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Slav-nsk [51]
3 years ago
5

Instructions: Select the correct answer.

Mathematics
2 answers:
NNADVOKAT [17]3 years ago
6 0
The formula for the area of a circle (in this case, the disc) is
\pi {r}^{2}
So, we apply the given radius to the formula to give us our answer:
\pi \times  {7.6}^{2}  = 181.4583917
So, your approximate answer is C.
Nataly [62]3 years ago
3 0

Answer:

the answer would be <em>C</em>

Step-by-step explanation:

You might be interested in
Chan receives a bonus from his job. He pays 30% in taxes, gives 30% to charity, and uses another 15% to pay off an old debt. He
charle [14.2K]

Answer:

Chan's Bonus amount was $2400.

Step-by-step explanation:

Let the Total amount receive from bonus be 'x'.

Given:

Chan pays 30% in taxes;

So we can say;

Amount paid in taxes will be equal to 30% of total amount receive

framing in equation form we get;

Amount paid in taxes = \frac{30}{100}x=0.3x = 0.3x

Now Given:

Chan pays 30% in Charity;

So we can say;

Amount paid in charity will be equal to 30% of total amount receive.

framing in equation form we get;

Amount paid in Charity = \frac{30}{100}x=0.3x

Also Given:

Chan pays 30% in old debts;

So we can say;

Amount paid in Old debts will be equal  30% of total amount receive

framing in equation form we get;

Amount paid in Old debts = \frac{15}{100}x=0.15x

Money left with him = $600

Now we can say that Total Amount Receive in bonus will be equal to Amount paid in taxes plus Amount paid in charity plus Amount paid in old debts plus amount left.

framing in equation form we get;

x=0.3x+0.3x+0.15x+600\\\\x= 0.75x +600\\\\x-0.75x=600\\\\0.25x=600\\\\x=\frac{600}{0.25} = \$2400

Hence Chan's Bonus amount was $2400.

7 0
3 years ago
Write the equation of a line with a slope of -1 passing through the point (0,5)
elixir [45]
The\ slope-intercept\ form\ of\ the\ line:y=mx+b\\\\m-the\ slope\\b-y-intercept\\\\m=-1;\ (0;\ 5)\to b=5\\\\Answer:\boxed{y=-x+5}
8 0
3 years ago
Solve the given equation over the interval [0, 2π): cot^2 x − cot x.
AlekseyPX
45^o,  90^o,  225^o,  270^o
\frac{ \pi }{4} ,   \frac{ \pi }{2} ,   \frac{5 \pi }{4} ,   \frac{3 \pi }{2}
8 0
3 years ago
See comment for what I need
Roman55 [17]

Answer:

I already sent u the link from there, even tho, they deleted my question, but yh i set the title as well incase u needed it! Good luck

Step-by-step explanation:

4 0
2 years ago
Light in vacuum is incident on the surface of a slab of transparent material. In the vacuum the beam makes an angle of 43.8° wit
REY [17]

Answer:

Index of refraction of transparent is 1.48

Step-by-step explanation:

Snell's law states that;

n1(sinθ1) = n2(sinθ2)

Where;

n1 and n2 represent the indices of refraction for the two media, and θ1 and θ2 are the angles of incidence and refraction that the ray R makes with the normal.

In this question;

n1 = 1;

θ1 = 43.8°

θ2 = 19.3°

n2 is unknown.

Thus using Snell's law, we have;

1 x sin 43.8 = n2 x sin 19.3

n2 = (sin 43.8)/sin 19.3

n2 = 1.48

4 0
3 years ago
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