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3 years ago

WILL MARK

Mathematics

1 answer:

Alex777 [14]3 years ago

5 0

Answer:

about 3.492

Step-by-step explanation:

The distance between points in polar coordinates can be found using the Law of Cosines. For vector magnitudes a and b, and angular difference C, the distance between them (c) can be found from ...

c^2 = a^2 +b^2 -2ab·cos(C)

= 7^2 +5^2 -2(7)(5)cos((217/180π -(-23/36)π)

= 74 -70cos(332°) ≈ 12.1937

c = √12.1937 ≈ 3.492

The distance between the given points is about 3.492 units.

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Which graph represents the function y = -2cos(21x)? helllppp

stealth61 [152]

Answer:

See attached graph

Step-by-step explanation:

The function is given as :

y = -2cos(21x)

7 0

3 years ago

Allan borrows 1870 dollars from his uncle. Two years later, he borrows another 1240 dollars. If his uncle charges him 8 percent

Anna11 [10]

For t=0
Allan borrows--------------------------- > 1870 dollars

for t=6 years
F1 = P*(1 +(r/m))^n
i=r/m
n=m*t---------- >1*6=6
we have
P1=1870
r=8%
m=1
t=6 years
F1 = 1870*(1 +(0.08/1))^6------------------ >2967.45 dollars

for t=2
Allan borrows--------------------------- > 1240 dollars

for t=6 years
F2 = P2*(1 +(r/m))^n
i=r/m
n=m*t---------- >1*4=4
we have
P2=1240
r=8%
m=1
t=4 years------------> (6-2)=4 years
F2 = 1240*(1 +(0.08/1))^4------------------ >1687 dollars

F1+F2=2967.45+1687=4654.45 dollars
the answer is 4654.45 dollars

3 0

4 years ago

BRAINLIEST

fomenos

The answer is C (Length=32 feet and Width=24 feet)

5 0

3 years ago

The Hurry-Mart convenient store is re-stocking their shelves. They always stock the m&m to Hershey bars at a ratio of 10 to

castortr0y [4]

Answer:

12 Hershey bars

Step-by-step explanation:

if its 10 to 8 and you have 15 m&m then you would have to do the 10 which you would have to put 8 then 5 is half of 10 so you would just half 8 which is 4 so 8+4+12. 12 Hershey bars needed to restock the shelf.

8 0

3 years ago

In a population of bats living in a certain region, 30 percent have a wingspan greater than 10 inches. In a random sample of 80

Kisachek [45]

Answer:

The correct option is (e).

Step-by-step explanation:

In this case we need to determine whether there is any difference between the proportion of bats with a wingspan greater than 10 inches living outside the region from that of the bats living in the region.

The hypothesis can be defined as follows:

H₀: There is no difference between the proportion of bats with a wingspan greater than 10 inches living outside the region and of the bats living in the region, i.e. p - p₀ = 0.

Hₐ: There is a difference between the proportion of bats with a wingspan greater than 10 inches living outside the region and of the bats living in the region, i.e. p - p₀ ≠ 0.

The information provided is:

n = 80

X = 20

p₀ = 0.30

A z-test for single proportion will be used to perform the analysis.

Compute the sample proportion of bats living outside of the region having a wingspan greater than 10 inches as follows:

$p=\frac{X}{n}=\frac{20}{80}=0.25$