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2 years ago

Help with Math homework

Mathematics

1 answer:

coldgirl [10]2 years ago

6 0

You were doing everything correctly! Keep in mind that a straight line is 180 degrees and a triangle has 180 degrees, because I see that some of your questions involve lines.

also remember vertical angles! If you have any specific question, I would be happy to help!

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HELP QUICK choose the equation that represents the graph below

stiks02 [169]

Answer:

y= -2/3x+6

Step-by-step explanation:

so answer is C

7 0

2 years ago

Help me plz I NEED HELP WITH THIS

Debora [2.8K]

Answer:

7 is about 6 because it says to round to the nearest whole number

Step-by-step explanation:

8 is about 3 because it say to round to the nearest whole number

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3 years ago

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KiRa [710]

Answer: B

Step-by-step explanation:

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2 years ago

Write 5^4 in standard form

AfilCa [17]

Answer:

625

600+20+5

Step-by-step explanation:

Parenthesis

Exponent

Multiply

Divide

Add

Subtract

From left to right.

Do exponent first.

$5^4=5*5*5*5=625$

Standard form of 5^4 is: ⇒ 600+200+5

625 is the correct answer.

600+200+5 is the correct answer.

4 0

2 years ago

Read 2 more answers

If for two non-zero vectors a,b : ∣a+b∣=∣a−b∣ then angle between them is:______a. 0b. 45c. 60d. 90

Eddi Din [679]

Answer:

$90^\circ$

Step-by-step explanation:

Given two non zero vectors, $\vec a, \vec b$ .

Let the angle between the two vectors = $\theta$

Given that:

$|\vec a+\vec b|=|\vec a-\vec b|$

Let us have a look at the formula for magnitude of addition of two vectors:

$|\vec x+\vec y|=\sqrt{x^2+y^2+2xycos\theta}$

Where $\theta$ is the angle between the two vectors.

formula for magnitude of subtraction of two vectors:

$|\vec x-\vec y|=\sqrt{x^2+y^2-2xycos\theta}$

As per the given condition:

$\sqrt{a^2+b^2+2abcos\theta}=\sqrt{a^2+b^2-2abcos\theta}$

Squaring both sides:

$a^2+b^2+2abcos\theta=a^2+b^2-2abcos\theta\\\Rightarrow 2abcos\theta=-2abcos\theta\\\Rightarrow cos\theta = -cos\theta\\\Rightarrow 2cos\theta = 0\\\Rightarrow cos\theta = 0\\\Rightarrow \theta = 90^\circ$

So, the angle between the two vectors is: $90^\circ$

7 0

2 years ago