4 years ago

Can someone please help me with this?

1 answer:

4 0

The circumference of a circle with radius $r$ is $2\pi r$ . If the length of the radius is tripled, then the circumference becomes $2\pi(3r)=3\cdot2\pi r$ , which is just 3 times the original circle's circumference.

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Work out (8x10^-3) x (2x10^-4)

love history [14]

Answer:

$1.6 \times 10^{-6}$

Step-by-step explanation:

$(8 \times 10^{-3}) \times (2 \times 10^{-4})$

$8 \times 2 \times 10^{-3} \times 10^{-4}$

$16 \times 10^{-3+(-4)}$

$16 \times 10^{-3-4}$

$16 \times 10^{-7}$

$1.6 \times 10^{-6}$

3 0

4 years ago

Read 2 more answers

Determine whether the equation defines y as a function of x. y = 2x + 8

Svetradugi [14.3K]

We have that
y = 2x + 8
for x=1-----------> y=2*1+8=10
for x=2-----------> y=2*2+8=12
for x=3-----------> y=2*3+8=14
.
.
.

the equation y = 2x + 8 ----------- > defines y as a function of x, because <span>for each x there is only one value of y</span>.

the answer is
yes, the equation y = 2x + 8 defines y as a function of x

6 0

3 years ago

What is the answer to (4*10^6)*(1*10^4)

nataly862011 [7]

Answer:

Scientific notation: 4 x 10^10

Expanded form: 40,000,000,000

Step-by-step explanation:

(4 x 10^6) x (1 x 10^4)

(4 x 1,000,000) x (1 x 10,000)

(4,000,000) x (10,000)

40,000,000,000

6 0

3 years ago

How do I change z= -14+ 8i from rectangular form to polar form?

Olenka [21]

The answer will be z=-6 because 16-8=6

3 0

4 years ago

Change 0.47 (with just the 7 repeating) into a fraction

Alexxx [7]

Answer: 47/100

Step by-step explanation:

3 0

3 years ago