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NeX [460]
3 years ago
8

If x=15, y=3 & z=-2 what is the value of x-y _____+x ? yz

Mathematics
1 answer:
Elodia [21]3 years ago
4 0

Answer:

12

Step-by-step explanation:

From the question, the values of x, y and z are as follows.

x=15, y=3 and z= -2

Now, we are to find the value of the expression

\frac{x - y}{yz} + x

we substitute the values of x, y and z into the expression and simplify

\frac{15 - 3}{3( - 2)} + 15

=  \frac{12}{ - 6} + 15

=  - 2+ 15

= 13

Therefore, value of

\frac{x - y}{yz} + x =12

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John's age is 4 more than 3 time Mike's age. If their sum is 20, how old are Mike and John?
natima [27]
Let me help you with this :)

John = x 
Mike = y

x = 4 + 3y (4 more than 3 times)

x + y = 20 (we put the x above into this equation)

4 + 3y + y = 20 
4y = 16 (we transfers the 4 on the left side to the right side and subtract it from the 20)
y = 4 (the answer is 4)

we use this for the equation:

x = 4 +3*4
x = 16

John is 16 years old and Mike is 4 years old :)

6 0
2 years ago
Is square root of 12 over 4 is irrational or rational and why
Oliga [24]
Rational because the answer was simplified already as 12÷4=3
8 0
3 years ago
Read 2 more answers
Please help ASAP!!!!
Inga [223]
A negative times a negative is a positive, and a negative times a positive is equal to a negative. I’ve never used that program so if that what u need help with sorryyy
5 0
3 years ago
rectangle will have length 3n+ 6 and height 2n−1 inches, while the square will have side length n+ 2inches. Find the perimeter a
kifflom [539]

Answer:

Perimeter: 2(3x+6)+ 2(2x-4)

X=9

Step-by-step explanation:

In order to create the expression you just have to remember that the perimeter of a rectangle equals 2 bases plus 2 sides, so the expression would be:

Perimeter: 2(heights)+ 2(bases)

Perimeter: 2(3x+6)+ 2(2x-4)

IN order to solve for X we just have to insert the value of perimeter, which is 94:

Perimeter: 2(3x+6)+ 2(2x-4)

94=2(3x+6)+ 2(2x-4)

94= 6x+12+4x-8

94=10x+4

94-4=10x

x=90/10

x=9

So the value of x would be 9.

6 0
2 years ago
Find the 9th term of the geometric sequence 5, -25, 125, ...
arlik [135]

Answer:

Step-by-step explanation:

a = 5

r = -5

n = 9

t_9 = a r^(n - 1)

t_9 = (-1)^n*5 (-5) ^ 8

t_9 = (-1)^9 *  5 *  (-5) ^8

t_9 = -1 ( 1953125)

t_9 = - 1953125

6 0
3 years ago
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