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3 years ago

If y=3x - 6 and x=7, then y = ??

Mathematics

1 answer:

Hunter-Best [27]3 years ago

6 0

Answer:

y=15

Step-by-step explanation:

y=21 - 6

y = 15

hope this helped!

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Use Bayes' rule to find the indicated probability. The incidence of a certain disease on the island of Tukow is 4%. A new test h

lina2011 [118]

These are the events in the question above:

D - has disease

H - healthy (does not have disease)

P - tests positive 

It is the probability that a person has the disease AND tests positive divided by the probability that the person tests positive.

Sick, + [.04*.91] = .0364

Sick, - [.04*.09] = .0036 

Healthy, + [.96*.04] = 0.0384

Healthy, - [.96*.96] = .9216


.0364 / (.0364 + .0.0384) = 0.487

7 0

4 years ago

5/8-3/4(8-1/3)+1 what is this

notsponge [240]

Answer: ((5 / 8) - ((3 / 4) (8 - (1 / 3)))) + 1

-4.125

Step-by-step explanation:

6 0

3 years ago

Which statement is true about the end behavior of the graphed function?

tatyana61 [14]

The correct answer is:

A) as the x-values go to positive infinity, the functions values go to negative infinity.

Explanation:

We can see in the graph that the right hand portion continues downward to negative infinity. The right hand side of the graph is "as x approaches positive infinity," since x continues to grow larger and larger. This means as x approaches positive infinity, the value of the function approaches negative infinity.

8 0

3 years ago

Read 2 more answers

Simplify the fraction and state the excluded value(s).

stira [4]

Answer:

$\displaystyle \frac{7x^2 + 4x - 20}{5x + 10} = \frac{7x - 10}{5}, x \neq -2$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Terms/Coefficients

Factoring

Calculus

Discontinuities

Removable (Holes)
Jump (Piece-wise functions)
Infinite (Asymptotes)

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{7x^2 + 4x - 20}{5x + 10}$

Step 2: Simplify

[Frac - Numerator] Factor quadratic: $\displaystyle \frac{(7x - 10)(x + 2)}{5x + 10}$
[Frac - Denominator] Factor GCF: $\displaystyle \frac{(7x - 10)(x + 2)}{5(x + 2)}$
[Frac] Divide/Simplify: $\displaystyle \frac{(7x - 10)}{5}, x \neq -2$

When we divide (x + 2), we would have a removable discontinuity. If we were to graph the original function, we would see at x = -2 there would be a hole in the graph.

8 0

3 years ago

Complete the square to make a perfect square trinomial. Write the result as a binomial square. q2−23q

tia_tia [17]

Answer:

$\left(q-\dfrac{23}{2}\right)^2$