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TEA [102]
3 years ago
5

What are four kinds of parabolas

Mathematics
1 answer:
patriot [66]3 years ago
3 0
Solutions 

<span>A right handed parabola: </span>y^2=4ax<span><span>

</span></span>A left handed parabola: y^2=-4ax<span>

</span>An up facing parabola: x^2=4ay<span>

</span>A down facing parabola: x^2=-4ay
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Sally identified the terms of the expression 9a + 4b - 18 as 9, 4, and 18. Explain her error.
nordsb [41]

A term is a single mathematical expression. It may be a single number (positive or negative), a single variable (a letter), several variables multiplied but never added or subtracted. Some terms contain variables with a number in front of them. The number in front of a term is called a coefficient.

So the terms are 9a, 4b, and 18.

hope it helps!

3 0
3 years ago
Read 2 more answers
4.8.4 Raw materials are studied for contamination. Suppose that the number of particles of contamination per pound of material i
forsale [732]

Answer:

700 lbs and 3.742

Step-by-step explanation:

Given that raw materials are studied for contamination. Suppose that the number of particles of contamination per pound of material is a Poisson random variable with a mean of 0.02 particle per pound.

a) To get 14 particles of contamination we must have

expected number of pounds = \frac{14}{0.02} \\=700

b) Since for 700 pounds particles expected are 14 we can say in  a Poisson distribution mean and variance are equal

i.e. Var (700 lbs to obtain 14 particles of contamination ) = 14

Std deviation =\sqrt{14} =3.742

5 0
3 years ago
Describe in words where the square root of 50 minus 10 would be plotted on a number line.
Dafna1 [17]

The required value lies Between 6 and 7, but closer to 6. Option C is correct.

Given that,
The square root of 50 minus 10 would be plotted on a number line.

<h3>What is a number line?</h3>

A number line is defined as the number marked on the line calibrated into an equal number of units. For example -1, 0, 1, and so on.

According to the question,
= √[50-10]
= √40
= 6.32
Which is closer to 6.

Thus, the required value lies Between 6 and 7, but closer to 6. Option C is correct.

Learn more about number line here:

brainly.com/question/17683084

#SPJ1

3 0
1 year ago
Rewrite the following quadratic functions in intercept or factored form. Show your work.
Vlad [161]

Answer:

y = (2x + 3)(2x + 3) = (2x + 3)²

Step-by-step explanation:

We are given a quadratic function and we have to write it in factored form.

y = 9 + 12x + 4x²

y = 4x² + 12x + 9

We can break the mid-term in such a way that when they are multiplied, the factors give a product of 36x² and when added, they give a result of 12x, as show below:

y = 4x² + 6x + 6x + 9

Taking 2x common from the first two variables and 3 from the second two

y = 2x(2x + 3) + 3(2x + 3)

Taking 2x+3 common

y = (2x + 3)(2x + 3) = (2x + 3)²

3 0
3 years ago
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The average heart rate of a cat is one-third of the hamster heart rate the average heart rate of the cat is 150 beats per minute
Darina [25.2K]
Wait how much is the average hamster heart rate
6 0
3 years ago
Read 2 more answers
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