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Deffense [45]
2 years ago
11

Help me asappppp please

Mathematics
1 answer:
katen-ka-za [31]2 years ago
6 0

Answer:

lol wow you dont know that lololololololololol

Step-by-step explanation:

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What is the exact area and arc length of these sectors? Please helppp
Karolina [17]

<u>Answers with step-by-step explanation:</u>

1. Area of sector 1 = \frac{90}{360} \times \pi \times 12^2 = 36\pi

2. Area of sector 2 = \frac{45}{360} \times \pi \times 19^2 = \frac{2527}{8} \pi

3. Area of sector 3 = \frac{270}{360} \times \pi \times 15^2 = \frac{675}{4} \pi

4. Area of sector 4 = \frac{270}{360} \times \pi \times 6^2 = 27 \pi

5. Arc length of sector 1 = \frac{90}{360} \times 2 \times \pi \times 12 = 6\pi

6. Arc length of sector 2 = \frac{315}{360} \times 2 \times \pi \times 19 = \frac{133}{4} \pi

7. Arc length of sector 3 = \frac{270}{360} \times 2 \times \pi \times 15 = \frac{45}{2}\pi

8. Arc length of sector 4 = \frac{270}{360} \times 2 \times \pi \times 6 = 9\pi

4 0
3 years ago
Assume that a population of 50 individuals has the following numbers of genotypes for a gene with two alleles, B and b: BB = 30,
Andreas93 [3]

Answer:

the frequency of allele B is 0.7 and allele b is 0.3 in population’s gene pool.

Step-by-step explanation:

Allele frequency is how often an allele occurs in a gene pool relative to the other alleles for that gene

<u>Genotype</u>    <u> No. of Individuals</u><u> </u>     <u>No. of Allele </u><u>B</u>   <u>No. of Allele</u><u> b </u>                      

BB                    30                            30*2 =60                   30*0 =0

Bb                     10                            10*1 =10                       10*1=10

bb                     10                             10 *0 =0                      10*2=20

Total                 50                              70                                 30

Total no. of alleles = 70+30 =100

The frequency of allele B :\frac{\text{number of B alleles}}{\text{total number of alleles}}

:\frac{70}{100}

:0.7

The frequency of allele b :\frac{\text{number of b alleles}}{\text{total number of alleles}}

:\frac{30}{100}

:0.3

Hence the frequency of allele B is 0.7 and allele b is 0.3 in population’s gene pool.

6 0
3 years ago
a man casts a 3 feet long shadow. if the suns rays strike the ground 62°, what is the height of the man?
Romashka [77]

Answer:

h = 3*tan(62) where h is the height

Step-by-step explanation:

You basically have a right triangle.  the standing man is the vertical line, the shadow is the horizontal line and the 62 degrees is the angle betweenthe horizontal line and the hypotenuse.

So, relative to the angle we have the adjacent angle and opposite.  What uses those?  Tangent.  tan(x) = opp / adj

tan(62) = h/3

h = 3*tan(62) where h is the height

7 0
2 years ago
How many different outcomes are possible when three coins are flipped at the same time?​
Mice21 [21]

Answer:

<u>8</u>

Step-by-step explanation:

Now consider an experiment of tossing three coins simultaneously. The possible outcomes will be HHH, TTT, HTT, THT, TTH, THH, HTH, HHT. So the total number of outcomes is 23 = <u>8</u>.

5 0
2 years ago
Read 2 more answers
Suppose that you decide to participate in a charity walkathon to raise money for your cause. Some people decide to donate a fixe
natta225 [31]

Answer:

Step-by-step explanation:

d(3)=1.5x3+25=29.5

6 0
3 years ago
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