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dem82 [27]
3 years ago
7

ormula1" title=" \frac{x}{5}+\frac{3x}{15}=\frac{2x}{3} } " alt=" \frac{x}{5}+\frac{3x}{15}=\frac{2x}{3} } " align="absmiddle" class="latex-formula">+2 Answer plz math help
Mathematics
1 answer:
Bezzdna [24]3 years ago
4 0
Multiply all terms by 15
3x+3x= 10x+30

Combine like terms
6x=10x+30

Subtract 10x from both sides
-4x=30

Divide both sides by -4
x= -7.5

Final answer: -7.5
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Find the sum of the infinite series 1/3+4/9+16/27+64/81+.... if it exists.
pshichka [43]
9/27, 12/27, 16/27

So this is a geometric sequence as each term is 4/3 the previous term.

Since the common ration is greater than one the sum of the series diverges, it does not exist.  (The sum just keeps getting larger and larger)

For a geometric series to have a sum r^2<1

So that the normal sum....

s(n)=a(1-r^n)/(1-r)   becomes if r^2<1

s=a/(1-r)
6 0
3 years ago
I need to know the answer ?
Bess [88]

It would be 2.31 i think.. If not i apologize.

8 0
2 years ago
Read 2 more answers
Point A (-7,-2) is rotated 270 counterclockwise and then shifted down 3 units. What are to coordinates of K’
AfilCa [17]

Answer:

K'= (-2, 4)

Step-by-step explanation:

First we are going to rotate our point 270° counterclockwise.

The rule for a 270° counterclockwise rotation is (x,y)-->(y,-x), which means that we just need to interchange the coordinates of the point and change the sign of the x-coordinate:

(x,y)-->(y,-x)

(-7,-2)-->(-2,-7)

(-7,-2)-->(-2,-(-7))

(-7,-2)-->(-2,7)

Now, to shift the point 3 units down, we just need to subtract 3 units from the new y-coordinate of our resulting point form the previous procedure:

(x,y)-->(x,y-3)

(-2,7)-->(-2,7-3)

(-2,7)-->(-2,4)

We can conclude that the coordinates of K' are (-2, 4)

6 0
3 years ago
Evaluate the equation when x = 2, y = -1, and z =3<br><br> y/z+3y
ZanzabumX [31]
-1/3+6
17/3

(Mark me the brainliest if this was helpful)
4 0
2 years ago
If a new jacket sells for $30, find the total cost if you were charged 5% sales tax. Round your answer to the nearest cent.
Nady [450]
We would multiply $30 by 5% to first find 5% 
5% = 0.05 
$30 x 0.05 = $1.50
Now we add that to 30 
$30 + $1.50 = $31.50 

Your answer is $31.50 
6 0
2 years ago
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