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nordsb [41]
3 years ago
11

The sum of two numbers is 50. One number is 10 less than three times the other number. What are the two numbers? A. 25 and 25 B.

45 and 5 C. 15 and 35 D. 40 and 10 E. 20 and 30
Mathematics
2 answers:
Alex Ar [27]3 years ago
8 0
Let x = other number
Let 3x-10 = One number
x%2B3x-10=50
CLT
4x-10=50
Add 10


4x=60
Divide both sides by 4
x=15
3x-10
45-10
35
The numbers are 15 and 35.
Alecsey [184]3 years ago
6 0

I think the correct answer is 15 and 35.

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4 0
2 years ago
What’s the answer?and how do you get it
Kay [80]

the solid is made up of 2 regular octagons, 8 sides, joined up by 8 rectangles, one on each side towards the other octagonal face.

from the figure, we can see that the apothem is 5 for the octagons, and since each side is 3 cm long, the perimeter of one octagon is 3*8 = 24.

the standing up sides are simply rectangles of 8x3.

if we can just get the area of all those ten figures, and sum them up, that'd be the area of the solid.

\bf \textit{area of a regular polygon}\\\\ A=\cfrac{1}{2}ap~~ \begin{cases} a=apothem\\ p=perimeter\\[-0.5em] \hrulefill\\ a=5\\ p=24 \end{cases}\implies A=\cfrac{1}{2}(5)(24)\implies \stackrel{\textit{just for one octagon}}{A=60} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \stackrel{\textit{two octagon's area}}{2(60)}~~+~~\stackrel{\textit{eight rectangle's area}}{8(3\cdot 8)}\implies 120+192\implies 312

7 0
3 years ago
Which of the following is the inverse of f(x)=3-x/5?​
pshichka [43]

Answer:

-5x+3 OR 5x-3

Step-by-step explanation:

You find the inverse by replacing the x with the y, and solving for y. Doing this actually gives you -5x+3 but in this case,  the closest answer would be 5x-3.

UPDATE: -5x + 3 can be written as 3 - 5x lol

5 0
2 years ago
Read 2 more answers
Can someone please explain how to do number 23 I have no idea how to do it.
taurus [48]
Ok so first equate all the three equations whether by substituting or by eliminating then choose the one das not the answer
3 0
2 years ago
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