All categories

3 years ago

Help me with this please

Mathematics

1 answer:

Len [333]3 years ago

8 0

Answer:

The first one is a function because, for each x-value (domain value) there is exactly one y-value (range value).

The second one is not a function because, not each x-value (domain value) has exactly one y-value (range value). The domain value of 5 has two range values of 13 and 9.

You might be interested in

HELPPP ME PLEASE ITS DUE TODAY!!!!

maksim [4K]

Answer:

d = -4.7

Step-by-step explanation:

d + 0.7 = -4

subtract 0.7 from both sides

d + 0.7 = -4

- 0.7 -0.7

d = -4.7

4 0

3 years ago

Read 2 more answers

What are the x-intercepts of f(x)=x^3+4x^2-9x-36

Karolina [17]

The zeros are (-4,0),(-3,0),(3,0)

8 0

3 years ago

Y = 6x + 11 2х - Зу = 7

irakobra [83]

9514 1404 393

Answer:

(x, y) = (-2.5, -4)

Step-by-step explanation:

Since you are given an expression for y, it is convenient to substitute that into the second equation.

2x -3(6x +11) = 7

2x -18x -33 = 7

-16x = 40 . . . . . . add 33

x = -40/16 = -2.5

Using the equation for y, we find ...

y = 6(-2.5) +11 = -15 +11 = -4

The solution is (x, y) = (-2.5, -4).

8 0

3 years ago

PLZ I NEED HELP AND I DON"T KNOW THE ANSWER!!

ddd [48]

Answer:

Step-by-step explanation:

$ 3750 = truck rental; $125 per ton of sugar transported

C is cost; S is number of tons transported

Equation relating C to S would be a linear equation like y = mx + b

C = 125S + $3750

This equation would be graphed in the first quadrant only

you would start with your y-intercept at (0, 3750)

As x increases by 1, your y increases by 125 yielding these points:

(1, 3875) (2, 4000) (3, 4125) etc.

This shows that for each increase by one ton of sugar, the cost goes up $125

1)Cost of 1 ton = $ 2000

Cost of 2 ton = $3500

Cost of 3 ton = $5000

$ 1500 increase for each of ton of sugar being transported.

2) (1 , 2000) ; (2 , 3500)

Slope =

= 1500

6 0

3 years ago

Consider a binomial experiment with n = 4 trials where the probability of success on a single trial is p = 0.25. (For each answe

telo118 [61]

Answer:

(a) $\approx$ 0.32

(b) $\approx$ 0.68

Step-by-step explanation:

It is given that a binomial experiment is carried out.

n = 4 trials

Probability of success, p = 0.25

We know that in a binomial experiment:

Probability of success + Probability of failure = 1

p + q = 1

So, q = 1 - 0.25 = 0.75

Probability of 'r' number of successes in 'n' trials of a binomial experiment is given as:

$P(r=x) = _nC_x\times p^x(q)^{n-x}$

(a) P(r = 0) = ?

Putting values of x = 0, p and q:

$P(r=0) = _4C_0\times (0.25)^0\times (0.75)^{4-0}\\P(r=0) = 1\times 1\times (0.75)^{4}\\P(r=0) \approx 0.32$

(b) Find P(r ≥ 1) = ?

Using complement rule:

P(r =0 ) + P(r ≥ 1) = 1

0.32 + P(r ≥ 1) = 1

P(r ≥ 1) = 1 - 0.32

P(r ≥ 1) = 0.68

So, the answer are:

(a) $\approx$ 0.32

(b) $\approx$ 0.68

5 0

3 years ago