All categories

3 years ago

How are circles similar

Mathematics

1 answer:

qaws [65]3 years ago

4 0

Answer:

No matter how big or small they are, they all have the same surface area, and they can't be changed.

You might be interested in

If f(x) = |x|+ 9 and g(x) = -6, which describes the value of (f + g)(x)?

ohaa [14]

Answer:

(f+g)(x) > 3 for all values of x

4 0

3 years ago

You bought 50 shares of stock at $55 per share and sold them for $61 per share. The sale involves a broker’s commission of $0.30

malfutka [58]

Answer:

The profit made is;

b) $285)

Step-by-step explanation:

The given parameters are;

The number of shares bought, n = 50

The price each share is bought, CP = $55

The amount at which each share is sold, SP = $61

The amount the broker received per share, E = $0.30

Therefore, the amount of profit, 'P', is given as follows;

P = n × (SP - CP - E)

By substituting the values for the variables, we have;

P = 50 × (61 - 55 - 0.3) = 285

The amount made as profit, P = $285.00.

6 0

3 years ago

How do you find the area of the shaded region

Amiraneli [1.4K]

well, first off, let's notice that we have a trapezoid with a rectangle inside it, so the rectangle is really "using up" area that the trapezoid already has.

now, if we just get the area of the trapezoid, and then the area of the rectangle alone, and then subtract that area of the rectangle, the rectangle will in effect be making a hole inside the trapezoid's area, and what's leftover, is the shaded section, that part the hole is not touching.

$\bf \textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}~~ \begin{cases} h&=height\\ a,b&=\stackrel{parallel~sides}{bases} \\\cline{1-2} h&=8\\ a&=16\\ b&=8 \end{cases}\implies A=\cfrac{8(16+8)}{2}\implies A=96 \\\\\\ \stackrel{\textit{area of the rectangle}}{(5\cdot 3)\implies 15}~\hfill \stackrel{~\hfill \textit{shaded area}}{\stackrel{\textit{trapezoid}}{96}~~ - ~~\stackrel{\textit{rectangle}}{15}~~ = ~~81}$

3 0

3 years ago

Work out the area of triangle ABC.

AleksAgata [21]

Answer:

A = 4 cm²

Step-by-step explanation:

The area of a triangle is calculated as

A = $\frac{1}{2}$ bh ( b is the base and h the perpendicular height )

b = AC = 3 $\sqrt{2}$ + $\sqrt{2}$ = 4 $\sqrt{2}$

h = BD

Calculate BD using Pythagoras' identity in Δ ABD

BD² = AB² - AD²

= (2 $\sqrt{5}$ )² - (3 $\sqrt{2}$ )²

= 20 - 18 = 2 ( take square root of both sides )

BD = $\sqrt{2}$

Then

A = $\frac{1}{2}$ × 4 $\sqrt{2}$ × $\sqrt{2}$ = 2 × $\sqrt{2}$ × $\sqrt{2}$ = 4 cm²

8 0

3 years ago

I'm so dumbbbbbbbbbb

romanna [79]

Answer:

3 3/8 cups of flour

Step-by-step explanation:

So, we know that 2 1/4 is the normal amount of flour you would use in the recipe. but you don't want to do normal. You want to make 1 1/2 times more than you usually do.

To do this, first figure out what half of 2 1/4 is.

(2 1/4) /2 = 1 1/8

Then, because you are looking to use 1 1/2 times more flour, simply add the 1 1/8 to the 2 1/4

You end up using 3 3/8 cups of flour.

5 0

3 years ago