All the following are equal except: 1, 3/3, -3/-3, 2/4
(will mark brainliest)​

Answer:

A = 26

Step-by-step explanation:

sum of students = classA + classB + classC

let's say classA = A, classB = B, and classC = C

A + B + C = 66

class A has five more students than class B, so A = 5 more than B so A = 5+B

class C has 2 less students than class B, so C = 2 less than class B = B -2, so C = B-2

A + B + C = 66

A = 5+B

C = B-2

substitute 5+B for A and B-2 for C in the first equation to limit this to one variable (B)

(5+B) + B + (B-2) = 66

3B + 3 = 66

subtract 3 from both sides to isolate the variable and its coefficient

3B = 63

divide both sides by 3 to solve for B
B = 21

A = 5 + B = 5 + 21 = 26

Answer:

9 ^ 12

Step-by-step explanation:

Use the power rule - (x^a)^b = x^ab

---- > 9 ^ 12

The answer would be:

282429536481

Answer:

477.28cu m

Step-by-step explanation: R (8) x3.14 (pi) is 25.12,  25.12x19=477.28

Answer:

104, with the assumption that "an alphabet" is the English alphabet

Step-by-step explanation:

26*4

Step-by-step explanation:

V=1/3hπr².

(h=3cm, r=5²cm

V= 1/3 x 3 x π x 5²

V= 25π

Answer:

238 cm

Step-by-step explanation:

so we have a scale factor   of  17: 1

originally we had the dimensions:   3cm by 4m

now we have    3*17  by 4*17  = 51 cm by 68 cm

Perimeter = 2*51 + 2*68 = 238 cm

Answer:

360 cm

Step-by-step explanation:

The height of the magnified image is the product of the height of the original image and the scale factor.

h=15(7) cm.

Simplify.

h=105 cm.

The width of the magnified image is the product of the width of the original image and the scale factor.

w=15(5) cm.

Simplify.

w=75 cm.

So, the perimeter is

P=2(75)+2(105) cm.

Simplify.

P=360 cm.

Therefore, the perimeter of the painting is 360 cm.

Answer:

50

Step-by-step explanation:

3745 divided by 75 = 49.93

Round to 50

Hope this helped :)

Answer:

8199.56 inches²

Step-by-step explanation:

A=2πd

2h+2π(d

2)2=2·π·30

2·72+2·π·(30

2)2≈8199.55683in

Answer:

C is equal to any number that is greater than 16.

Step-by-step explanation:

1. c - 12 > 4

2. c > 16

Answer:

the length in ft would be 0.52 but im not entirely sure hope this helps!

Step-by-step explanation:

Answer:

15/40 or simplified 3/8

Step-by-step explanation:

Answer: heyaa!!

Step-by-step explanation:

Simplify the expression.

Hopefully this helps you <3

- Matthew :)

Answer: B. 288m 2

Step-by-step explanation:

A = 2 (wl+hl+hw)

2 · (4 · 16 + 4 · 16 +4 · 4) = 288m 2

Answer:

13188mm^2

Step-by-step explanation:

D=60mm
H=136mm
L=140mm
then v=1/3xd^2x h= 1/3x3.14x60^2x136
SA=tc pl/2
=3.14x60x140= 13188mm^2
hope this helps!

Answer:

See below

Step-by-step explanation:

Sum of ingredients = sum of final solution

.50 x      where x =   50 percent amount    then 40 - x = 18% amount

.50 x    + .18(40 - x)   =   .30 ( 40 )

.50 x   + 7.2 - .18x  =   12

.32x  = 4.8

x = 15 L of 50%     25 liters of 18%

Hi!

Given these two equations:

[tex]x = y + 8[/tex]

[tex]x + 4 = 2(y + 4)[/tex]

We want to solve using the substitution method. Knowing that x is equal to y + 8, we can simply plug in 'y + 8' in for x in the second equation, like so:

[tex](y+8)+4=2(y+4)[/tex]

Combine like terms on both sides:

[tex]y+12=2y+8[/tex]

Subtract y from both sides:

[tex]12=y+8[/tex]

Subtract 8 from both sides:

[tex]y=4[/tex]

Now, we can simply plug the y value in to the first equation, and solve for x:

[tex]x=4+8[/tex]

Simplify:

[tex]x=12[/tex]

Learn more about the substitution (and also elimination!) method here:

https://brainly.com/question/14619835

531,441

solution:

Multiply.

(9²)³

Multiply 9².

9 x 9

9² the 2 means multiply to itself.

so 9x9 is equal to (81)³

Now multiply it again

81 x 81 x 81

= 531,441

Answer:

6

Step-by-step explanation:

1 /4 x^2 = 9     (Given)         Multiply both sides of the equation by 4

x^2 = 36               sq rt both sides

x = 6

Answer:

11t² + 7t + 3

Step-by-step explanation:

⇒ (5t² + 4) - (6t² - 7t + 1)

⇒ 5t² + 4 - 6t² + 7t - 1

⇒ 11t² + 7t + 3

Answer:  [tex]-t^2 + 7t + 3\\\\[/tex]

Work Shown:

[tex](5t^2 + 4) - (6t^2 - 7t + 1)\\\\5t^2 + 4 - 6t^2 + 7t - 1\\\\(5t^2 - 6t^2) + 7t + (4-1)\\\\-t^2 + 7t + 3\\\\[/tex]

To write the equation in standard form

 ⇒ must know the standard form:

    ⇒ Ax + By = C

       ⇒ essentially move all the variables to one side and constant to

            the other

Let's solve:

 [tex]y = 3x + 4\\-3x+y=4[/tex]

Standard form: [tex]-3x+y=4[/tex]

Answer: [tex]-3x+y=4[/tex]

Hope that helps!

Answer:

Height = 10 cm

Step-by-step explanation:

To find the height of the rectangular prism, we need to use the volume equation of rectangular prisms:

V = l * w * h

l = length

w = width

h = height

We know the length (12.5 cm), width (7.5 cm), and the volume (937.50 [tex]cm^{3}[/tex]).

Plug all these into the equation and solve for the height:

937.50 = (12.5)(7.5)h

937.50 = 93.75h                           Multiply 12.5 by 7.5

10 = h                                             Divide 937.50 by 93.75 to get h.

Therefore, the height of the rectangular prism is 10 cm.

Let's check our answer by plugging all values into the volume equation:

937.50 = (12.5)(7.5)(10)

937.50 = 93.75 (10)                      

937.50 = 937.50                           Both values are equal so 10 is correct!

I hope this helps! Good luck!

Answer:

x = 12

Step-by-step explanation:

In order for these lines to be parallel:

5x = 4x + 12

x = 12

Hope this helps

Answer:

168 inches

Step-by-step explanation:

To find the fence made each day by Libby, we will divide 56 by 4.

convert the length of fence into inches.

1 foot = 12 inches.

Answer:7/18

Step-by-step explanation:

P(R) =4/18

P(Y)= 3/18

BOTH = 4/18 + 3/+18

Answer:

increase

Step-by-step explanation:

CONCLUSION: Median will increase if the number 71 replaced one of the 67's in the set.