All categories

3 years ago

What is the second step in solving this equation by completing the square 3x^2+14x+8=0

1 answer:

8 0

The second step is to keep your x terms on the left and move the constant to the right by subtracting it from both sides.

You might be interested in

Add please -35.25+(8.5)

givi [52]

Answer:

Hello the answer is -23.75

plus +minus=Minus so we will minus it

5 0

3 years ago

Read 2 more answers

Evaluate: 20 Σ 4(8/9)^n-1 = [?] 1 Round to the nearest hundredth.

lianna [129]

Answer:

32.59 (nearest hundredth)

Step-by-step explanation:

Geometric sequence

General form of a geometric sequence: $a_n=ar^{n-1}$

(where a is the first term and r is the common ratio)

Given:

$\displaystyle \sum^{20}_{n=1} 4 \left(\dfrac{8}{9}\right)^{n-1}$

Therefore:

a = 4
r = 8/9

Sum of the first n terms of a geometric series:

$S_n=\dfrac{a(1-r^n)}{1-r}$

To find the sum of the first 20 terms, substitute the found values of a and r, together with n = 20, into the formula:

$\implies S_{20}=\dfrac{4\left(1-\left(\frac{8}{9}\right)^{20}\right)}{1-\left(\frac{8}{9}\right)}$

$\implies S_{20}=32.58609013...$

$\implies S_{20}=32.59\:\: \sf (nearest\:hundredth)$

7 0

2 years ago

Read 2 more answers

May I please receive help

mafiozo [28]

Hello mate ☺️,

We know that m < 2 = 96°, as,

$m < 5 = 96°$ (Alternate angles are equal)

Now we know that m < 5 = 96°, so,

$→ m < 5 + m < 8 = 180°$ (Linear Pair angles are supplementary)

$→ 96° + m < 8 = 180°$

$→ m < 8 = (180 - 96)°$

$→ m < 8 = 84°$

Therefore, m<5 = 96° & m<8=84°

✍️ By Benjemin ☺️

3 0

2 years ago

Plz help I’ll mark you

algol [13]

Answer:

option (B) is the answer

4 0

3 years ago

Is the answer a b c or d ??? kinda need this to pass

Afina-wow [57]

Put the equations in for r and c

p(c)=10x-(4x+15)
put the negaive in
10x-4x-15
6x-15

Answer is C

5 0

4 years ago