + y^2 = -3+4 ... add 4 to both sides

(x-2)^2 + y^2 = 1

(x-2)^2 + (y-0)^2 = 1^2

The equation is now in the template form mentioned earlier. The center is at (h,k) = (2,0) which is on the x axis.

Pls help. What is the appropriate congruent for these triangles

Answers

Answer:

Side-Side-Side (SSS) Congruence - if three sides of one triangle are congruent to three sides of  another triangle, then the triangles are congruent.

Side-Angle-Side (SAS) Congruence - If two sides and the included angle of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent.

Angle-Side-Angle (ASA) Congruence - If two angles and the included side of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent.

Angle-Angle-Side (AAS) Congruence - If two angles and the non-included side of one triangle are congruent to the corresponding parts of another triangle, the triangles are congruent.

u see which one fits

Answer:  SAS

Step-by-step explanation: because there are Two sides and the angle between them are congruent.

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