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4 years ago

8≤r-14z+4≥2zhelp me plz

Mathematics

1 answer:

Nikitich [7]4 years ago

6 0

The answer for the first one is
$22 \leqslant r$
You have to add both sides by 14 and you will get my answer.

I'm sorry I don't know the answer for the second one.

Hope this helps though!

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∫ ex (sec x + tan²x) dx = ? a) eˣsec²x b) eˣsecx c) eˣtan²x d) eˣtanx

marysya [2.9K]

None of these options seem to be correct. You can check each result by differentiation:

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$(e^x\sec x)'=e^x(\sec x+\sec x\tan x)=e^x\sec x(1+\tan x)$

$(e^x\tan^2x)'=e^x(\tan^2x+2\tan x\sec^2x)=e^x\tan x(\tan x+2\sec^2x)$

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3 years ago

Trigonometry problems, help

VLD [36.1K]

Answer:

Step-by-step explanation:

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4 0

3 years ago

7. Estimote the following percentages of 60.<br> 10% =<br> 25% =<br> 50% =<br> 20% =

Orlov [11]

Answer:

10% of 60 = 6

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Step-by-step explanation:

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3 years ago

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If measure FG = 120° and measure EH = 94, what is measure angle EPH?

tankabanditka [31]

Answer:

∠EPH = 107°

Step-by-step explanation:

∠EPH is an angle formed by two intersecting chords.

arc FG and arc EH are the arcs ∠EPH intercepts.

The relationship between an angle formed by intersecting chords and their intercepted arcs is that the angle is equal to half the sum of its intercepted arcs.

Which means that ∠EPH = 1/2 ( arc FG + arc EH )

If arc FG = 120° and arc EH = 94°

Then ∠EPH = 1/2 ( 120 + 94 )

120 + 94 = 214

214 / 2 = 107

Hence, ∠EPH = 107°

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3 years ago

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AysviL [449]

Answer:

F(-3)=12

F(2)=7

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Step-by-step explanation:

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4 years ago