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igor_vitrenko [27]
3 years ago
10

I need help on this question ( Please show all work and explain clearly )

Mathematics
2 answers:
Nadya [2.5K]3 years ago
8 0

Answer:

C

Step-by-step explanation:

The equation of the area of a circle is \pi r^{2}.

We already know the diameter is 8, and the radius is half of the diameter, so it would be 4.

\pi 4^{2}. This is our equation now. Now, we need to square 4, and 4x4 is 16.

Since 16\pi and \pi16 are the same, C is the correct answer.

Vanyuwa [196]3 years ago
5 0

Answer:

C

Step-by-step explanation:

The area (A) of a circle is calculated as

A = πr² ( where r is the radius )

Here diameter = 8 cm , thus r = 8 ÷ 2 = 4 cm , thus

A = π × 4² = 16π cm² → C

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(Brainlesest) Which inequality is represented by the graph?
Sever21 [200]

Answer:

B

Step-by-step explanation:

By inspection we can see that the slope of the line is m = 2/5; as x increases by 5, y increases by 2.  Next, also by inspection, we see that the y-intercept is (0, 3/2).  Using the slope-intercept formula y = mx + b, we get y = (2/5)x - 3/2.  

Let's take a look at Answer B:  If we divide all three terms by 2, we get:

(2/5)x -  y > 3/2.  This matches the equation found earlier, y = (2/5)x - 3/2 if we rewrite (2/5)x -  y > 3/2 as (2/5)x - 3/2 > y.

Thus, all points that satisfy this inequality are BELOW the y = (2/5)x - 3/2,

Answer B is the correct one.

7 0
3 years ago
Find the amount of the annuity.
Montano1993 [528]
The formula of the future value of annuity ordinary is
Fv=pmt [(1+r/k)^(kn)-1)÷(r/k)]
Fv future value?
PMT payment 6200
r interest rate 0.06
K compounded semiannual 2
N time 5 years
Fv=6,200×(((1+0.06÷2)^(2×5)) ÷(0.06÷2))=277,742.72

Hope it helps
5 0
3 years ago
In quadrilateral ABCD AB||CD and m/_2 =31 what is m/_5
Lady_Fox [76]

Answer:

5 is ALSO 31⁰ BECAUSE THE LINES ARE PARALLEL

GIVE BRAINLIEST PLZ

6 0
3 years ago
In completing the following proof, which of the following statements should be included?
fiasKO [112]

Answer:

Option (2) CPCTC

Step-by-step explanation:

In the given regular triangle ADF, all sides and angles of the triangle will be equal

∠A = ∠D = ∠F = 60°  

And DE = EF [Since E is the midpoint of side DF]

                    Statements                   Reasons

1). ∠D ≅ ∠F                                        Given

2). ∠DBE ≅ ∠ECF                              Given

3). DE ≅ EF                                        Given

4). ΔDBE ≅ ΔECF                        By AAS property

Therefore, DB ≅ FC

Option (2) Corresponding parts of the congruent triangles are congruent (CPCTC)

7 0
3 years ago
Explain how you can determine the sign of the sum of two integers if one integer is positive and the other integer is negative.
Neporo4naja [7]

Answer:

To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest.

Step-by-step explanation:

So, here's an example.

Lets say you have this problem:

-4+5

The answer would be 1 because when you add integers with different signs, you keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest.

Here's another:

7-2

The answer would be 5 because you keep the sign of the number with the largest absolute value and subtract the smaller absolute value from it.

4 0
3 years ago
Read 2 more answers
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