All categories

2 years ago

You are doing a case study of the death of John F Kennedy. You employ many data collection methods in

Mathematics

1 answer:

k0ka [10]2 years ago

4 0

Answer:

B. Of the people surveyed that were alive at the time, 90% of them knew exactly where they were when they heard the news.

Step-by-step explanation:

You might be interested in

Simplify. 32 + 1 x 2 (1).8 (2).20 (3).14 (4).11

pshichka [43]

Answer:

31.11

Step-by-step explanation:

simplify the expression

4 0

2 years ago

How to attach image sure sure

Bogdan [553]

Answer:

Press the kinda paper clip thing it says attach file then press that

Step-by-step explanation:

3 0

1 year ago

Plz help me well mark brainliest if correct!!..

zepelin [54]

Answer: A/The LINE graph

Step-by-step explanation:

6 0

2 years ago

Solve for x : log(3x) + log(x + 4) = log(15). Please explain it to me.

zlopas [31]

Answer:

x = 1

Explanation:

$\sf \rightarrow log(3x) + log(x + 4) = log(15)$

Rule: log(a) + log(b) = log(ab)

$\sf \rightarrow log(3x(x + 4)) = log(15)$

cancel out log on both sides

$\sf \rightarrow 3x(x + 4) = 15$

relocate constant variable

$\sf \rightarrow 3x^2 + 12x -15 = 0$

take 3 as a common factor

$\sf \rightarrow 3(x^2 + 4x -5) = 0$

divide both sides by 3

$\sf \rightarrow x^2 + 4x -5 = 0$

middle term split

$\sf \rightarrow x^2 + 5x -x-5 = 0$

factor common terms

$\sf \rightarrow x(x + 5) -1(x+5)= 0$

collect into groups

$\sf \rightarrow (x-1)(x+5)= 0$

set to zero

$\sf \rightarrow x-1 = 0 , \ x+5= 0$

relocate variables

$\sf \rightarrow x = 1, \ x = -5$

There must be a positive solution for log, so the solution is only x = 1

3 0

1 year ago

Read 2 more answers

Help meeee i need this right now!!!! 2+2÷( <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B72%7D%20" id="TexFormula1" titl

Andre45 [30]

Answer:

$\frac{1}{3} \sqrt{2}$ or 0.471405

Step-by-step explanation:

$\frac{(2)(2)}{\sqrt{72} }$

8 0

2 years ago