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3 years ago

Which step is not necessary when solving this system of equations by graphing? 3x-y=4 x+y= -4

Mathematics

2 answers:

puteri [66]3 years ago

6 0

Answer:

determine the shaded area for each line

Step-by-step explanation:

its not need

lions [1.4K]3 years ago

3 0

Answer: The answer is C: determine the shaded area for each line.

Just took the test on Edg.

Step-by-step explanation:

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Raymond was asked to solve for the length of the hypotenuse in a right triangle with legs that have side lengths of 4 and 5. His

ohaa [14]

Answer:

Raymond's mistake was on the last step, since he didn't square root both sides

The correct answer should be

$c = \sqrt{41}$

Step-by-step explanation:

$a^2 + b^2 = c^2\\4^2 + 5^2 = c^2\\16 + 25 = c^2\\c^2 = 41\\c = \sqrt{41}$

Good luck!

3 0

3 years ago

Comment all that apply

max2010maxim [7]

MCEA=90
mBEF=135
CEF is straight
AEF is right<span />

4 0

3 years ago

Can someone help me?

Readme [11.4K]

Answer:

Step-by-step explanation:

The answer is B because if you move two times to the right it gives you 0.09 like the eqution.

But scientific notation requires number without decimal, so the answer cannot be E because 0.9 is a decimal.

Just reminder: B and D have the same result!! just different coefficient

5 0

3 years ago

Read 2 more answers

4x + 2(x - 5) - 3(2x -4)

Olegator [25]

Answer:

Step-by-step explanation:

Pull out like factors :

2x - 4 = 2 • (x - 2)

(4x + (2 • (x - 5))) - 6 • (x - 2)

(4x + 2 • (x - 5)) - 6 • (x - 2)

Final Answer:

5 0

3 years ago

Tan + Cos / 1 + Sin = Sec

yaroslaw [1]

$\tan x+\frac{\cos x}{1+\sin x}\\\\ =\frac{\sin x}{\cos x}+\frac{\cos x}{1+\sin x}\\\\=\frac{\sin x(1+\sin x)+\cos^{2} x}{\cos x(1+\sin x)}\\\\=\frac{\sin^{2} x+\cos^{2} x+\sin x}{\cos x(1+\sin x)}\\\\=\frac{1+\sin x}{\cos x(1+\sin x)}\\\\=\frac{1}{\cos x}\\\\=\sec x$

7 0

2 years ago