Answer:
(-7, -12)
Step-by-step explanation:
4x-3y=8
5x-2y=-11
Is there any of the like terms can be added and the result will be 0? No, so we have to multiple one OR both of the equations to make that one number do that.
(I will try to remove the y like terms so i will multiple both of them by the opposite so both of the ys will be 6)
2(4x-3y=8)
-3(5x-2y=-11)
8x-6y=16
-15x+6y=33
(now the easy part… cancel the 6s and add the equations)
8x+(-15x)=-7x
16+33=49
-7x=49
(divide 49 by -7)
x=-7
Replace x in any of the equations and you’ll get the y value.
4x-3y=8
4(-7)-3y=8
-28-3y=8
-3y=36
y=12
Threfore, there is one solution which is….. (-7,-12)
Answer:
Step-by-step explanation:
Given
Let the number be x.
So, we have:
----- 4 times a number
--- 12 less than its square
The equation becomes
Equate to o
Split
Factorize
Factor out x - 6
Split
Solve for x
<em>The positive value is 6</em>
The first error made by Cai in his proof was: the use of an invalid reason to <em>justify </em>the congruence of a pair of sides or angles. (<em>Option A</em>)
<em><u>Recall:</u></em>
- If two triangles have two pairs of congruent sides and a pair of included side that are congruent, both triangles are considered congruent by the Side-Angle-Side Congruence Theorem (SAS).
<em>△FGH and △HIJ are shown in the diagram attached below. Also, the diagram shows the </em><em>proof </em><em>of Cai.</em>
<em />
The first error that can be noted is that Cai the reason given for stating that is false and invalid.
<HFG and <JHI are corresponding angles which makes them congruent. They are not alternate interior angles.
- Therefore, the first error made by Cai in his proof was: the use of an invalid reason to <em>justify </em>the congruence of a pair of sides or angles. (<em>Option A</em>)
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brainly.com/question/13408604
Answer:
7x^2+2x-4
Step-by-step explanation:
a standard form is ax+by=c
5x^2 add 2x^2=7x^2 then -2x but when you have a -10 +6 you get -4 giving you the answer of 7x^2 +2x -4
0 0 3 7
4 2 1 5 7 8
− 0
1 5
− 0
1 5 7
− 1 2 6
3 1 8
− 2 9 4
2 4