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AlekseyPX
3 years ago
8

Solve the system of equations using the substitution method. check the solution.

Mathematics
1 answer:
elixir [45]3 years ago
4 0
(-1,2) 


hope this helps buddy
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The sum of four<br>consecutive odd number is 8o. Find the number​
yarga [219]

Answer:

<em>The sum of 4 consecutive odd number is 80</em>

<em>Let X be the first of these numbers</em>

<em>Then the next odd number is X+2</em>

<em>The third is X+4The fourth is X+6</em>

<em>All of these add up to 80</em>

<em>(X) + (X+2) + (X+4) + (X+6) = 80</em>

<em>Using the commutative and associative laws, let's transform this equation into</em>

<em>(X + X + X + X) + (2 + 4 + 6) = 804X + 12 = 80</em>

<em>Subtract 12 from both sides of the equation gives4X = 68</em>

<em>Divide both sides by 4 gives</em>

<em>X = 17</em>

<em>Going back to the original question:What are the 4 consecutive odd numbers: 17, 19, 21, 23Checking our answer:17 + 19 + 21 + 23 = 80 Correct!</em>

5 0
2 years ago
What additional information is needed to prove the triangles are congruent by SAS ?
DENIUS [597]

Answer:

Answer choice B was correct

Step-by-step explanation:

Line segment EB is congruent to line segment CB. I took the test.

4 0
3 years ago
What is the answer plz help
ss7ja [257]

Answer:

x=82

Step-by-step explanation:

8 0
3 years ago
SOMEONE PLEASE HELP I will mark you BRAINLIST
bazaltina [42]

Answer:

20 degrees

Step-by-step explanation:

both triangles are co friend and 90+70=160 180+160=20

5 0
3 years ago
Read 2 more answers
Is this right?<br> Any links get reported!
e-lub [12.9K]

Answer:

yes

Step-by-step explanation:

12/99=121212, so yes

12/100= 0.12, nope

12/90=0.13131, nope

4/33=0.121212, so yes

3/25=0.12, nope

4/30=0.131313, so nope

in conclusion, you are correct

8 0
3 years ago
Read 2 more answers
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