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sleet_krkn [62]
3 years ago
9

(0- (-3))×(-1+5)÷(2- (-2))due today pls answer ​

Mathematics
1 answer:
Stella [2.4K]3 years ago
5 0

Answer:

2 days late

Step-by-step explanation:

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A circle has a circumference of 615.44 units. What is the radius of the circle?
Mama L [17]

Answer:

The radius of the circle is r=98\ units

Step-by-step explanation:

we know that

The circumference of a circle is equal to

C=2\pi r

we have

C=615.44\ units

assume

\pi=3.14

substitute and solve for r

615.44=2(3.14)r

r=615.44/6.28

r=98\ units

7 0
3 years ago
Read 2 more answers
I need help fast plss
Marysya12 [62]

Answer:

a = 1√6

b = -2

Step-by-step explanation:

Hello,

To solve this trigonometric problem, we need to convert this values into fractions

a).

Sin45° = 1/√2

cos30° = √3/2

Sin60° = √3/2

Sin45° / (cos30° + sin60°) = [(1/√2) ÷ (√3/2 + √3/2)]

(1/√2) ÷ (√3/2 + √3/2)

Add √3/2 + √3/2

1/√2 ÷ 2√3/2

1/√2 × 2/2√3

2/2√(2×3)

2/2√6

1/√6

b

Cos 180° = -1

Sin150° = ½

Tan135° = -1

2cos180° - 2sin150° - tan135°

(2 × -1) - (2×½) - (-1)

-2 - 1 + 1 = -2

3 0
3 years ago
-5/4 divided by 2 3/5
Alecsey [184]

-5/4 ÷ 2 3/5

Let's turn 2 3/5 into a complete fraction so multiply bottom by two and add it to the top. Take the answer and put it over the original bottom. SO: 13/5

Now KEEP CHANGE FLIP

keep -5/4

change sign to ×

flip 13/5 to 5/13

Thus: -5/4 × 5/13

Simply, multiply

-25/52

Done, hope that helps :)

5 0
3 years ago
Read 2 more answers
A statistician finds that the population P of a small developing country has been increasing at a rate of 3.65% annually. In 200
iren [92.7K]

Answer:

15.035 years

Step-by-step explanation:

The exponential function to calculate population growth is

P(t) = Poe^kt

P(t) = Population size after t years = 3.6 million

Po = Initial population size = 2.1 million

k = growth rate = 3.65% = 0.0365

t = time in years = ???

Hence:

3600000 = 2100000 × e ^0.0365t

Divide both sides by 2100000

3600000/2100000 = e^0.0365t

1.7142857143 = e^0.0365t

Find the log of both sides

Log 1.7142857143 = log (e^0.0365t)

Log 1.7142857143 /Log 0.0365 = t

t = 15.035 years

5 0
3 years ago
3 sides of the triangle are distinct perfect squares. What is the smallest possible perimeter of the triangle?
alisha [4.7K]

Answer:

77

Step-by-step explanation:

At first, you would probably think that the side lengths are 1², 2², 3² = 1, 4 and 9 but these side lengths don't form a triangle. The Triangle Inequality states that the sum of the two shortest side lengths must be greater than the largest side length, and since 1 + 4 > 9 is a false statement, it's not a triangle. Let's try 2², 3², 4² = 4, 9, 16. 4 + 9 > 16 is also false so that doesn't work. 3², 4², 5² = 9, 16, 25 but since 9 + 16 > 25 is false (25 isn't greater than 25), that doesn't work either. 4², 5², 6² = 16, 25, 36 and since 16 + 25 > 36 is true, this is our triangle which means that the perimeter is 16 + 25 + 36 = 77.

3 0
4 years ago
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