2 years ago

PLSSS HELP ASAP WILL GIVE BRAINLIEST Solve by completing the square: 5x² + 20x + 32 = 0

Mathematics

1 answer:

katen-ka-za [31]2 years ago

3 0

Answer:

5x2 + 20x + 32 = 0 - 16977324

Step-by-step explanation:

You might be interested in

2. People ride in a mini-bus from the hotel to the airport. Sixty people need to go to the airport, and they are going to ride i

asambeis [7]

Answer:

20 people will ride each bus

Step-by-step explanation:

60 people, and 3 buses

you would divide 3 by 60

4 0

2 years ago

Read 2 more answers

A chemist examines 15 geological samples for potassium chloride concentration. The mean potassium chloride concentration for the

Lelu [443]

Answer:

95% Confidence interval: (0.375,0.377)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = 0.376 cc/cubic meter

Sample size, n = 15

Alpha, α = 0.05

Sample standard deviation, s = 0.0012

Degree of freedom =

$=n-1\\=15-1\\=14$

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.05} = \pm 2.145$

$0.376 \pm 2.145(\dfrac{0.0012}{\sqrt{15}} )\\\\ = 0.376 \pm 0.0006\\\\ = (0.3754,0.3766)\approx (0.375,0.377)$

(0.375,0.377) is the required 95% confidence interval for the population mean potassium chloride concentration.

5 0

2 years ago

How to find surface area

aivan3 [116]

idk if you seen this but I try this

5 0

2 years ago

Read 2 more answers

List all of the possible outcomes using the table below.

NemiM [27]

Answer:

The four possible outcomes are:

skirt 1, white
skirt 1, black
skirt 2, white
skirt 2, black

Step-by-step explanation:

Skirt 1 can be white or black (two outcomes). Skirt 2 can be white or black (two outcomes). Therefore, there are four possible outcomes.

6 0

2 years ago

Read 2 more answers

Anyone else wanna talk? or be friends?

creativ13 [48]

Answer:

55.4176955.4176955.4176955.41769

Step-by-step explanation:

8 0

2 years ago