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1 year ago

Can someone help me with these questions, don’t mind the answers written already

Mathematics

1 answer:

Rina8888 [55]1 year ago

8 0

Answer:

a) x value is -2, min is -3(if thats y)

b) x value is 3, max is 21(if thats y)

Step-by-step explanation:

yes you do quadratic formula and such :)

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juin [17]

Answer:

108 %

Step-by-step explanation:

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2 years ago

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Show tan (x) + cot (x) • sec(x)

topjm [15]

$\tan x+\cot x=\csc x.\sec x$

Let us change tan x and cot x to sin x and cos x

$\begin{gathered} \because\tan x=\frac{\sin x}{\cos x} \\ \because\cot x=\frac{\cos x}{\sin x} \end{gathered}$

Substitute them on the left side

$LHS=\frac{\sin x}{\cos x}+\frac{\cos x}{\sin x}=\frac{\sin^2x+cox^2x}{\cos x\sin x}$

I multiplied the denominators and multiply each numerator by the opposite denominator

$\because\sin ^2x+cox^2x=1$ $\therefore L.H.S=\frac{1}{\sin x\cos x}$

Now we will work on the right hand side

$\begin{gathered} \because\csc x=\frac{1}{\sin x} \\ \because\sec x=\frac{1}{\cos x} \end{gathered}$

Substitute them on the right side

$\because R.H.S=\frac{1}{\sin x}\times\frac{1}{\cos x}=\frac{1}{\sin x\cos x}$

The L.H.S = R.H.S = 1/(sin x cos x)

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1 year ago

WILL GIVE BRAINLIEST IF ANSWERED CORRECTLY!!!!!!

Ivahew [28]

Answer:

Step-by-step explanation:

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2 years ago

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I found the expected value for the number of boys for a family with five children to be 2.5. I must have made an error because a

ICE Princess25 [194]

Answer:

We are meant to round down fractions of persons to the nearest whole number possible

Step-by-step explanation:

Here we have the question with regards the result of a fraction of a person to a solution of a statistic question.

Where the result is a fraction, the format is, since most solutions to questions in statistics with regards to people pertain to the maximum amount of persons that fit a class, and since it is not technically feasible to account for the next half of the person after getting your result, we have to put down only the number of whole people possible which means as a rule we always round down the decimal or fractions to the nearest whole number of person

Therefore, you are correct, only that we can put 2 instead of 2.5 as your answer.

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2 years ago

The table represents a function.

Karolina [17]

Answer: A) Greater than

The equation y = 2x+5 has a greater rate of change compared to the table.

=========================================

Pick any two points from the table. I'm going to pick the first two rows so I picked (-1,0) and (2,3) as the two points. From here, the idea is to use the slope formula

m = (y2 - y1)/(x2 - x1)

m = (3-0)/(2 - (-1))

m = (3 - 0)/(2 + 1)

m = 3/3

m = 1

The slope of the line going through all of the points shown in the table is m = 1. So the rate of change for the table is also 1.

-------------

The slope of y = 2x+5 is m = 2. The equation y = 2x+5 is in the form y = mx+b. So the rate of change for y = 2x+5 is 2.

Comparing the table's rate of change to the equation's rate of change, we see that the equation's rate of change is larger.

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3 years ago

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