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LuckyWell [14K]
3 years ago
15

PLEASE HELP MEEE ASAP

Mathematics
1 answer:
lys-0071 [83]3 years ago
8 0

Step-by-step explanation:

first of all, g(x) has only negative functional result values (y) except for 0.

and a square is always positive.

so, the only possible right answers are the ones that include a minus ("-") sign.

the graph shows us that g(x) goes through the points (1, -3) and (-1, -3).

so, which equation turns an x = 1 into an y = -3 ?

therefore, the right answer must be D.

g(x) = -3x²

it works for both points :

-3 = -3×1² = -3 correct

-3 = -3×(-1)² = -3×1 = -3 correct

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Please help I will give brainliest to whoever answers this question
pantera1 [17]

Hi!

To solve this, we must make an equation in y = mx + b form, where m is the slope and b is the y-intercept.

Since we are looking at a graph with points, it saves us a TON of work, and all we have to do is simply look at the graph. We only need to find m and b, that's it!

M is the slope, and the slope can be represented by the change between points on a line, also known as <em>rise/run. </em>

If we start at point (-4, -1), and go to point (-2, 0), we can see that it goes up 1 and right 2, which would be represented as 1/2.

B is the y-intercept, and that is simply the point that is on the y-axis, which is the point (0, 1), so our number would be 1.

Therefore, plugging these numbers into the equation, our equation is y = <em>1/2</em>x + <em>1</em>

<em></em>

Hope this helps! :D

6 0
2 years ago
Sean b= 5,79; c= 10,4,el angulo A= 54,46°, el angulo C mide ?
Rzqust [24]

Answer:

C \approx 91.732^{\circ}

Step-by-step explanation:

(This exercise is presented in Spanish and for that reason explanation will be held in such language)

El lado restante se determina por la Ley del Coseno:

a = \sqrt{b^{2}+c^{2}-2\cdot b\cdot c \cdot \cos A}

a = \sqrt{5.79^{2}+10.4^{2}-2\cdot (5.79)\cdot (10.4)\cdot \cos 54.46^{\circ}}

a \approx 8.466

Finalmente, el angulo C se halla por medio de la misma ley:

\cos C = - \frac{c^{2}-a^{2}-b^{2}}{2\cdot a \cdot b}

\cos C = -\frac{10.4^{2}-8.466^{2}-5.79^{2}}{2\cdot (8.466)\cdot (5.79)}

\cos C = -0.030

C \approx 91.732^{\circ}

3 0
3 years ago
Which of the following equations represent linear functions?
disa [49]
4x+y=5 or b is the correct answer:) Linear functions are those whose graph is a straight line. A linear function has the following form. y = f(x) = a + bx. A linear function has one independent variable and one dependent variable. The independent variable is x and the dependent variable is y.
3 0
3 years ago
Help Needed <br>-Thanks<br>​
Gelneren [198K]

Answer:

− 2 √ 3

Step-by-step explanation:

Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.

5 0
2 years ago
The time it takes to completely tune an engine of an automobile follows an exponential distribution with a mean of 40 minutes.
Mazyrski [523]

Answer: a. P (x<30) = 0.5276

              b. P (30<x<35) = 0.0555

Step-by-step explanation: An <u>exponential</u> <u>distribution</u> is a distribution of time in which events happens at a constant average rate.

The rate is calculated as

\lambda=\frac{1}{\mu}

with μ as the mean.

The probability density distribution for this type of distribution is

f(x)=\lambda e^{-\lambda x}

And probability is calculated as

P(X

For tuning of an engine, the rate is

\lambda=\frac{1}{40}

λ = 0.025

a. Probability of less than 30 minutes:

P(X

P(X

P (X < 30) = 0.5276

<u>Probability of tuning in 30 minutes or less is </u><u>52.76%</u><u>.</u>

<u />

b. Probability of between 30 and 35 can be described as

P(30

P(X

P(X

P (X < 35) = 0.5831

P (X < 30) = 0.5276

Then:

P(30

P (30 < X < 35) = 0.0555

<u>Probability of tuning an engine between 30 and 35 minutes is </u><u>5.55%.</u>

<u />

<u />

5 0
3 years ago
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