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3 years ago

Choose which one you believe doesn't belong.

Mathematics

1 answer:

vodka [1.7K]3 years ago

3 0

Answer:

All the other numbers if you add up their digits it is 8.

1 + 7 = 8

2 + 6 = 8

4 + 4 = 8

6 + 5 = 11

Is only number divisible by 13.

44 is only divisible by 11

Step-by-step explanation:

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Help with trigonometry

diamong [38]

Answer:

cos ∠CBD = - 4√41 / 41

Step-by-step explanation:

AB = 4 ΔABC = (4 x AC) / 2 = 10

AC = 5

BC = √5² + 4² = √41

cos ∠CBD = cos (180° - ∠CBA) = cos 180° cos ∠CBA + sin 180° sin ∠CBA

(cos 180° = - 1 sin 180° = 0 cos ∠CBA = 4 / √41 )

cos ∠CBD = (-1) x cos ∠CBA = - 4 / √41 = - 4√41 / 41

4 0

3 years ago

Last question please help me

Inessa [10]

Answer: OPTION D

Step-by-step explanation:

The formula for calculate the surface area of a rectangular prism is:

$SA_{rp}=2(wh+lw+lh)$

Where w is the width, h is the height and l is the length.

You can see in the figure attached that:

l=3.4ft

w=3ft

h=4.1ft

Therefore, when you substitute these values into the formula you obtain that the surface area is:

$SA_{rp}=2[(3ft*4.1ft)+(3.4ft*3ft)+(3.4ft*4.1ft)]=72.88ft^{2}$

3 0

3 years ago

A triangle has side lengths of 17 inches, 19 inches, and 10 inches. What kind of triangle is it?

Virty [35]

Answer:

Scalene triangle

Step-by-step explanation:

a scalene triangle has 3 uneven sides

8 0

3 years ago

Please help me with these two math questions! Thank you ! :)

notka56 [123]

I think it might be c hope that helps you

5 0

3 years ago

Use the diagrams below to derive the formula for the volume of a hemisphere.

Zigmanuir [339]

Answer:

2/3 $\pi$ r²

Step-by-step explanation:

5 0

3 years ago