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OleMash [197]
3 years ago
7

Round this population figure to two

Mathematics
1 answer:
Vaselesa [24]3 years ago
6 0
1) 190,000,000 people
2) 1.86 x 10^8
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Use Heron's Area Formula to find the area of the triangle. (Round your answer to two decimal places.)
aniked [119]

Answer:

  • 1549.24

Step-by-step explanation:

<u>Heron's Area formula:</u>

  • A = \sqrt{s(s - a)(s - b)(s - c)}, where s is semi-perimeter
  • s = 1/2(a + b + c)

We are given two sides and the included angle.

<u>Use the law of cosines to find the missing side:</u>

  • a² = b² + c² - 2bccos A
  • a² = 77² + 41² - 2*77*41*cos 79
  • a² = 6405
  • a = 80 (rounded)

<u>Now find the value of s:</u>

  • s = 1/2(80 + 77 + 41) = 99

<u>Find the area:</u>

  • A = \sqrt{99(99 - 80)(99 - 77)(99 - 41)} = \sqrt{2400156} = 1549.24
6 0
3 years ago
Read 2 more answers
Answer The Expression. 55−63+20 1/4 ÷ 43 1/4
Diano4ka-milaya [45]

Answer:

-7.53179190751

Step-by-step explanation:

(55-63)+((20 1/4)/(43 1/4))=

-8+0.46820809248= -7.53179190751

5 0
3 years ago
When one increases the confidence level say from 0.90 to 0.95?
nignag [31]
False. 0 to 100 when your confidence goes up
7 0
4 years ago
Alyssa and her father are going to paint the house this summer.
nekit [7.7K]

Answer:

The formula to determine the area covered by one can of paint is p = \frac{w}{6}

Step-by-step explanation:

The formula that describes this scenario ,  6=w/p

where

w is the total area of the walls

p is  area covered by a can of paint

The formula says that to paint the total area we need  6 can of paints

Thus to with the one paint can the area that can be covered is

\bold{6=\frac{\text{total area of the walls}}{\text{area covered by a can of paint}}}

\bold{{\text{area covered by a can of paint}}=\frac{\text{total area of the walls}}{6}}

p = \frac{w}{6}

3 0
4 years ago
If f(x)=3x+2, what is f(3)-7
sergey [27]

Answer:

\orange{ \bold{f(3) - 7 = 4}}

Step-by-step explanation:

f(x) = 3x + 2 \\  \\ plug \: x = 3 \\  \\ f(3) = 3(3) + 2 = 9 + 2 \\  \\ f(3) = 11 \\  \\  f(3) - 7 = 11  - 7\\  \\    \purple{ \bold{f(3) - 7 = 4}}\\  \\

8 0
3 years ago
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