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Zinaida [17]
3 years ago
11

What is the solution to the system of equations below?

Mathematics
1 answer:
Nady [450]3 years ago
8 0
A))))))(9,3)
if u have any doubts ask me
please mark as brainliest
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3/4 of a class went to see a movie. If 1/2 of the class went to the afternoon session, what fraction of the class went to the ev
Paha777 [63]
1/4 went to the evening session
6 0
3 years ago
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Find the antiderivative for each function when C = 0. Check your answers by differentiation. ​
leonid [27]

Answer with Step-by-step explanation:

We are given that C=0

We have to find the anti-derivative of each function

a.h(x)=sec^2 x

We know that \int sec^2 xdx=tanx+C

Apply this formula then, we get

\int sec^2x dx=tanx +C

Substitute C=0

Then, we get \int h(x) dx=tan x

Verification :

Differentiate w.r.t x

Then, we get

h(x)=sec^2 x

\frac{d tanx}{dx}=sec^2 x

b.g(x)=\frac{8}{9} sec^2 \frac{x}{9}

\int g(x) dx=\frac{8}{9}\int sec^2\frac{x}{9} dx=\frac{8}{9}\times 9tan\frac{x}{9}+C

Substitute C=0

\int g(x) dx=8 tan\frac{x}{9}

Verification:

Differentiate w.r.t x

g(x)=8\times \frac{1}{9} sec^2\frac{x}{9}=\frac{8}{9} sec^2\frac{x}{9}

c.k(x)=sec^2\frac{9x}{8}

\int k(x) dx=\int \sec^28}{9}tan\frac{9x}{8}+C

Substitute C=0

\int k(x) dx=\frac{8}{9} tan\frac{9x}{8}

Verification: Differentiate w.r.t x

k(x)=\frac{8}{9}\times \frac{9}{8} sec^2\frac{9x}{8}=sec^2\frac{9x}{8}

4 0
3 years ago
Can someone please give me a pathway or roadmap in order to study statistics?​
Brums [2.3K]

Answer:

So to learn statistics, you need to know what is a statistic and how you should solve it

Statistic: (What to do)

1) Collection of data

2) Presentation of data

3) Analysis of data

4) Interpetation of data

The most common things in statistics are, Mean (average), Mode, (most frequent), Median, (The middle), range (the calculation of the greatest-the least to find data spread).

If you don’t have 1 step in the 4 steps listed, you would have a hard time figuring things out

So collection of data is basically gathering your information

Presentation is when you finished gathering and you have to present them, be sure to find median, mode and range. It has to be from greatest to least

The analysis Is if you got it correct, check your median or mean to see if its about the same thing, check range to see if the spread* is about even

The spread of the data can be found by solving the range, if you get a high number and its not even close to most of the numbers, then you know something is wrong or maybe there is an outlier

And finally the interpretation, you did everything, but can you read it, can you read the median or average and get a general idea? Can you read the graph?

the road map would be like

1) Introduction to mean median and mode

2) Introduction Pt2, range, outlier

3) Learnign to find the 5 common things fluently

4) Introduction to IQR (Inner quartile range)  (not used much but could be useful in special cases)

5) finding Q1 and Q3 and knowing how to plot a box and whiskers plot (basically pt 2 to IQR)

6) Leanring to plot fluently

7) Different graphs introduction (Histograms, line plot, number plot, a graph)

8) Learning to find spread (deeper range understanding)

9) All in all practice

(This is what I would think if I were to teach statistics)

6 0
3 years ago
Simplify the expression 5(-7+q)
Katen [24]
Simplifying the expression of 5(-7+q) is Q=7
7 0
3 years ago
Read 2 more answers
A killer whale has eaten 75 pounds of fish today. It needs to eat at least 140 pounds of fish each day.
Alenkasestr [34]

Answer:

a) x ≥ 4.33

b) The killer whale should eat four or five more buckets of fish because eating it will give the required amount of fishes the killer whale is required to eat per day.

Step-by-step explanation:

The killer whale has taken 75 pounds of fish.

It needs to eat at least 140 pounds of fish per day. This means that the whale has at least (140 – 65)= 65 pounds of fish to eat for that day.

a) you Let the count of bucket = x

Each bucket holds 15 pounds of fish

Quantity of 1 bucket * count of bucket = what is remaining for the fish to eat

15x = 65

x = 65/15

x= 4.33

x= 4.33 buckets

At least 4.33 buckets means greater than or equal to 4.33 buckets.

Therefore the count of the bucket is

x ≥ 4.33

b) The killer whale should eat four or five more buckets of fish because eating it will give the required amount of fishes the killer whale is required to eat per day.

4 0
4 years ago
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