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ruslelena [56]
3 years ago
14

Simplify (2+√-3/2)(2-√-3/2) 1/4,7/4, or 13/4

Mathematics
1 answer:
Anika [276]3 years ago
5 0

Answer:

<h2>11/2</h2>

Step-by-step explanation:

Exact Form:

11/2

Decimal Form:

5.5

Mixed Number Form:

5 1/2

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Sarah can make 3/5 of a necklace in 15 minutes. At this rate, how many necklaces, to the nearest tenth of a necklace, can sarah
galina1969 [7]

Answer:

She can make 2 2/5 necklace in one hour

Step-by-step explanation:

60/15=4 so she makes 3/5*4=12/5=2 2/5

8 0
2 years ago
A slice of pizza whose edges form a 32degrees angle with an outer crust edge 4 inches long was found in a gym locker. What was t
liq [111]

Answer:

The diameter was d=\frac{45}{\pi } in.

Step-by-step explanation:

The arc of a circle is given by

s=r\theta

where

s = arc length

r = radius of the circle

θ = measure of the central angle in radians.

From the information given

s = 4 in

θ = 32º

To find the diameter of the original​ pizza, we use the formula of the diameter of a circle

d=2r

First, we need to convert the angle to radians

\theta=32\º \cdot \frac{\pi}{180\º} =\frac{8\pi }{45}

Next, solve for r from the arc formula

r=\frac{s}{\theta} =\frac{4}{\frac{8\pi }{45}} =\frac{45}{2\pi }

Then, we use the diameter of a circle formula

d=2r=2(\frac{45}{2\pi })=\frac{45}{\pi }

5 0
3 years ago
An equilateral triangle with side length 7 cm is shown in the diagram, work out the area of the triangle.
ElenaW [278]
If a triangle has sides of 7 cm and it is an equilateral you can draw a line right down the middle to form two congruent triangles.

These smaller triangles have a hypotenuse of 7cm and a base of 3.5 cm (7/2)

To work out the height, use Pythagoras’ theorem.

a^2 + b^2 = c^2 where c is the hypotenuse and a and b are the other two sides

7^2 - 3.5^2 = 36.75

Square root answer

= 6.06 cm

That’s the height of the triangle

Area of a triangle is base x height divided by 2

So 7 x 6.06 = 42.43…

/2

= 21.2 cm^2 to one d.p

Hope this helped!
Please mark Brainliest!!
8 0
3 years ago
The first aspect of the argument you must evaluate is the truth of the reasons that are being used to support a conclusion. (Poi
Marina86 [1]
True because it the reasons used to support the conclusion are fake or false, then the argument is lost
6 0
3 years ago
Read 2 more answers
What is the perimeter of rectangle that has a width of 11 and a length of 25?
devlian [24]

Perimeter = 2l + 2w

w = 11

l = 25

2 * 25 = 50

2 * 11 = 22

22 + 50 = 72

The perimeter is 72.

5 0
3 years ago
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