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NikAS [45]
4 years ago
11

Which ordered pair (x, y) satisfies the system of equations shown below?

Mathematics
2 answers:
SashulF [63]4 years ago
8 0
These answers are not right it should be (3,1)
Kipish [7]4 years ago
4 0
It would be C

2(2) - -2 = 6
4 - -2 = 6
4 + 2 = 6

2 + 2(-2) = -2
2 + -4 = -2
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When should you use multiplication to solve a system of linear<br> equations by elimination
stich3 [128]
To use the elimination method you need the same variable in each equation to have the same coefficient. If neither variable has the same coefficient in each equation, you need to multiply one or both of the equations by a constant to get the same coefficient.
4 0
4 years ago
Find the sum: 2 + 9 + 16 + ... + 37
iris [78.8K]

Step-by-step explanation:

Sum of arithmetic terms = n/2 × [2a + (n - 1)×d], where 'a' is the first term, 'd' is the common difference between two numbers, and 'n' is the number of terms.

this is the same as n/2 × (a1 + an), because

an = a1 + (n-1)×d

so, for the series above :

a or a1 = 2

d = 7, as every new term is the previous term plus 7.

for n

37 = a1 + (n-1)×d = 2 + (n-1)×7

and now solve for n

35 = 7n - 7

42 = 7n

n = 6

so, the sum of all terms is

6/2 × (2+37) = 3×39 = 117

7 0
3 years ago
How do i mutiple 6 1/4 times 7 4/6
alukav5142 [94]
Break it down 61×4=244
74×6=444
8 0
3 years ago
Read 2 more answers
I don't understand 13 can someone help
Debora [2.8K]
Basically, you know a parallelogram has 4 angles which all add up to 360 degrees. (3x+5)+(x+3y)+2x+70=360 degrees. Just solve for x and y
5 0
4 years ago
Read 2 more answers
Just the 3rd and 4th plz help me
svlad2 [7]

Answer:


Step-by-step explanation:

Now the key here is manipulating the scale:

For 3 every 2cm = 15mi

Divide by 2 so every 1cm = 7.5mi

So if we had 16.27cm then that would equal 16.27 x 7.5 = 122.025mi on the actual scale

Same for 4: if 1/2cm = 20mi

Then multiply times 2 and every 1cm = 40mi

So 11.73cm x 40 = 469.2mi on the actual scale

Hopefully this is right and it helps!

8 0
4 years ago
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