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Leya [2.2K]
3 years ago
10

-6x+3y=-39 -6x-3y=-21 solve the system of equations

Mathematics
2 answers:
zimovet [89]3 years ago
5 0
The answer is the one on top
solmaris [256]3 years ago
4 0

Answer:

x=5,y=-3

Step-by-step explanation:

\left \{ {{-6x+3y=-39} \atop {-6x-3y=-21}} \right. \\-12x=-60\\12x=60\\x=\frac{60}{12} \\x=5

-6(5)+3y=-39\\-30+3y=-39\\3y=-39+30\\3y=-9\\y=-\frac{9}{3} \\y=-3

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The figure below shows rectangle ABCD with diagonals segment AC and segment DB:
djverab [1.8K]

Answer:

segment BC ≅ segment BC (reflexive property of congruence)  

Step-by-step explanation:

Reflexive property of congruence states that an angle, line segment, or shape is always congruent to itself.

Before statement 6, you need to prove that side BC is the same for both triangles

4 0
3 years ago
Read 2 more answers
If bob makes 40 mintues of long distance call for the month, which plan cost more
lora16 [44]

First, look at the x axis (this is the one labeled Minutes Used per month)

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To find the difference, subtract 4 from 8.

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If you have any further questions feel free to ask.

Hope this helps.

4 0
3 years ago
Sarah is multiplying two factors one with one decimal place and one with two decimal she says the product could have two decimal
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3 years ago
If the number of people is greater than the number of segments each person will get less than one segment
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3 years ago
Without using a calculator determine the number of real zeros of the function f(x) = x^3 + 4x^2 + x -6
hodyreva [135]
Try this:
x³+4x²+x-6=0
1) To re-write the equation into form:
1*x³+4*x²+1*x-6=0, the note 1+4+1=6, it means x=1
2) to re-write the equation into form:
(x-1)(x²+5x+6)=0
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3)
\left[\begin{array}{ccc}x-1=0\\x+2=0\\x+3=0\end{array}\right \ \ \textless \ =\ \textgreater \   \left[\begin{array}{ccc}x=1\\x=-2\\x=-3\end{array}\right
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8 0
3 years ago
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