3 years ago

HEy i need to know what 2x+5=10 solve for x

Mathematics

2 answers:

Mama L [17]3 years ago

8 0

X=2.5

subtract 5 from both sides and then divide 5 by 2.

konstantin123 [22]3 years ago

7 0

X=5/2 or 2.5 that is in decimal form

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How to do this?

Mandarinka [93]

This equation uses two properties of logarithms:

$\ln(g^x) = x \ln(g)$

$\ln(a) + \ln(b) = \ln(ab)$

So you could take the ln from left and right hand side in the equation, and get:

(2-x)ln 3 = x ln 5

then

2 ln 3 - x ln 3 - x ln 5 = 0 =>

x(ln 3 + ln 5) = 2 ln 3

so x = 2 ln 3 / (ln3 + ln5)

Now using the 1st property you can say 2 ln 3 is ln 3² = ln9
and using the 2nd property you can say ln3 + ln5 = ln15

so x= ln9 / ln15

7 0

3 years ago

A set of 3 consecutive integers has a sum of 27. which integers are they

Scilla [17]

They are 8, 9 and 10.

5 0

3 years ago

Plzzzzz help I don’t understand and this question is worth 23 points that’s how much I need to know how to do this and I need to

butalik [34]

You need PEMDAS
do 3·6 and then 12/6
when you subtract the product and quoetient you get 16 for the answer

6 0

3 years ago