One question at a time, please. I will focus on #16 and ignore #18.

slope: 3/4 line passes thru (-8,2)

Write out y = mx + b. Subst. 2 for y. Subst. -8 for x Subst. (3/4) for m:

2 = (3/4)(-8) + b. Find b. 2 = -6 + b => b = 8

So your equation is y = (3/4)x + 8. Please, use ( ) around those fractions!

3 0

2 years ago

Will give 25 points and brainliest answer if correct

Norma-Jean [14]

Let $d$ be the common difference between terms in the sequence $\{a_n\}_{n\ge1}$ . Then

$a_{19}=-58$
$a_{20}=a_{19}+d$
$a_{21}=a_{19}+2d$
$\implies-164=-58+2d\implies d=-53$

The first term in the sequence, $a_1$ , satisfies

$a_2=a_1+d$
$a_3=a_1+2d$
$a_4=a_1+3d$
...
$a_{19}=a_1+18d$
$\implies-58=a_1+18(-53)\implies a_1=896$

So the explicit formula for the $n$ -th term in the sequence is

$a_n=a_1+(n-1)d\implies a_n=896-53(n-1)$

5 0

3 years ago

d) If the circumference of the circular base of a cone is 44 cm and its height is 30 find its volume.

lana66690 [7]

Answer:

CSA =220sq.cm

Step-by-step explanation:

3 0

2 years ago