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3 years ago

2x3-16x2+30x=0 i need help asap! asap!!! help me please

Mathematics

1 answer:

Vladimir79 [104]3 years ago

6 0

Answer:

x=0, x=3, x=5

Step-by-step explanation:

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Which is the smallest fraction represented? A: 8/9 B: 5/9 C: 2/9 D: 1/9

matrenka [14]

Answer:

Step-by-step explanation:

when fractions have the same whole which here is 9 you can just look at the first letters

so one is the smallest

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3 years ago

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Which graph shows a proportional relationship between the number of hours of renting a snowboard and the total amount spent to r

nadya68 [22]

Answer:

See the attachment.

Step-by-step explanation:

The line of a proportional graph always passes through the point of origin, (0, 0).

Also, a proportional graph is a straight line that do not bend.

Therefore, the graph that shows the proportion is the first graph. See attachement.

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3 years ago

Don't write it seems to smart

sergeinik [125]

I think you miss types your question

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4 years ago

In your Pre-Calc class 60% of the students have brown hair, 30% have brown eyes and 10% have both brown hair and brown eyes. A s

maria [59]

Probability of the students having brown hair = 0.6

Probability of the students having brown eyes = 0.3

Probability of the students having both brown hair and brown eyes = 0.1

Step-by-step explanation:

Step 1 :

Given,

Percentage of the students having brown hair = 60%

Percentage of the students having brown eyes = 30%

Percentage of the students having both brown hair and brown eyes = 10%

We need to obtain the probability of each separately, when a student is chosen randomly

Step 2 :

The probability of each event happening given its percentage, can be obtained by dividing the corresponding percentage by 100.

Hence we have,

Probability of the students who have brown hair = $\frac{60}{100}$ = 0.6

Probability of the students who have brown eyes = $\frac{30}{100}$ = 0.3

Probability of the students who has both brown hair and eyes = $\frac{10}{100}$ = 0.1

Step 3 :

Answer :

Probability of the students who have brown hair = 0.6

Probability of the students who have brown eyes = 0.3

Probability of the students who has both brown hair and eyes = 0.1

4 0

4 years ago

What is the domain of the function f(x) = x^2 + 3x + 5?

Galina-37 [17]

We need to have (x^2 - 3x + 2) ≥ 0

That is the same as (x - 2) * (x - 1) ≥ 0 

This happens when both (x - 2) and (x - 1) ≥ 0, which is when x ≥ 2 and when x ≥ 1, so it happens when x ≥ 2. 

It also happens when they are both ≤ 0, which is when (x - 2) and (x - 1) are both ≤ 0. That happens when x ≤ 2 and when x ≤ 1, in other words, when x ≤ 1 

Therefore the domain is {x is real and either x ≤ 1 or x ≥ 2 <---- Answer 

For x in (1,2) (x-2 is negative) and (x - 1) is positive, so their product is negative.

6 0

4 years ago