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Andrew [12]
3 years ago
8

Need help with mathematics

Mathematics
1 answer:
vredina [299]3 years ago
3 0

ABC is congruent to C-MNP

-Steel jelly


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Using a sheet of graph paper, solve the following system of equations graphically. Be sure to show any work, use a straight edge
madam [21]

Answer:

<h2> (-1,1)</h2>

Step-by-step explanation:

Given system is

\left \{ {{x+y=0} \atop {x-y+2=0}} \right.

If we graph, the solution would be the interception point between these two lines, because each linear equation represents a line. The lines are attached.

In the graph, you can observe that the solution is the point (-1,1), that is x = -1 and y = 1.

Now, if we want to solve this system by another method, we can just sum both equations and solve for <em>x</em>

\left \{ {{x+y=0} \atop {x-y+2=0}} \right.

2x+2=0\\x=\frac{-2}{2}=-1

Then, we replace this value in one equation to find the other value

x+y=0\\-1+y=0\\y=1

Therefore, the solution is (-1,1)

4 0
3 years ago
Please help me.
Nat2105 [25]

Answer:

91.4 inches

Step-by-step explanation:

I will leave the explanation in the comments.

7 0
3 years ago
Read 2 more answers
What is the total value of 245 $1 bills
Fantom [35]
What do you mean... $245???
3 0
4 years ago
Read 2 more answers
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 35 bacteria reveals a sampl
pickupchik [31]

Answer: Sample size would be 296.

Step-by-step explanation:

Since we have given that

Standard deviation = 4.8 hours

Margin of error = 0.65 hours

At 98% level of confidence, z = 2.33

So, It becomes,

0.65=z\times \dfrac{\sigma}{\sqrt{n}}\\\\0.65=2.33\times \dfrac{4.8}{\sqrt{n}}\\\\\dfrac{2.33\times 4.8}{0.65}=\sqrt{n}\\\\n=(\dfrac{11.184}{0.65})^2\\\\n=17.206^2\\\\n=296.051

Hence, sample size would be 296.

7 0
3 years ago
Kai wrote the number 85 on the board. Is 85 a prime or composite?
Lesechka [4]
85 is not a prime, it’s a composite number.
7 0
3 years ago
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