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2 years ago

I need help- ;-; Please help me-

Mathematics

2 answers:

dalvyx [7]2 years ago

7 0

Graph A
it shows two points for each x, meaning its not a function.

Agata [3.3K]2 years ago

4 0

Graph A

In graph a the input X has more than one output Y

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A marketing firm tracks data on grocery store visits. In one study, it finds that the probability that a shopper buys bread duri

timurjin [86]

Answer:

Option B.

Step-by-step explanation:

Two events are said to be independent of each other, if the probability of one event ocurrin in not way affects the probability of the other event occurring.

The interception of two independent events P(A ∩ B) = P(A) × P(B), where:

P(A) = 0.70

P(B) = 0.20

P(A ∩ B) = P(A) × P(B) = 0.70x0.20 = 0.14

The two events are independent if the probability of buying Bread AND cheese equals: 0.14, which is Option B.

7 0

3 years ago

Read 2 more answers

An object moves 100 m in 4 s and then remains at rest for an additional 1 s.

nydimaria [60]

Answer:

20 m per second

Step-by-step explanation:

100 / 5 = 20

8 0

2 years ago

150 people in 5 classes

Firdavs [7]

150 = 5 classes
1 class = 30

4 0

3 years ago

6,528 divided by 8 and also 6,349 divided by 9

mote1985 [20]

Answer:

6,528 divided by 8 is 816

6528/8 = 816

6348 divide by 9 is 705.44..... ♾️

7 0

2 years ago

(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x

Aliun [14]

As

$\tan x=\dfrac{\sin x}{\cos x}$
$\cot x=\dfrac{\cos x}{\sin x}$

we have

$\sin x(\tan x\cos x-\cot x\cos x)=\sin x\left(\sin x-\dfrac{\cos^2x}{\sin x}\right)=\sin^2x-\cos^2x$

Recalling that $\cos2x=\cos^2x-\sin^2x$ , we end up with

$-\cos2x=1-2\cos2x$
$1=\cos2x$
$\implies2x=2n\pi$

(where $n$ is any integer)

$\implies x=n\pi$

5 0

3 years ago