If A+B=76 and A -B=38 whats A divided by B

Answers

Answer 1

Answer: $+\left\{\begin{array}{ccc}A+B=76\nA-B=38\end{array}\right\n---------\n.\ \ \ \ \ \ \ 2A=114\ \ \ \ /:2\n.\ \ \ \ \ \ \ \ A=57\n\n\left\{\begin{array}{ccc}A=57\nA+B=76\end{array}\right\n\left\{\begin{array}{ccc}A=57\n57+B=76\end{array}\right\n\n\left\{\begin{array}{ccc}A=57\nB=76-57\end{array}\right\n\left\{\begin{array}{ccc}A=57\nB=19\end{array}\right\n$

$A:B=57:19=3$

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What is a proportional relationship

Answers

The relationship between two datas which are proportional to each other in some manner is called "Proportional Relationship".

For example, oranges are sold in a bag of 5 for $2.The ratio of oranges to their cost is 5:2 or . If I bought 20 oranges, Icould set up a proportion to determine my cost.

The volume of a hemisphere is 144 pi. Find the radius and total surface area.

Answers

Formula of the Volume of a hemisphere:
V = $(2)/(3)$ $\pi$ r³
144 $\pi$ = $(2)/(3)$ $\pi$ r³
Multiply by 3 to cancel fraction in the right side
144 $\pi$ × 3 = 2 $\pi$ r³
432 $\pi$ = 2 $\pi$ r³
Divide by 2 $\pi$ on either sides to isolate r³
$(432 \pi )/(2 \pi )$ = $(2 \pi )/(2 \pi )$ r³
2 $\pi$ and $2 \pi$ cancel out
216 = r³
Take cube root to find the radius
$\sqrt[3]{216}$ = $\sqrt[3]{r^3}$
6 = r
Radius is 6 units

The formula of the surface area of a hemisphere is:
S.A = 2 $\pi$ r² + $\pi$ r²
= $2\pi$ (6)² + $\pi$ (6)²
=2 $\pi$ × 36 + 36 $\pi$
= 72 $\pi$ + 36 $\pi$
= 108 $\pi$ units² (in terms of $\pi$ )
≈ 339.12 units²

Surface area = 108 $\pi$ units

Add 5/9 + 7/12 .Enter your answer below as a fraction in lowest terms, using theslash (/) as the fraction bar.

Answers

Answer:

1 5/36

Step-by-step explanation:

need a common denominator which would be 36

to get from 9 to 36 you multiply by 4 so 5 would be multiplied by 4 to get the fraction 20/36

do the same with 7/12 12x3 is 36 and 7x3 is 21 so 21/36

then add 20+21=41

put over 36 41/36

Find if you can lower it which you can:

41 is bigger than 36 by 5 so your ending fraction would be 1 and 5/36 because 5 and 36 don't have a common factor.

Solve - 2x - 8> 3x + 12.
Please help!

Answers

Answer:

B. X < -4

Step-by-step explanation:

-2x - 8 > 3x + 12

Subtract 3x from both sides

-5x -8 > 12

Add 8 both sides

-5x > 20

Divide -5 both sides

X < -4

Answer: x < -4

Step-by-step explanation:

Subtract 3x from both sides

-5x - 8 > 12

Add 8 to both sides

-5x > 20

Divide both sides by -5

x < -4

The area of the diagonal section of a cube is equal to 36Ì2. Determine the edge and the diagonal of the cube.? please help me thank you :)

Answers

The answer is the edge of the cube is 6 and the diagonal of the cube is 6√3

The diagonal section of a cube is a rectangle with sides a and x, where a is the edge of the cube, and x is a diagonal of a side of the cube. Therefore, the area of a diagonal section (A) is:
A = a * x
Now, a = ? and x = ?, but we know that the side of the cube is square and its diagonal is x = a√2.

So, we have:
A = 36√2
a = ?
x = a√2

Let's substitute all parameters in the formula for the area:
A = a * x
36√2 = a * a√2

Divide both sides by √2:
36 = a * a
36 = a²
⇒ a =√36 = 6

The diagonal of the cube can be calculated by using the formula: d = a√3
Since a = 6, then:d = 6√3

Therefore, the edge of the cube is 6 and the diagonal of the cube is 6√3.

Evaluate 4 + (-2) - (-3) -6

Answers

-30, so if it’s multipl

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