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3 years ago

Graph the quadratic function f(x)= -2x^2-3x+2

Mathematics

1 answer:

schepotkina [342]3 years ago

4 0

Answer:

it would be the graph with the maximum (opening down) in the first photo with the top on the left side of the y axis

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Find the sum of the first 8 terms of the series. 1/2 + 1 + 2 + 4

Roman55 [17]

$\bf \cfrac{1}{2}~~,~~\stackrel{2\cdot \frac{1}{2}}{1}~~,~~\stackrel{2\cdot 1}{2}~~,~~\stackrel{2\cdot 2}{4}~~,...$

so as you can see the common ratio is 2, and the first term is 1/2,

$\bf \qquad \qquad \textit{sum of a finite geometric sequence} \\\\ S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad \begin{cases} n=n^{th}\ term\\ a_1=\textit{first term's value}\\ r=\textit{common ratio}\\ ----------\\ r=2\\ a_1=\frac{1}{2}\\ n=8 \end{cases} \\\\\\ S_8=\cfrac{1}{2}\left( \cfrac{1-2^8}{1-2} \right)\implies S_8=\cfrac{1}{2}\left( \cfrac{-255}{-1} \right)\implies S_8=\cfrac{255}{2}$

4 0

3 years ago

Read 2 more answers

A bag has 2 blue marbles 3 red marbles and 5 white marbles. Which event has a probability greater than 1/5 select three options

Evgesh-ka [11]

Answer:

all

Step-by-step explanation:

all of them has the probability

4 0

3 years ago

9 Josie parents opened a college

mixer [17]

Answer:

$1,281.00

Step-by-step explanation:

We start by calculating the value $50 added each month after the first month

= $50 × 11

= $550

Calculation:

First, converting R percent to r a decimal

r = R/100 = 5.5%/100 = 0.055 per year.

P = Principal = 500 + 550

= $1050

Calculation:

First, converting R percent to r a decimal

r = R/100 = 5.5%/100 = 0.055 per year.

Solving our equation:

A = 1050(1 + (0.055 × 4)) = 1281

A = $1,281.00

Therefore, there would be $1,281.00 after 4 years.

6 0

3 years ago

Find the value of the variable in each expression

bogdanovich [222]

Answer:

they're all 0

Step-by-step explanation:

N/A

6 0

2 years ago

Select the graph which correctly displays the function f(x) = |x + 2|– 3.

Veronika [31]

Answer:

Graph 4

Step-by-step explanation:

I have to put more words lol

5 0

2 years ago