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3 years ago

Please helppp a. what's the domain of c

Mathematics

1 answer:

snow_tiger [21]3 years ago

4 0

Answer:

Step-by-step explanation:

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Please helpppp meee

Brrunno [24]

Answer:

$\frac{20}{7}$ hours per day

Step-by-step explanation:

Given,

Distance = 192 miles

Rate = 9.6 miles per hour

Lets find her total time of riding by using Distance Formula ( D = RT ).

D = RT

192 = 9.6T

T = 192/9.6

T = 20 hours

Total time she needs to meet goals is 20 hours.

There are 7 days in a week and she plans to ride same hours each day, so that will be:

20/7 hours per day

8 0

3 years ago

Suppose a bus arrives at a bus stop every 30 minutes. If you arrive at the bus stop at a random time what is the probability tha

yarga [219]

Answer:

D. 5/6

I just took it, it's correct.

4 0

3 years ago

Read 2 more answers

If a stadium has 15,000 seats sold at $12.50 each, how much can be made if the stadium sells out?

Sindrei [870]

Answer:

187,500

Step-by-step explanation:

each seat is 12.50$

there are 15,000 seats

so you multiply 12.50$ by 15,000

12.50+15000= 187,500

8 0

2 years ago

Find an equation of combined variation where a varies directly as b and inversely as c. One set of values is a = 4, b = 12, and

Ber [7]

Answer:

Combined equation is $a = \frac{kb}{c}$

Step-by-step explanation:

a varies directly as b and inversely as c.

This can be written as

a = $k \times b$

a = kb

where k is the proportionality constant

$a = \frac{kb}{c}$ -------------------------------------(1)

Now lets find the k value bu substituting the given a, b,c values

$4 = \frac{k (12)}{9}$

$9 \times 4 = 12k$

36 = 12 k

$k = \frac{36}{12}$

k = 3

Thus the eq(1) becomes

$a = \frac{3b}{c}$

Let us now find the value of a when b=7 and c = 3

$a = \frac{3(7)}{3}$

$a =\frac{21}{7}$

a = 7

4 0

4 years ago

Verify the identity sin (x + ???? / 2) = cos(x) for all real numbers x by using a graph.

Tamiku [17]

Answer:

See proof and explanation below.

Step-by-step explanation:

First we can proof this analitically first using the following property:

$sin(a+b) = sin(a) cos(b) + sin (b) cos(a)$

If we apply this into our formula we got:

$sin (x + \frac{\pi}{2}) = sin (x) cos(\frac{\pi}{2}) + sin (\frac{\pi}{2}) cos (x)$

And if we simplify we got:

$sin (x + \frac{\pi}{2}) = sin (\frac{\pi}{2}) cos (x)= cos (x)$

And that complete the proof.

If we analyze the graphs sin(x) and cos (x) we see that we have a gap between two graphs of $\pi/2$ as we can see on the figure attached.

When we do the transformation $sin(x +\pi/2)$ we are moving to the left $\pi/2$ units and then would be exactly the cos function.

4 0

3 years ago