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ddd [48]
3 years ago
7

Write a general formula to describe the variation: x varies jointly with the inverse of the sum of y and z.

Mathematics
1 answer:
natali 33 [55]3 years ago
3 0
X=k/(x+y)...............
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What is the midpoint between (-1, 1) and (5, -5)
e-lub [12.9K]

Answer:

(2,-2) is your answer

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
6=−w8 how can i solve this
Vaselesa [24]
Divide 6 by -8 to get the variable alone!
6/-8 < division< equation
4 0
3 years ago
| x - 1 | = 5x + 10<br> Check for extraneous solutions.
Ronch [10]
[x-1]=5x+10

We have two equations:
1) x-1=5x+10

x-1=5x+10
x-5x=10+1
-4x=11
x=-11/4

2) x-1=-(5x+10)

x-1=-(5x+10)
x-1=-5x-10
x+5x=-10+1
6x=-9
x=-9/6=-3/2

we have two  possible solutions:
solution₁;       x=-11/4
solution₂:       x=-3/2

we check it out:
1) x=-11/4
[x-1]=5x+10
[-11/4  - 1]=5(-11/4)+10
[(-11-4)/4]=-55/4  + 10
[-15/4]=(-55+40) /4
15/4≠-15/4   This solution don´t work.

2) x=-3/2
[x-1]=5x+10
[-3/2  - 1]=5(-3/2)+10
[(-3-2)/2]=-15/2  + 10
[-5/2]=(-15+20)/2
5/2=5/2; this solution works.

Therefore:

Answer: x=-3/2.
8 0
3 years ago
Read 2 more answers
When asked about favorite Thanksgiving leftovers, 5% of the people said turkey and 7/100 said mashed potatoes. Which food was mo
Serjik [45]

Answer: Mash Potatoes

Step-by-step explanation: 7/100 written as a percentages is 7%

5 0
2 years ago
Read 2 more answers
Multiply (2x+3) (-x -2)
Marysya12 [62]

Answer:

-2x^{2} -7x-6

Step-by-step explanation:

(2x + 3) (-x - 2)

distribute first term, to the second term:

2x(-x) + 2x(-2) + 3(-x) + 3(-2)

multiply:

(-2x^{2}) + (-4x) + (-3x) + (-6)

-2x^{2} -4x-3x-6

combine the like terms:

-2x^{2} - 4x - 3x - 6

             -7x

-2x^{2} - 7x - 6

final answer :

-2x^{2} - 7x - 6

hope this helped !!

mark me brainliest :D

6 0
3 years ago
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