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Marina86 [1]
3 years ago
12

Using substitution, what would be the best first step to solve this system of equations?

Mathematics
1 answer:
Mariulka [41]3 years ago
8 0

Answer:

subtracting x from the first equation

Step-by-step explanation:

then you could plug in y=10-x into the second equation and it'd look like this:

2(10-x)=x+6

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I REALLY NEED HELP FOR THIS ONE
Natasha2012 [34]

Answer:

<h2>            A = 27(2√3-π) cm² ≈ 8.71 cm²</h2>

Step-by-step explanation:

Area of shaded region it is area of hexagon minus area of circle.

A regular hexagon is comprised of six equilateral triangles (of the same sides).

So its area:  A_1=6\cdot\dfrac{S^2\sqrt3}{4}=\dfrac{3S^2\sqrt3}2     {S = side of the triangle}

Height (H) of such a triangle is equal to radius (R) of a circle inscribed in the hexagon:

R = H = \dfrac{S\sqrt3}{2}

Area of shaded region:

A=A_1-A_\circ=\dfrac{3S^2\sqrt3}2-\pi R^2=\dfrac{6S^2\sqrt3}4-\pi\left(\dfrac{S\sqrt3}2\right)^2=\dfrac{S^2(6\sqrt3-3\pi)}4

S = 6 cm

so:

A=\dfrac{6^2(6\sqrt3-3\pi)}4=\dfrac{36(6\sqrt3-3\pi)}4=9(6\sqrt3-3\pi)=27(2\sqrt3-\pi)\ cm^2\\\\A=27(2\sqrt3-\pi)\ cm^2\approx8.71\ cm^2

3 0
3 years ago
What do you call a line segment which passes throughthe center of the circle from on side to the other?​
tatiyna

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  • <em>D</em><em>i</em><em>a</em><em>m</em><em>e</em><em>t</em><em>e</em><em>r</em>

3 0
2 years ago
Read 2 more answers
BRAINLIEST + 5 STAR RATING AND A THANKS FOR THE RIGHT ANSWER!!!!! PLEASE HELP ME WITH THIS !!!!!!
antiseptic1488 [7]

Answer:

1) 37.5%

2) 27.27%

Step-by-step explanation:

q1) Pct. Increase = (82500-60000) / 60000= 0.375

Pct increase = 0.375 x 100 = 37.5 percent

q2)

Pct decrease = (44000-32000)/44000 = 0.2727...

0.2727 x 100 = 27.27%

4 0
3 years ago
Is the 161 rounded to the nearest 10 or to the nearest 100
kaheart [24]

Answer:

10

Step-by-step explanation:

so you can make it 200

5 0
3 years ago
Please help me on 17-18!<br> I have no clue on what to do on the problems at hand.
nika2105 [10]

If you would have to graph x=7, you probably know that this is a vertical line at, well, x=7.

| x | = 7 is nothing more than two vertical lines, namely x=7 or x=-7, as you already wrote down.

| x | = -8 has no (real) solutions, so there is nothing to graph.

7 0
3 years ago
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