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luda_lava [24]
3 years ago
6

Can you please answer 1,3,5 and 7.

Mathematics
1 answer:
Galina-37 [17]3 years ago
5 0
Probably 150 which isn't bad
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Solve the following systems algebraically<br> a. x+2y=17 <br> x-y=2
motikmotik
There are 3 methods to solve this. elimination substitution and graphing but i am going to use the elimination method.
  x+2y=17
 <u> x-y   =2
</u> 0+3y  =15   ( subtracted down to eliminate the x)( x-x=0, 2y-(-y)=3y, and 17-2=15)
     3y=15    (divide both sides by 3 to solve for y)
      y=5
<u>substitute the y=5 in any of the above equations and solve for x
ie... ( </u>meaning where you find y in the equation, u replace it with a 5)

it will be easier to solve for x in (x-y=2) so i will use that one.
x-(5)=2  ( add 5 on both sides to solve for x)
x=7
5 0
3 years ago
How do you do 51 and 54?
NemiM [27]
51. I checked the comments but I still didn't understand it, sorry :/

54.

(43+45+47+49)=184

They are all odd and they are in consecutive order (one after another)
5 0
3 years ago
If (x)= 2x square minus 1,then f(-3)
viva [34]

Answer:

17.

Step-by-step explanation:

f(x) = 2x^2 - 1

f(-3) = 2(-3)^2 - 1

= 2 * 9 - 1

= 18 - 1

= 17

Hope this helps!

4 0
2 years ago
Read 2 more answers
2. Yahir was going up the stairs when he noticed that the first step was taller, so he measured
goblinko [34]

Answer:

6.5

Step-by-step explanation:

This answer makes sense because i subtracted the 8 inches from the total 60 then i used the number i got in the result (52)then i divided 52 by 8 wich are the rest of the steps. getting 6.5

3 0
3 years ago
What issue results from the combination of limited resources and unlimited wants?
melomori [17]
<span>The issue that results from the combination of limited resources and unlimited wants? is: Scarcity   </span>
5 0
3 years ago
Read 2 more answers
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