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svlad2 [7]
3 years ago
10

HELP PLEASE FAST!! ILL GIVE 5 STARS :))))

Mathematics
2 answers:
skad [1K]3 years ago
6 0
Hi there!

Generally, any form is fine, since you always get the same solutions (if you're doing it correctly), but usually, if you encounter something like y = 3x + 2 when the value of y is already given to you, you can just plug the value of y into the other equation and use substitution, but other than that, if the question allows, you should use elimination.

Hope this helps!
VMariaS [17]3 years ago
4 0
Use substitution when either and x or y is given, for instance: x = 2y + 3 or y = 8x - 9.

Use elimination when a number from both equations can cancel each other out, for example:
2x + 3y = 19
-2x + 7y = 12

Hope this helps!
You might be interested in
I'd be happy if you could help!​
ss7ja [257]

Step-by-step explanation:

Circumference=22π

2πr=22π

r=11 in.

Area=121π in.²

Hope it helps you

8 0
2 years ago
Please some help me or I’ll fail I need help ASAP
Ronch [10]

Answer:

1cm

Step-by-step explanation:

from the scale we know that

1cm on the map is equal to 300cms on the ground

Below I have made a table and used the unitary method.

Distance on Map Distance on ground

1cm 300cm

let width be = x width = 3m = 300cm

hence

width = ( 1 ×300)/ 300 = 1cm

Hope this helps

4 0
2 years ago
If xy=0, what must be true about either x or y
evablogger [386]

Answer:

either x or y must equal 0​

Step-by-step explanation:

ts given that xy = 0

Remember that product of two numbers can be zero only if:

Both of them are zero or Either of them is zero as zero multiplied to any non-zero number will always be equal to zero. This is known as Zero Product Property.

So, if the product of x and y is equal to 0 there are two possibilities:

Both x and y are equal to 0

Either x or y must be equal to 0

Note that the condition both x and y are equal to zero is not a must condition, because even if one of them is equal to zero, the entire expression will be equal to zero.

Hence, the condition which has to be true in all cases for xy = 0 is:

either x or y must equal 0​

4 0
3 years ago
Read 2 more answers
How to solve for 3x - 24 = 81
VladimirAG [237]

Answer:

35

Step-by-step explanation:

3x=81+24

3x=105

x=35

6 0
3 years ago
Read 2 more answers
On March 1 kenny and Lenny had jars containing the same amount of pennies. One month later Kenny has two more than three times K
fgiga [73]

Answer:

idk tbh  i think is might be 3

Step-by-step explanation:

3 0
3 years ago
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