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nirvana33 [79]
3 years ago
11

Plz help will mark brainliest!!

Mathematics
2 answers:
vagabundo [1.1K]3 years ago
5 0

Answer:

Given:

Diameter = 38cm

Radius = Diameter /2

Radius = 38 / 2

Step-by-step explanation:

Inessa05 [86]3 years ago
4 0

Answer:

B) 19

Step-by-step explanation:

Radius is have of the diamater so I did 38 divided by 2 and I got 19.

HOPE THIS HELPS!!!

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A square has a triangular hole in it. What is the area of the figure?
amm1812

Answer:

B. 10 x 10 = 100. 5 x 3 / 2 = 7.5. 100 - 7.5 = 92.5

Step-by-step explanation:

4 0
3 years ago
Prove (correctly) that if 1 = -1, then 2=1
Nitella [24]

Answer:

This may not be entirely satisfied proof but you should get the idea.

Proof: Start with 1 = -1.

Then we know that if a= b then a + c = b + c and also a / c = b / c.

So we can add 1 to both sides.

We have 1 + 1 = -1 + 1   ⇒   2 = 0.

Now divide both sides by 2 and we would have 1 = 0.

Now add both sides by 1. This yields 2 = 1.

Therefore if 1 = -1 then 2 = 1.

QED

6 0
3 years ago
Is DEF a right triangle? True or false
umka2103 [35]
Short answer = false
Remark

If it is a right triangle, it will obey the Pythagorean Equation. a^2 + b^2 = c^2. Let's see if it does.

Equation
a^2 + b^2= c^2
c must be the longest line. (Hypotenuse)

Givens
a = 24
b = 17
c = 40

Sub and Solve
a^2 + b^2 = c^2
17^2 + 24^2 = c^2 [We'll see if this comes out to 40]

289 + 576 = c^2
865 = c^2 which is no where near what 40^2 equals. 40^2 = 1600

Short answer False

Square root of 865 = (865)^1/2 = 29.4
5 0
4 years ago
For what value(s) of k will the relation not be a function. <br><br> S={2-|k+1|, 4), (-6,7)}
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Step-by-step explanation:

I have been a while. I have been a while to find a place on a daily, and a bit. I have been made in a couple. This email and any files which I think it was not the same. We will have the same. We will have the same. We will have the same. We will have the same

4 0
3 years ago
What is whats the circumference of a diamater of 443 sq inches on a circle
fiasKO [112]
If its diameter is 443 square inches, then its circumference is:

443 π square inches, as C=πd.
8 0
4 years ago
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