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2 years ago

I don’t know how to figure out how many roots is has

Mathematics

2 answers:

Simora [160]2 years ago

8 0

Answer:

1) 3 roots

2) 2 roots

3) 4 roots

Nikolay [14]2 years ago

4 0

Answer:

first one has 3 roots

second one has 2 roots

third one has zero roots

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James surveyed people at school and asked whether they bring their lunch to school or buy their lunch at school more often. The

Brrunno [24]

Answer:

The correct option is 4.

Step-by-step explanation:

Given information:

Bring lunch : 46 males, 254 females

Buy lunch : 176 males, 264 females

Total number of peoples is

$46+254+176+264=740$

Total number of males is

$46+176=222$

The probability of male is

$P(Male)=\frac{Males}{Total}=\frac{222}{740} =0.3$

Since probability of males is 0.3, therefore options A and C are incorrect.

Total number of persons who buys lunch is

$176+264=440$

The probability of persons who buys lunch is

$P(\text{Buys lunch})=\frac{\text{Buys lunch}}{Total}=\frac{440}{740} =\frac{22}{37}$

We need to find the probability of P(male | buys lunch).

According to the conditional probability, we get

$P(\frac{A}{B})=\frac{P(A\cap B)}{P(B)}$

P(male | buys lunch) $=\frac{P(\text{male }\cap \text{ buys lunch})}{P(\text{buys lunch})}$

P(male | buys lunch) $=\frac{\frac{176}{740}}{\frac{22}{37}}$

P(male | buys lunch) $=\frac{2}{5}=0.4$

Therefore the correct option is 4.

8 0

3 years ago

Read 2 more answers

Help! I can’t figure out what the number is.

vekshin1

I think it is 17 because it is non zero

7 0

3 years ago

Prove lines AI and GJ are parallel.

Vanyuwa [196]

Answer:

Step-by-step explanation:

Because line FE creates the same angle (a) when intersecting AI and GJ

6 0

3 years ago

Amy is getting in shape shape for track season. Her coach suggests running a certain number of kilometers each week. Amy runs la

spayn [35]

Divide ‘k’ on both sides, and it will cancel out on one side, isolating ‘d.’ Your formula answer is: n/k=d

6 0

3 years ago

Which cost more per issue, an 18-issue subscription for $40.50 or a 12-issue subscription for $33.60?

Vikentia [17]

<span>So what you would do is you would dived the subscriptions by the cost
Soo...

$40.50/18 =2.25
$33.60/12=2.80

so therefore 12 issue subscriptions for $33.60 would be more
</span>

8 0

3 years ago