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dedylja [7]
3 years ago
7

Evaluate the following expression using the given values: find x-3y if x=3 and y= -2. A.-9, B.-3, C.3, D.9

Mathematics
2 answers:
steposvetlana [31]3 years ago
6 0
X-3y
3-(-2)(3)= ?
3-(-6)=?
=9
Masja [62]3 years ago
4 0
X - 3y
x=3, y=-2
3 - 3(-2) = 3 - - 6
= 3 + 6
= 9
Answer: D

Hope it helped!
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Steps:
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ln3x^2 = 14 : Use the log property of addition which is to multiply same log                           together so you multiply x and 3x because they have log in                                common

  (ln3x^2) =  (14)  : take base of e on both sides to get rid of the log
e                e

3x^2 = e^14  : e cancels out log on the left side and the right side is e^14 

x^2 = e^14 / 3 : divide both sides by 3

√x^2 = <span>√(e^14 / 3) : take square root on both sides to get rid of the square 2                                  on x
</span>
x = √(e^14) / <span>√3 : square root cancels out square 2 leaving x by itself

x = e^7 / </span>√3 : simplify the √(e^14) so 14 (e^14) divide by 2 (square root) = 7<span>

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3 years ago
Parallel lines in space are coplanar.
kakasveta [241]
Coplanar lines are line witch lie on the same lie on the same plane. two parallel lines or two intersecting lines always lie in a plane. Thus, two line are coplanar, if and only if they are either parallel or intersecting. lines in three dimensional space are coplanar, only if they are not skewed lines.
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tensa zangetsu [6.8K]
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3 years ago
Please Help ASAP!!!!
KIM [24]

Answer:

m\angle M = 98\degree

Step-by-step explanation:

As we know that:

Sum of the measure of all interior angles of a triangle is always 180°.

\therefore (3x-16)\degree+(x+6)\degree+ x\degree = 180\degree\\\therefore (5x-10)\degree = 180\degree\\5x-10 = 180\\5x = 180 + 10\\5x = 190\\x= \frac{190}{5}\\x= 38\\\because m\angle M = (3x-16)\degree\\\therefore m\angle M = (3\times 38 -16)\degree\\\therefore m\angle M = (3\times 38 -16)\degree\\\therefore m\angle M = (114 -16)\degree\\\therefore m\angle M = 98\degree

3 0
3 years ago
rosa sells pens. she pays $0.75 for each pen and sells them for $1.25 each. she uses the expression 1.25p-0.75p, where p is the
Mila [183]

Answer:

The profit is $24

Step-by-step explanation:

Step one:

given the expression for the profit made as

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we are told that p is the number of pens, hence for p= 48 by substituting into the expression we can find the profit as

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6 0
3 years ago
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