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3 years ago

Write an equation for a horizontal line that passes that (4, -2)

Mathematics

1 answer:

NeTakaya3 years ago

8 0

check the picture below.

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the distance in miles a family has traveled so far on their trip can be modeled by the equation y=0.6x - 75, where x is the numb

Andre45 [30]

Step-by-step explanation:

y = 0.6 x -75

201=0.6x-75

0.6x=276

x= 276/.6

=460

So, travelled for 460 minutes.

3 0

3 years ago

Please help!

Gemiola [76]

The derivative of $f(x) = 2\cdot x^{2}-9$ is $f'(x) = 4\cdot x$ .

In this exercise we must apply the definition of derivative, which is described below:

$f'(x) = \lim_{x \to 0} a_n \frac{f(x+h)-f(x)}{h}$ (1)

If we know that $f(x) = 2\cdot x^{2}-9$ , then the derivative of the expression is:

$f'(x) = \lim_{h \to 0} \frac{2\cdot (x+h)^{2}-9-2\cdot x^{2}+9}{h}$

$f'(x) = 2\cdot \lim_{h \to 0} \frac{x^{2}+2\cdot h\cdot x + h^{2}-2\cdot x^{2}}{h}$

$f'(x) = 2\cdot \lim_{h \to 0} 2\cdot x + h$

$f'(x) = 4\cdot x$

The derivative of $f(x) = 2\cdot x^{2}-9$ is $f'(x) = 4\cdot x$ .

We kindly invite to check this question on derivatives: brainly.com/question/23847661

4 0

3 years ago

the average salary for new college graduates with the job is $50,556. A particular University wants to claim his graduates earn

ValentinkaMS [17]

Answer:

Given:

Null hypothesis: the average salary for new college graduates with a job is $50,556.

Alternative hypothesis: the graduates from a university earn more than that average.

Using the z-test:

=> Calculate the value of test statistic:

t = (mean of sample - mean of null hypothesis)/(std/sqrt(number of sample)

= (53200 - 50556)/(10200/sqrt(100))

= 2.592 > 1.645

=> Reject the null hypothesis, their graduates earn more than average

Hope this helps!

3 0

4 years ago

The polynomial x^2-(k+1)x-3 has a factor (x-k+1). find k

astra-53 [7]

Answer:

Step-by-step explanation:

please help some one I also need help on this

6 0

3 years ago

Could someone please help me!??

scZoUnD [109]

Answer:

Step-by-step explanation:

i think its 1

8 0

3 years ago