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aliina [53]
3 years ago
7

What is the solution to the system of equations below?

Mathematics
1 answer:
mixer [17]3 years ago
5 0

\left\{\begin{array}{ccc}y=\frac{1}{2}x-4\\y=-2x-9\end{array}\right\Rightarrow\dfrac{1}{2}x-4=-2x-9\\\\\dfrac{1}{2}x-4=-2x-9\ \ \ |\cdot2\\\\x-8=-4x-18\ \ \ |+8\\\\x=-4x-10\ \ \ |+4x\\\\5x=-10\ \ \ |:5\\\\\boxed{x=-2}\\\text{substitute the value of x to the second equation}\\y=-2(-2)-9=4-9=-5\\\boxed{y=-5}\\\\\text{Answer:}\ x=-2;\ y=-5\to(-2;-5)

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sashaice [31]
Turn it into slope-intercept form.
2y = -x + 14
y = -x/2 + 7
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7 0
3 years ago
What is the distance between -2 and - 1 1/2
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I was trying to show my work but hope this could help you
3 0
3 years ago
If you know that the exact volume of a cylinder is 500 π cm3, how can you find the approximate volume, without knowing the heigh
grandymaker [24]

Answer:

The approximate volume is 1,570\ cm^{3}

Step-by-step explanation:

we know that

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V=500\pi \ cm^{3}

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6 0
3 years ago
Which statement is the if/then conditional statement of the following? Vertical angles are congruent.
FinnZ [79.3K]

An if-then statement must hold under any condition. Let's take it case by case:


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D. This one is the contrapositive of B, which makes it the exact same as B. Thus, this is not the answer. Contrapositive, by the way, just means that it's the inverse and opposite of a given statement. Let's say P is the contrapositive of Q. If this is the case, then if Q is true, P must be true. In our case, Option D is the contrapositive of Option B and since Option B is not true, neither is D.


7 0
2 years ago
Solve multi-step equation 3x + 2 = 14 - 3        ​
Dafna11 [192]

ANSWER

My Answer is in the photo above

5 0
3 years ago
Read 2 more answers
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