All categories

2 years ago

Plz help!!! I have a bad grade as it is and i don't want to drop it

Mathematics

1 answer:

Travka [436]2 years ago

5 0

$Answer: \\ The\: area\: of\: the\: shaded\: region\\ =Area\: of\: square - Area\: of\: circle\\ = {28}^{2} - 3.14 \times {14}^{2} = 784 - 615.44 = 168.56 \: {in}^{2}$

You might be interested in

Suppose there is a bag containing 20 white marbles (Upper W), 20 red marbles (Upper R), 20 yellow marbles (Upper Y), and 2

lina2011 [118]

Answer:

WW WI WB WR IW II IB IR BW BI BB BR RW RI RB RR

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

A rescue helicopter flew from its home base for 35 kilometers on a course of 330 degrees to pick up an accident victim. It then

artcher [175]

I've drawn a triangle to represent the journey (see attached.

The angle from Home to Victim to Hospital is:

a = $90 - (360 - 330) = 90- 30 = 60^o$

Using the cos rule, we can solve for the length x:

$a^2 = b^2 +c^2 - 2bccosA
\\x^2 = 35^2+25^2-2(35)(25)cos60
\\x^2 = 1850 - 875
\\x^2 = 975
\\x = \sqrt{975}
\\x = 31.2249...$

Using the cos rule, we can solve for angle b:

$a^2 = b^2 +c^2 - 2bccosA
\\35^2 = 31.22...^2+25^2-2(31.22...)(25)cosb
\\1225 = 975 + 625 - 1561.249...cosb
\\-375 = -1561.249...cosb
\\b = cos^{-1}( \frac{-375}{-1561.249...}) 
\\b = 76.1...$

So the bearing the helicopter has to travel is:

270 - 76.1 = <u>193.9 degrees (1 dp)</u>

And the distance it travels is <u>31.2 km (1 dp)</u>

5 0

3 years ago

Please can someone help me. I’m giving POINTS!! Solve for X

KATRIN_1 [288]

Answer:

Step-by-step explanation:

By inscribed angle theorem

$(15x-23)\degree = \frac{1}{2}[360\degree-(91+135)\degree]\\(15x-23)\degree = \frac{1}{2}[360\degree-226\degree]\\(15x-23)\degree = \frac{1}{2}[134\degree]\\(15x-23)\degree = 67\degree\\15x-23 = 67\\15x = 67+23\\15x = 90\\x= \frac{90}{15}\\x=6$

4 0

2 years ago

In how many ways can 13 people be divided into four groups with 3, 6, 2 and 2 people respectively?

OleMash [197]

Answer:

Total combination = 180,180

Step-by-step explanation:

It is a combination based problem.

So,

Total people = 13

Group = 3,6,2,2

So,

For 6 people

13C6= 1,716

For 3 people

7C3 = 35

For 2 group of 2 people

(4C2)/2 = 3

Total combination = 1,716 × 35 × 3

Total combination = 180,180

8 0

3 years ago

Please help me with this question please help me rn

Darya [45]

Answer:

Check the explanation for the answer please. Thank you!

Step-by-step explanation:

a. Nina is correct, because the formula P = 2l + 2w would be a correct perimeter formula. Alexander, however, is wrong, because the formula P = 2(l + w) would be an incorrect perimeter formula.

b. P = L + L + W + W would be another correct perimeter formula, as it is the same thing to P = 2l + 2w.

c. One reason the paint was empty after their calculations were correct would be because of their argument before determining the perimeter amount of paint that they need. Another reason the paint was empty after their calculations were correct was because of the fact that they probably don't know how to perfectly do the paint within the perimeter. [I might be wrong about this, but it should be an opinion question anyway.] DO NOT WRITE/TYPE THE PARENTHESIS INTO THIS PROBLEM!!!

Hope this helped!

7 0

3 years ago