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lisov135 [29]
3 years ago
13

PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (80pts)

Mathematics
2 answers:
wariber [46]3 years ago
6 0

Answer:

PQ = 20

QR = 15

Step-by-step explanation:

PQ^2 = 16^2 + 12^2

PQ^2 = 400

PQ = √400 = 20

QR^2 = 12^2+9^2

QR^2 = 225

QR = √225 = 15

Firlakuza [10]3 years ago
6 0

HeY TheRe!

PQ = 20 cm

QR = 15 cm

\\

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Solve: e^2x + 5 = 4<br> help pls
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Answer:

The solution of the equation is x=\frac{(ln4)-5}{2} ⇒ 3rd answer

Step-by-step explanation:

* Lets explain how to solve this problem

- The function f(x) = e^x is called the (natural) exponential function

- The natural logarithm (㏑), or logarithm to base e, is the inverse

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∵ e^{2x+5}=4 is an exponential function

∴ We can solve it by using the inverse of e (㏑)

- Remember:

# ln(e)=1

# ln(e^{m})=m(ln(e))=m

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∵ ln(e^{2x+5})=(2x+5)ln(e)=2x+5

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4 years ago
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snow_lady [41]
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Answer:

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