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3 years ago

Find the surface area of a sphere with radius, r= 12 in.

Mathematics

1 answer:

zvonat [6]3 years ago

8 0

1809.56

just plug it in the surface area formula of a sphere and do the math

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In XYZ, mX=90 and mY=30.In TUV,mU= 30 and mV=60. Which is true about the two triangles? XYZ=TUV, XYZ= VUT,No congruency statemen

Flauer [41]

Answer:

No congruency statement can be made because the side length are unknown.

Step-by-step explanation:

The sum of the measures of all interior angles in a triangle is always 180°.

In triangle XYZ,

$m\angle X=90^{\circ}\\ \\m\angle Y=30^{\circ},$

then

$m\angle X+m\angle Y+m\angle Z=180^{\circ}\Rightarrow m\angle Z=180^{\circ}-90^{\circ}-30^{\circ}=60^{\circ}$

In triangle TUV,

$m\angle U=30^{\circ}\\\\m\angle V=60^{\circ},$

then

$m\angle T+m\angle U+m\angle V=180^{\circ}\Rightarrow m\angle T=180^{\circ}-30^{\circ}-60^{\circ}=90^{\circ}$

We have two triangles with congruent angles but we have no information about side lengths. Therefore, can not be made because the side length are unknown. Correct option is last option.

6 0

3 years ago

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What is 2+2 in math and the answer is 4

Marianna [84]

Answer:

Step-by-step explanation:

7 0

2 years ago

Which statements are correct? Check all that apply.

Vadim26 [7]

Answer:

Arc FE is a minor arc.

Step-by-step explanation:

i cant really explain

4 0

2 years ago

Prove: An odd number squared is an odd number. = (2n + 1)2

Mnenie [13.5K]

Answer:

${(2n + 1)}^{2} = 4 {n}^{2} + 4n + 1 = 2(2 {n}^{2} + 2n) + 1$

4 0

2 years ago

Mathematical question, please see the picture. Thanks

KengaRu [80]

Answer:

B) $23.45

C) $157.50

A + B + C = $330.95

Step-by-step explanation:

$6.70 × 20 = $137 17.5% of $137 = $23.45

45c × 350 = $157.5

$150 + $23.45 + $157.50 = 330.95

6 0

2 years ago