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3 years ago

Please help me with this

Mathematics

2 answers:

Brut [27]3 years ago

4 0

Answer:

c*2=a2+b*2

c*2=3*2+6*2

c*2=9+36

c=root of 45

root of 45*8(sincethere are 8 sides if roots of45

Zolol [24]3 years ago

3 0

Answer:

108

Step-by-step explanation:

Surface area = total area of net

The net is made up of 2 unique shapes

A square with a side length of 6

The area of a square can be calculated by squaring the side length

6^2 = 36

The area of the square = 36

The net is also made up of 4 triangles

The triangles have a base length of 6 and a height of 6

The area of a triangle can be calculated by using the formula A = (bh) / 2

Where b = base length and h = height

If the triangles have a base length of 6 then b = 6 and if they have a height of 6 then h = 6

So A = 6*6/2

6 * 6 = 32

32/2 = 18

We then multiply that by 4 to get the area of all four triangles

18 * 4 = 72

Finally we add the areas together

72 + 36 = 108

The surface area is 108

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6 + (-9) - (-4) - 3 help

Grace [21]

Hi!

Answer:

6 + (-9) - (-4) - 3 =

= 6 - 9 - b (-4) - 3

= 6 - 9 + 4b - 3

= -6 + 4b

= 4b - 6

I hope I helped you! Good luck at school!

7 0

3 years ago

Find the solution(s) y= x + 1 y= x² - 4x + 5

Genrish500 [490]

Answer:

1. Many possible solutions, two solutions would be: (-1,0) and (1,0)

2. x = −

± i

Step-by-step explanation:

For the first equation, since its linear, there are many possible solutions!

two solutions would be: (-1,0) and (1,0)

For the second one, replace y with 0 and solve

x = −2 ± i

Hope i helped, brainliest would be appreciated

Have a nice day!

-Aadi x

5 0

3 years ago

Makovka662 [10]

Answer:

Option A ( -3/2 , $\frac{-3\sqrt{3} }{2}$ )

Step-by-step explanation:

According to Question, The Spinner Rotate 600* Thus after Completing 360* it Comes Exactly Where It Started . Now again rotate It 180* .

Now We Are on ( -X axis ) & Completed 360*+180*=540* Rotation

Now After Rotate It 60* More we come in Third Quadrant & Here In Third Quadrant Only Tangent & Cotangent Is Positive .(Sine & Cosine is Negative)

(For Diagram, Please Find in attachment)

Now In Triangle OAB

Cos60* = OA / OB

1/2 = -X / 3 Thus X= -3/2

Sin60* = AB / OB

$\sqrt{3}$ /2 = -Y / 3 Thus Y = - $\sqrt{3}$ * 3 /2

6 0

3 years ago

X divided by 3 equal -12

sammy [17]

The answer would be -36 because all i did is multiply -12 with 3 and you get -36.

hope this helped :)

7 0

4 years ago

Read 2 more answers

Could anyone help me with this? (we are learning area of a circle)

REY [17]

Radius=diameter/2

semicircle=1/2pir^2
hmm
is area of circle with diameter of 1/2x
interesting
umm
the area of a semicircle with a diameter of x is (1/8)pix²
the area of a circle with diameter of 1/2x is (1/4)pix²
1/8pix² is 1/2 of 1/4pix²

first blank is 1/2 or half

circle's diameter is 1/2x
the radius of the seimicircle is x/2 or 1/2x
the circles's diameter is the same as the radius of the semicircle

the area of the semicircle with diameter of 4 is about
radius=4/2=2
1/2pi2^2=2pi or about 3.28 in²

area of circle with diameter of 2in is about
2/2=1, radus is 1
area=pi1²=pi=3.14 in²

answers

The area of a semicircle with a diameter of x is half the area of a circle with a diameter of $\frac{1}{2}x$

The circle's diameter is equal to the radius of the semicircle

The area of the semicircle is about 6.28 square inches.

The area of the circle with a diameter of 2 inches is about 3.14 square inches.

see attachment if you still don't know

8 0

4 years ago