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olga_2 [115]
3 years ago
10

Cineva va rog!

itle="( - 4 + 9) \times (1 - 8)" alt="( - 4 + 9) \times (1 - 8)" align="absmiddle" class="latex-formula">
Clasa 6 ​
Mathematics
1 answer:
nevsk [136]3 years ago
5 0

Step-by-step explanation:

( - 4 + 9) \times (1 - 8) \\  = 5 \times ( - 7) \\  =  - 35

hope it helps:)

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I know i have been asking alot of questions today but i really need your help
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Answer:

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Step-by-step explanation:

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6 0
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3 years ago
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Annabelle the ant and Archibald the ant are on a large coordinate grid. Annabelle is at (3,4) and Archibald is at (33,44). If bo
kvasek [131]

<u>Part a)</u> If both ants skate directly towards each other, starting at the same time and skating the same speed, what will be the coordinates of their meeting place?

Let

A(3,4)  B(33.44)

we know that

If both ants skate directly towards each other, starting at the same time and skating the same speed

then

the coordinates of their meeting place is the midpoint AB

<u>Find the midpoint AB</u>

in the x-coordinate

(3+33)/2=18

in the y-coordinate

(4+44)/2=24

the midpoint AB is (18,24)

therefore

<u>the answer Part a) is </u>

the coordinates of their meeting place is (18,24)

<u>Part b)</u> How far will each ant skate?

<u>Find the distance AB</u>

d=\sqrt{(x2-x1)^{2}+(y2-y1)^{2}}

substitute the values

dAB=\sqrt{(33-3)^{2}+(44-4)^{2}}

dAB=\sqrt{2,500} units

dAB=50 units

<u>Find the half distance AB</u>

50/2=25 units

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7 0
3 years ago
Write an integral in polar coordinates equivalent to the following:​
Alex73 [517]

The region is a segment of a circle with radius √2 lying above the line y=1. In polar coordinates, this line has equation

y = r\sin(\theta) = 1 \implies r = \csc(\theta)

and the circle has equation

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The two curves meet when

\csc(\theta) = \sqrt2 \implies \sin(\theta) = \dfrac1{\sqrt2} \implies \theta = \dfrac\pi4 \text { or } \theta = \dfrac{3\pi}4

Then the same integral in polar coordinates is

\displaystyle \int_{-1}^1 \int_1^{\sqrt{2-x^2}} xy \, dy \, dx = \boxed{\int_{\pi/4}^{3\pi/4} \int_{\csc(\theta)}^{\sqrt2} r^3 \cos(\theta) \sin(\theta) \, dr \, d\theta}

4 0
1 year ago
suppose you have a rectangle with a length 8 cm and width 3 cm. Now suppose the sides are doubled. Find the percent os increase
mr Goodwill [35]
The original perimeter is 22 cm.

If both sides are doubled, the length would be 16 cm and the width would be 6 cm.
The perimeter would be 44 cm.

22/44 is 50%.
3 0
3 years ago
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