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4 years ago

A circle's diameter is always the length of its radius.

Mathematics

1 answer:

satela [25.4K]4 years ago

7 0

Answer:

False

Step-by-step explanation:

The diameter is the length from one point of a circle to the opposite point, or farthest point, but the radius is the length from a point on the circle to the center, therefore the radius is always half the diameter

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(x + 5)(x – 5)<br> Multiply

Vsevolod [243]

Answer:

${x}^{2} - 25$

Step-by-step explanation:

$(x + 5)(x – 5) \\ \\ = {(x)}^{2} - {(5)}^{2} \\ \\ = {x}^{2} - 25$

8 0

3 years ago

Read 2 more answers

If f(g(x)) = g(f(x)) = x, and<br> g(x) = 2 + In(x + 1), find f(4).

Dmitriy789 [7]

If $f(g(x))=g(f(x))=x$ , then $g$ and $f$ are inverses of one another. So we know $g(f(4))=4$ .

$g(f(4))=2+\ln(f(4)+1)=4$

$\implies\ln(f(4)+1)=2$

$\implies f(4)+1=e^2$

$\implies\boxed{f(4)=e^2-1}$

5 0

3 years ago

Brad has $12 more than John. Together they have $84

ludmilkaskok [199]

Hello,

John : n

Brad : n + 12

n + n + 12 = 84

2n + 12 = 84

2n = 84 - 12

2n = 72

n = 72/2

n = 36

John $36 and Brad $36 + $12 = $48

6 0

2 years ago

Read 2 more answers

What is the scale factor from triangle WHB to triangle RVM

Studentka2010 [4]

Answer:

Step-by-step explanation:

Going from WHB to RVM means that we need the number to multiply by to get to RVM, the smaller triangle.

Multiplying by .5 is the same as dividing by 2.

20 x .5 = 10

16 x .5 = 8

12 x .5 = 6

4 0

3 years ago

What is the estimated sum? Round each number addend to the nearest thousand before adding. 75,364 + 472,756

laila [671]

B. 548, 000

75,364 rounds down to 75,000 because of the 3. 472,756 rounds up to 473,000 because of the 7.
75,000 + 473,000 = 548000

5 0

3 years ago