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OleMash [197]
2 years ago
8

Someone please help me

Mathematics
1 answer:
pentagon [3]2 years ago
8 0

Answer:

Option 3 or Option 4.

Step-by-step explanation:

I have this doubt because actually, a rhombus with a right angle (one) is not necessarily a square. Some rhombuses have one right angle and are still not squares. Now, if the four angles are right, it is a square, but this only says one.

On other hand, a parallelogram with congruent diagonals isn't a square necessarily either. Rectangles have congruent diagonals and are parallelograms.

In case you only can answer with one, I'll say is option 3, hope it helps!

 

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Find the circumference of a circle with radius, r = 6.8m. Give your answer rounded to 1 DP.
Assoli18 [71]

Answer:

42.7 m

Step-by-step explanation:

The Circumference of a circle is found by multiplying the radius of the circle by 2π.  Here the radius is 6.8 m.  The circumference of this circle is

C = 2π(6.8 m) = 13.6π m, or (to 1 decimal place, 42.7 m.

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3 years ago
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Solnce55 [7]
It depends on what you mean by the delimiting carats "^"...

Since you use parentheses appropriately in the answer choices, I'm going to go out on a limb here and assume something like "^x^" stands for \sqrt x.

In that case, you want to find the antiderivative,

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Now, recall that \sqrt{x^2}=|x|. But we want the substitution we made to be reversible, so that

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\displaystyle\int\frac{\mathrm dx}{\sqrt{9-8x-x^2}}=\sin^{-1}\left(\frac{x+4}5\right)+C
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den301095 [7]
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3 0
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Read 2 more answers
(this is separate)
leva [86]

Answer: 2/1

Step-by-step explanation:

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