3 years ago

Please help me i need help on this

Mathematics

1 answer:

charle [14.2K]3 years ago

8 0

(x+y)² finds the area of the outer square, squaring its side length

z² + 4(1/2 xy) finds the area of the outer square by adding...

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1 2 3 4 .... 1002 what is the sum of the sequence

Reika [66]

<span>As far as i know it is related to Gauss.
Write the sequences forward and backward first.

1 +2 +3 +.....+1002
1002+1001+1000+.....+1
--------------------------------------... Adding them
1003+1003+......(1002 times)
=1002x1003
But this contains the series twice.
So, the sum is = 1002x1003/2=501x1003=502503. answer</span>

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2 years ago

The coordinates of the vertices of triangles are listed in the options below. Which is a right triangle?

Kisachek [45]

<span>A(−3, 2), B(−4, −9), C(8, 1)
This is the right answer.
The slope of AB is perpendicular to the slope of BC.</span>

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3 years ago

There are 24 students in Ms. Woodall's. Half of the students are boys and 1/3 of the boys have brown hair. What's the number of

Natali [406]

4 boys have brown hair because 1/2 of 24 is 12 and 1/3 of 12 is 4

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3 years ago

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Solve this system of equations by graphing. First graph the equations, and then type the solution.

Ostrovityanka [42]

Answer:

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2 years ago

What is the common ratio of the geometric sequence: -1/12.-1/2,-3,18,...

Minchanka [31]

$\frac{1}{6}$ : Common ratio

Check:
= $-\frac{1}{12}$ ÷ $\frac{1}{6}$
= $-\frac{1}{12}$ × 6
= $-\frac{1}{2}$

= $-\frac{1}{2}$ ÷ $\frac{1}{6}$
= $- \frac{1}{2}$ × 6
=-3

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2 years ago