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emmainna [20.7K]

3 years ago

10

The diameter of a circular swimming pool is 15 feet. Find the circumference.

1 answer:

Nuetrik [128]3 years ago

7 0

47.12
I did this last year :))

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A polyhedron has the following characteristics. Find the missing value.

Eduardwww [97]

<span>Formula : V + F – E = 2
where V = number if vertices, F = number of faces and E = number of edges

<u>Question a:</u>

V + F - E = 2
V = 2 - F + E
V = 2 - 12 + 18
V = 8

(a) </span><span>12 faces, 18 edges, <u>8</u> vertices

<u>Question b:</u>

</span>V + F - E = 2
<span>E = V+ F - 2
E = 14 + 8 - 2
E = 20

(b) </span><span>8 faces, <u>20</u> edges, 14 vertices</span>

6 0

3 years ago

Find the length of the third side. If necessary, write in simplistic radical form.

____ [38]

Answer:

7

Step-by-step explanation:

Just use the Pythagorean Theorem ( $a^{2}$ + $b^{2}$ = $c^{2}$ )

Let a be the missing side

$a^{2}$ = $8^{2}$ - $\sqrt{15} ^{2}$

$a^{2}$ = $64$ - $15$

$a^{2}$ = $49$

Take the square root of each side

$a$ = $\sqrt{49}$

$a$ = $7$

So the missing side is 7.

Hope this helps! :)

8 0

3 years ago

$43,000 at 11% for 4 years

love history [14]

Answer:

18920

Step-by-step explanation:

43000*(11/100)*4

6 0

3 years ago

siniylev [52]

Answer:

a. -6

b. -4

c. 8

d. -20

e. 7

f. -10

g. 8

h. 12

i. -12

j. 5

3 0

3 years ago

The equation for line j can be written as y=2x + 8. Another like k is perpendicular to line j and passes through the point (6,-6

Semmy [17]

Answer:

B

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 2x + 8 ← is in slope- intercept form

with slope m = 2

Given a line with slope m then the slope of a line perpendicular to it is

$m_{perpendicular}$ = - $\frac{1}{m}$ = - $\frac{1}{2}$ , thus

y = - $\frac{1}{2}$ x + c ← is the partial equation

To find c substitute (6, - 6) into the partial equation

- 6 = - 3 + c ⇒ c = - 6 + 3 = - 3

y = - $\frac{1}{2}$ x - 3 ← equation of line k

7 0

3 years ago