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3 years ago

You move down 2 units and up 7 units. You end at (-1,4). Where did you start?

2 answers:

6 0

If you are going up and down, then you are referrig to the y-axis so you would focus on the 4. subtract 2 to get 2 then add 7 to get 9 and plug your answer back in to get (-1,9).

Tomtit [17]3 years ago

6 0

You would of started at (-1,-1) because if you moved down 2 units you'd be at (-1,-3) then when you move up seven you would be at (-1,4).

So the answers (-1,-1)

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What is (3.14)(87.5)²=____?

Radda [10]

Answer:

24040.625

Hope this helped! I'm not good at explaining the steps, but this is the answer.

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2 years ago

What is the product of the complex numbers 3 - 4iand 6+i where i= -1

mixas84 [53]

Answer:

Step-by-step explanation:

Since i=-1, we can rewrite the equation as 3-[4(-1)} multiplied by 6+(-1). Since

4 x-1=, 3-(-4)=7. 6-1=5, and 7x5=35.

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2 years ago

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galben [10]

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3 years ago

The length of each side of an equilateral triangle is increased by 20%, resulting in triangle ABC. If the length of each side of

kompoz [17]

Answer: Area of ΔABC is 2.25x the area of ΔDEF.

Step-by-step explanation: Because equilateral triangle has 3 equal sides, area is calculated as

$A=\frac{\sqrt{3} }{4} a^{2}$

with a as side of the triangle.

Triangle ABC is 20% bigger than the original, which means its side (a₁) measures, compared to the original:

a₁ = 1.2a

Then, its area is

$A_{1}=\frac{\sqrt{3} }{4}(1.2a)^{2}$

$A_{1}=\frac{\sqrt{3} }{4}1.44a^{2}$

Triangle DEF is 20% smaller than the original, which means its side is:

a₂ = 0.8a

So, area is

$A_{2}=\frac{\sqrt{3} }{4} (0.8a)^{2}$

$A_{2}=\frac{\sqrt{3} }{4} 0.64a^{2}$

Now, comparing areas:

$\frac{A_{1}}{A_{2}}= (\frac{\sqrt{3}.1.44a^{2} }{4})(\frac{4}{\sqrt{3}.0.64a^{2} } )$

$\frac{A_{1}}{A_{2}} =$ 2.25

The area of ΔABC is 2.25x greater than the area of ΔDEF.

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2 years ago

Carl and Tamera want to compare their tests in math class. They have taken six tests. Should they use the mean, median or mode t

Roman55 [17]

Answer:

Mean

Step-by-step explanation:

I said mean because it would allow both Carl and Tamera to average their scores and compare one side by side rather than comparing 6 each which would just be time consuming and it seems like it wouldn't be any other choices.

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2 years ago