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3 years ago

What are the angles for all of these i rlly need to know asap

Mathematics

1 answer:

vesna_86 [32]3 years ago

8 0

Answer:

2. 40

3. 40

4. 140

5. 140

6. 40

7. 40

8. 140

Step-by-step explanation:

angles 2 (and 3) are supplementary angles of the given angle, this means that the given angle and either one of the two angles i just mentioned should add up to 180

angle 4 is vertical to the given, so this means that they are congruent

angle 8 corresponds to 4 and 5 corresponds to the given, so they are all congruent

angles 7 and 6 correspond to 3 and 2, so they are also 40

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Answer:

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Step-by-step explanation:

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3 years ago

On Novermber 27, 1993, the New York times reported that wildlife biologists have found a direct ink between the increase in the

Korolek [52]

Answer:

a. 1 263 888

b. 130 701

c. 72 years

Step-by-step explanation:

a. The differential equation applies here.

Let the quantity increase for a certain time be given by Q(t)

Every unity of time, the quantity increases by $1+\frac{r}{100}$ so that after the time t, the quantity remaining will be given by:

$Q(t) = (1+ \frac{r}{100} )^{t}$

In a similar manner, the quantity R(t) decreases at a rate given by the following expression:

$1-\frac{r}{100}$ and after the time , t the quantity of R remaining will be given by:

$R(t) = (1-\frac{r}{100} )^{t}$

a. To find the population of humans in 1953

$Q(t) = (1+ \frac{r}{100} )^{t}$

1993 - 1953 = 40 years = t

Q(40) = Q× $1.06^{40}$

Q = 1 263 888.44

≈ 1 263 888

b. For bear population in 1993:

$R(t) = (1-\frac{r}{100} )^{t}$

t = 40

R(40) = $b 0.94^{40} = 11 000$

b = 130 700. 889

≈130 701

c. time taken for black bear population number less than 100 is given by:

130 = 11000× $0.94^{t}$

solving using natural logarithms gives t = 72.72666

= 72 years Ans

8 0

3 years ago