All categories

3 years ago

Show work

Mathematics

1 answer:

Maru [420]3 years ago

7 0

Area of circle = πr²
Area of circle = π x 12 x 12
Area of circle = 452.4cm² (nearest tenth)

You might be interested in

Sonja [21]

Answer:

Volume: 1135.82 yd³

Surface Area: 657.12 yd²

Step-by-step explanation:

V = whl

12.2 · 9.8 · 9.5

1135.82

A = 2(wl + hl + hw)

2 · (12.2 · 9.5 + 9.8 · 9.5 + 9.8 · 12.2)

657.12

3 0

3 years ago

When doing simple math, what does the term PEMDAS mean?

USPshnik [31]

Answer:

p- perentathis ( )

E- exponints

M- Multiplication

D- divishion

A-addition

s- subtraction

( sorry about my spelling)

8 0

3 years ago

Read 2 more answers

A = {3, 5, 7, 9} and B = {1, 2, 4, 6, 7, 9}

Zigmanuir [339]

The first option, {7, 9}

4 0

3 years ago

Solve using the quadratic formula. Show all work. Write each solution in simplest form. No decimals.

BabaBlast [244]

Answer:

Step-by-step explanation:

We want to solve the equation:

$x^2+2x+7=0$

Using the quadratic formula. The quadratic formula is given by:

$\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

In this case, a = 1, b = 2, and c = 7.

Substitute:

$\displaystyle x=\frac{-(2)\pm\sqrt{(2)^2-4(1)(7)}}{2(1)}$

Evaluate:

$\displaystyle x=\frac{-2\pm\sqrt{-24}}{2}$

Simplify the square root:

$\sqrt{-24}=\sqrt{4\cdot 6\cdot -1}=\sqrt{4}\cdot\sqrt{6}\cdot\sqrt{-1}=2i\sqrt{6}$

Hence:

$\displaystyle x=\frac{-2\pm2i\sqrt{6}}{2}$

Simplify:

$\displaystyle x=-1\pm i\sqrt{6}$

Hence, our solutions are:

$\displaystyle x=\left\{-1+i\sqrt{6}, -1-i\sqrt{6}\right\}$

Our answer is C.

3 0

2 years ago

Write down a decimal between 75% and 80%

Vlad [161]

.76 .77 .78 .79 is a few

7 0

3 years ago