What is the derivative of Sec^2(3x)

To solve the inequality -1/4x>-2, Chrissy thinks she should add 1/4 to both sides. What is wrong with her first step?

Darina [25.2K]

Answer D because you want to get the x by itself and in order to do this she needs to multiply by -4 so that one side only has x.

5 0

3 years ago

YALL HELP I HAVE A EXAM

vekshin1

Answer:

haha lo we arent helping you cheat

Step-by-step explanation:

8 0

3 years ago

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A conditional statement is logically equivalent to a biconditional statement. True False pls help i have a test and i was absent

andreyandreev [35.5K]

Answer:

false.

Step-by-step explanation:

A conditional statement is something like:

If P, then Q.

This means that if a given proposition P is true, then another proposition Q is also true.

An example of this is:

P = its raining

Q = there are clouds in the sky.

So the conditional statement is

If its raining, then there are clouds in the sky.

A biconditional statement is:

P if and only if Q.

This means that P is only true if Q is true, and Q is only true if P is true.

So, using the previous propositions we get:

Its raining if and only if there are clouds in the sky.

This statement is false, because is possible to have clouds in the sky and not rain.

(this statement implies that if there are clouds in the sky, there should be rain)

Then we could see that for the same propositions, the conditional statement is true and the biconditional statement is false.

Then these statements are not logically equivalent.

The statement is false.

3 0

3 years ago

Can anyone help me with science and math 23 assignments that I have missing including English also it’s in Jupiter grades

Alex_Xolod [135]

Answer:

I guess! I will try my best! I may not know all the answers, but I can help you with most I hope!

I hope that works?

Step-by-step explanation:

3 0

3 years ago

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Please answerrrrr Thank you!!!!!!!!!!!!

dlinn [17]

The correct answers are:

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" (x − 13) ° = 53 ° " ;

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" x = 66 " ;

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" m∠2 = 55° " ;

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" m∠1 = 55° " .

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Step-by-step explanation:

Note: The following "given values/answers" within the attached image:

Specifically:

(x − 13)° = 72° ; and;

x = 85° ;

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are: "incorrect"—and are "arbitrarily assigned values"

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The values and expressions given in the attached image, however, are correct/do make sense; and we can use such data to solve the problem.

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Let's start by finding the measure of ∠2 ; that is: " m∠2 " :

To find m∠2:

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Note that: both: "∠2 " ; and the angle that measures "175" with the attached image:

→ both form a straight line—that is;

→ they are "supplementary angles" ;

→ which means they add up to "180° " ;

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So: To solve for: "m∠2" :

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→ m∠2 = 180 − (125) = 55° ,

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Now; to solve for: " m∠1 " :

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Note that ∠1 and ∠2 are vertical angles: which means that they have equal measurements;

{since: vertical angles are congruent; which means that vertical angles are equal.} ;

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→ As such, m∠1 = m∠2 = 55 °.

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Now, take either ∠1 or ∠2 ; (each has the same "measurement"—"55° " ;

And combine with angle with the given measurement of 72° ;

And combine with the angle with the "given measurement of [the expression: ["x − 13"]° ;

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All three of these angles form a straight line—that is;

→ they are "supplementary angles" ;

→ which means they add up to "180° " ;

So, 55° + 72° + (x − 13)° = 180° ;

Let us solve for "x" ; and for "(x − 13)" ;

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55 + 72 = 127 ;

→ 127 + (x − 13) = 180 ;

Now, subtract "127" from each side of the equation:

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→ 127 + (x − 13) − 127 = 180 − 127 ;

to get:

" (x − 13) = 53 " ; → which is one of our answers;

Now, to solve for "x" ; we add "13" to Each Side of the equation;

to isolate "x" on one side of the equation; & to solve for "x" :

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x − 13 + 13 = 53 + 13 ;

to get:

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x = 66 ;

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So: The correct answers are:

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" (x − 13) ° = 53 ° " ;

→ Double check by substituting our value of "66" for "x" :

" (66 − 13) =? 53 ? Yes! ;

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" x = 66 " ;

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" m∠2 = 55° " ;

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" m∠1 = 55° " .

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Hope these answers—and explanations—are helpful!

Best wishes!

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3 0

2 years ago