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Daniel [21]
3 years ago
7

-28=r/7-26 send help lauvs

Mathematics
1 answer:
lesantik [10]3 years ago
4 0

Answer:

r is equal to negative 14.

Step-by-step explanation:

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Please help<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B27x%5E2z%7D%7B-3x%5E2z%5E6%7D%20" id="TexFormula1" title=" \frac{2
tekilochka [14]
Answer:  - \frac{9}{z^5}

Explanation:

The simplification of that expression is done in this way:

1) The negative sign is placed in front of the whole fraction

2) 27 is divided by 3 resulting in 9: 27 / 3 = 9

3) x^2 on the numerator cancels out with x^2 of the denominator

4) z on the numerator is cancelled out with 1 z of the denominator and the result is z^5 in the denominatoir.

All that yields to :
    
      9
- --------
    z^5

Using the math editor it is:  - \frac{9}{z^5}


8 0
4 years ago
Plsss help with this question pls with whole procedure pls help ​
rjkz [21]

i hope this helps.......

7 0
3 years ago
Which of the following is a solution of 4x2 = − 9x − 4?
nignag [31]
Get all on one side
add 9x+4 both sides
4x^2+9x+4=0
use quadratic formula
in form
ax^2+bx+c=0
x=\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}

a=4
b=9
c=4

x=\frac{-9+/- \sqrt{9^{2}-4(4)(4)} }{2(4)}
x=\frac{-9+/- \sqrt{81-64} }{8}
x=\frac{-9+/- \sqrt{17} }{8}
x=\frac{-9+ \sqrt{17} }{8} or \frac{-9- \sqrt{17} }{8}

aprox
x=-1.64039 or -0.6096
8 0
4 years ago
Read 2 more answers
PLEASE URGENT HELP!!!
olchik [2.2K]

Answer:

The equation is;

y = 1/3x

Step-by-step explanation:

The equation of a linear model is given as;

y = mx + b

m is the slope while b is the y intercept

As we can see, the y intercept is the origin and that means b is zero

To get the value of m, the slope, we have to use the slope equation

We simply select any two points on the line

We have the points as (6,2) and (15,5)

The equation of the slope is:

m = (y2-y1)/(x2-x1)

(x1,y1) = (6,2)

(x2,y2) = (15,5)

m = (5-2)/(15-6) = 3/9 = 1/3

So the equation will be;

y = 1/3x

3 0
3 years ago
Which of the following lists of ordered pairs is a function?
Elza [17]

Answer:

D

Step-by-step explanation:

to be a function you cannot have different y values for the same x, in B for example when x = 3 you have two different values for y (3,7) and (3,8)

D is the only choice where each value of x only has one value for y

7 0
3 years ago
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