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3 years ago

I am stuck on this question. Could someone please help?

Mathematics

1 answer:

kkurt [141]3 years ago

8 0

Step-by-step explanation:

-inf<= x <= inf

-inf<= y <= 4

It is a function

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a farmer plant white rice and brown rice on 10 acres and he has 18 liter of pesticide to use. white rice requires 2 liters of pe

exis [7]

Answer:

Step-by-step explanation:

sticide per acre and brown rice requires 1 liter of pesticide per acre. if he can earn $5000 for each acre of white rice ans $3000 for each acre of brown rice, how many acre of each should by plan to maximize his earnings? what are his maximum earning?

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3 years ago

What is the value of the expression when a = 5 and b = 2? 2a+b−3 A.6 B.9 C.11 D.24

Studentka2010 [4]

2a + b - 3

2(5) + 2 - 3

10 + 2 - 3

12 - 3 = 9

Answer - 9

Hope this Helps!!

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3 years ago

Read 2 more answers

True or False: A race car driver tested his car for time from 0 to 60 mph, and for 20 tests obtained a mean of 4.85 seconds with

sattari [20]

Answer:

The given statement is false.

Step-by-step explanation:

We are given the following in the question:

95% confidence interval: (4.53,5.18)

Sample mean, $\bar{x}$ = 4.85 seconds

Sample size, n = 20

Alpha, α = 0.05

Sample standard deviation, σ = 1.47 seconds

Degree of freedom = n - 1 = 19

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 4 and}~\alpha_{0.01} = \pm 2.09$

$4.85 \pm 2.09(\dfrac{ 1.47}{\sqrt{20}} )\\\\ = 4.85 \pm 0.69 \\\\= (4.16 ,5.54)$

Thus, the calculated confidence interval is different from the given confidence interval.

Hence, the given statement is false.

6 0

4 years ago

To draw a line segment perpendicular to XY passing through point x

Andrew [12]

What does perpendicular mean? Well, in elementary geometry it mean 2 lines that intersect at a right angle. (90°).

So for Part one. all you need to do is draw a straight line down from the point X. Name the end point of that line M.

Now you will connect the line M and Z.

Thats it! I hope this helped!! :)

3 0

3 years ago

Read 2 more answers

What is the rang y=-x2 - 2x + 3?

Damm [24]

This is a downward facing parabola, so its range comes in the form

$(-\infty, m)$ where m is the y coordinate of the vertex of the parabola.