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Anton [14]
3 years ago
9

I need help with this bc i cant move on to my next test.

Mathematics
1 answer:
Gre4nikov [31]3 years ago
4 0
The answer is 10 so good job
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Please let me know ASAP
aksik [14]

Answer:

∠ BAC = 80°

Step-by-step explanation:

The sum of the interior angles of quadrilateral ACDB = 360°

DB and DC are tangents to the circle, thus

∠ DBA = ∠ ACD = 90° ( angle between tangent/ circle at point of contact )

Thus

∠ BAC + 90° + 90° + 100° = 360°

∠ BAC + 280° = 360° ( subtract 280° from both sides )

∠ BAC = 80°

4 0
3 years ago
Read 2 more answers
How long will the spring be if a 2 pound weight is hung on it? Will the length double if you double the weight?
mars1129 [50]
Logically if you double weight on something it means that you are adding the exact same weight as the first object to the same thing to make it twice the weight as the original, so yes... the weight will double if the length is doubled
8 0
3 years ago
Read 2 more answers
Biologists conducted a study to investigate the flying velocity of mosquitoes both before and after feeding. The following scatt
Lesechka [4]

Answer:

It represents a mosquito that flew very fast after feeding relative to all other mosquitoes.

Step-by-step explanation:

The point is unusual because the velocity of the mosquito is substantially greater than all other velocities and is probably an outlier.

4 0
3 years ago
36 is _______% less than 60?
katovenus [111]
60-36=24
x/100∗60=24
x=40%
6 0
3 years ago
"A state legislator wishes to survey residents of her district to see what proportion of the registered voters are aware of her
aliya0001 [1]

Answer:

The correct answer to the following question will be "384".

Step-by-step explanation:

We are having,

P(-0.05

On solving, we get

⇒  P(\frac{-0.05}{\sqrt{\frac{pq}{n}}}

⇒  \frac{0.05}{\sqrt{\frac{p(1-p)}{n}}} =1.96

On applying cross-multiplication, we get

⇒  0.05^2=1.96^2\times \frac{P(1-p)}{n}

⇒  0.05^2n=1.96^2-1.96^2p^2

⇒  1.96^2p^2-1.96^2p+0.05^2n=0...(equation 1)

When "p" seems to be the population proportion, (equation 1) approach, which is special

∴ b^2-4ac=0

On putting the values in the above expression, we get

⇒  (1.96)^4-4\times 0.05^2\times 1.96^2n=0

⇒  1.98^2-4\times 0.05^2n=0

⇒  n=\frac{1.96^2}{4\times 0.05^2}

⇒  n=384.16=384

7 0
3 years ago
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