Help!!! A teacher divided the class into two groups of equal size.

3 5 of the first group are right-handed.

80% of the second group are right-handed.

What fraction of the class is right-handed?





A.4/5


B.7/10


C.5/7


D.8/9

what are the situations? tell me and i will gladly help you! :)

Answer:

The situation that is represented is 24 ÷ 6 which equals 4

Step-by-step explanation:

Answer:

i think IV

Step-by-step explanation:

because of the picture

Answer:

x=70

Step-by-step explanation:

First subtract 30 from 180

180-30=150

Subtract 10 from 150

150-10=140

Divide 140 and 2

140÷2=70

Answer:

x=70

Step-by-step explanation:

angles on a straight line add to 180

so first you do 180-30 which equals to 150

this means that 2x+10=150

take away 10 from both sides and your left with

2x=140

since you are finding x

you divide both sides by 2

x=70

Answer: There is 52.8 ounces of the juice in the cup now.

Step-by-step explanation:

We are given that,

The quantity of juice you initially have = 19.3 ounces

You added 33.5 ounces more to the cup.

Then, By using the addition operation, the total quantity of juice in the cup will be (Juice you initially had) + (additional amount)

i.e. The total quantity of juice in the cup= 19.3 + 33.5 ounces

The total quantity of juice in the cup= 52.8 ounces

Hence, there is 52.8 ounces of the juice in the cup now.

Step-by-step explanation:

When t = 2,

h(2) = 8 + 40.8(2) - 16(2)² = 8 + 81.6 - 64 = 25.6

Therefore the height after 2 sec is 25.6.

Answer:

[tex]h(t) = 8 + 40.8t - {16t}^{2} \\ h(2) = 8 + 40.8(2) - 16 {(2)}^{2} \\ = 8+81.6 - 64 \\ = 89.6 - 64 = \boxed{25.6}[/tex]

After 2 seconds the ball will be at the height of 25.6 unit.

Answer:

I have made it in above pic

Answer:

h = 32

Step-by-step explanation:

In the given figure, for the first parallelogram, base is 36 and height is 24 while for the other parallelogram, base is 27 and height is h.

The area of a parallelogram is given by :

A = base × height

So,

The both parallelograms,

[tex]36\times 24=27h\\\\h=\dfrac{36\times 24}{27}\\\\h=32[/tex]

So, the value of h is 32.

I dunn know wut you mean but herez..

Simplify the parenthesis

Simplify all exponents

Simplify all multiplication and division, left to right

Simplify all addition and subtraction, left to right

Hava gud day :P

iii,v,iv,i, and ii

can I get brainlyest?

Answer:

b = (d-c)/a

Step-by-step explanation:

ab + c = d

ab=d-c

b = (d-c)/a

Answer:

28.3 (explaination below)! :)

Step-by-step explanation:

Use the formula for cicrumfrence: C=2πr

Radius can be found by splitting the given number in half, (unless you were given the radius already, then you'd just multiply by 2).

Plug in our numbers. C= 2π4.5

Then, multiply.

You'd get 28.27433388230814.

Rounding to the first decimal place, you'd have a final answer of  28.3.

Hope this helps!

Answer:

8

Step-by-step explanation:

add 12+3 is 15, then divide 120 and 15 which is 8

Answer:

x=9, -1

Sorry if its wrong

Answer:

i belive p= 8

Step-by-step explanation:

10-2= 8

8+2 is 10 so p +2 woyld =10

Answer:  49 square cm

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

For any rectangle, the opposite sides are the same length.

Set the given expressions equal to x and solve to get

2x-1 = x+3

2x-x = 3+1

x = 4

So each opposite side is:

Each side being the same length (7) confirms we have the correct x value.

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

Let's say L = 7 is the length and W is the unknown width.

We'll use the perimeter of a rectangle formula given below with P = 28 as the given perimeter. Solve for W.

P = 2*(L+W)

28 = 2*(7+W)

28/2 = 7+W

14 = 7+W

7+W = 14

W = 14-7

W = 7

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

The rectangle has a length of L = 7 and width of W = 7, so its area is

A = L*W

A = 7*7

A = 49 square cm

Because we have the length and width as the same value, this rectangle is also a square.

Answer:

8x^3y

Step-by-step explanation:

The area of a rectangle is length * width.

area = 4x^2y * 2x =

= 4 * 2 * x^2 * x * y

area = 8x^3y

Answer:

G: 7/5

Step-by-step explanation:

12x - 15 = 6 - 3x

12x + 3x = 6 + 15

15x = 21

x = 21/15

x = 7/5

Answer:

A. P=11*3 = 33 ft

   A= 21*3 = 63 ft^3

B. P = 9*3 = 27 ft

   A = 15*3 = 45 ft^3

C. P = 20*3 = 60 ft

   A = 24*3 = 72 ft^3

D. P = 13*3 = 39 ft

   A = 25*3 = 75 ft^3

Step-by-step explanation:

The factored form of (x³ - 1) is option C. (x - 1) (x² + x + 1)

Polynomials are mathematical expressions which consist of one or more terms involving variables and coefficients connected with operations like multiplication, subtraction, addition and natural number powers of variables.

Given is a cubic polynomial expression.

Given is x³ - 1.

We have to factorize it.

x³ - 1 = x³ - 1³

We have the algebraic expression identity that,

a³ - b³ = (a - b) (a² + ab + b²)

Using the expression, we get,

x³ - 1³ = (x - 1) (x² + x + 1²)

         = (x - 1) (x² + x + 1)

Hence the correct form is option C.

Learn more about Factorization of Polynomials here :

https://brainly.com/question/26354419

#SPJ7

Answer:

74.42

Step-by-step explanation:

(150-86):86*100 =

(150:86-1)*100 =

174.41860465116-100 = 74.42

Answer:

16f+28

Step-by-step explanation:

just had to simplify the expression

Answer:

16f+28

Step-by-step explanation:

Use the distributive property.

4(4f)+4(7)

16f+28

Answer:

4 to 6? not 100% sure but i think that's it.

Answer:

£1290

Step-by-step explanation:

35%+40%= 75%

£600=25% £600÷20=30 25%of till = 30 notes 100%=120 notes

40% of 120 =48notes 48x10=£480

90notes-48notes=42notes

42x£5=£210

£600+£480+£210=£1290

Answer:

choose option B. - 4

Step-by-step explanation:

Slope intercept form

y - 5 = 3 (x - 3)

y = 3x - 9 + 5

y = 3x - 4

Answer:

10(3^(5-n))

Step-by-step explanation: