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blagie [28]
3 years ago
13

I give brainiest!!! Find the area of that sector. Show work.

Mathematics
2 answers:
Aleksandr [31]3 years ago
6 0
That's a quarter of the circle. So find the area of the circle, and divide by 4 to get the answer.

Circle area = 3.14*13^2 = 530.66
Answer = circle area / 4 = 132.665
Lady bird [3.3K]3 years ago
4 0

Answer:

132.7323 (4 dp)

Step-by-step explanation:

Area of sector formula: θ/360 x πr²

Substitute given values into formula:

90/360 x π x 13²

= 132.7323...

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Find the acute angle formed by line 2y=x+1​
givi [52]

Answer:

26.57°

Step-by-step explanation:

2y = x + 1 \\ y =  \frac{1}{2} x + 1 \\ equating \: it \: with \\ y = mx + b \\ slope \: m =  \frac{1}{2}  \\  \because \:  \tan \theta = m \\  \therefore \: \tan \theta = \frac{1}{2}  = 0.5 \\ \therefore \:  \theta =  {tan}^{ - 1} (0.5) \\\therefore \:   \theta =  {tan}^{ - 1} ( \tan \: 26.565051177 \degree)  \:  \\  \\  \huge \red{ \boxed{\therefore \:   \theta = 26.57 \degree}}

6 0
3 years ago
Help pleazzzzzzzzzzzz
Xelga [282]

Find the ratio of the known sides 10 and 12

12/10 = 1.2

The larger kite is 1.2 times the size of the smaller kite.

Multiply 7 by 1.2:

x - 7 * 1.2

x = 8.4

7 0
4 years ago
If a bag contains 10 red 6 yellow 24 blue and 8 white ballons what is the part tl whole ratio of blue ballons
eduard
10 red, 6 yellow, 24 blue, 8 white....total of 48 balloons

part to whole (blue) = 24/48 reduces to 1/2 or 1:2 or 1 to 2
5 0
3 years ago
Can someone Help?!? I dont get the Key
Shtirlitz [24]
The answer is C, four
because the answer before the line is the ten so the 7 is a 70
the number after the line is a unit, so a 6 is a 6
so the number would be 76
all the numbers before 70 you just have to count
and there is 4, so its C
4 0
4 years ago
Read 2 more answers
Ella bought a 2 bedroom unit 12 years ago for $95 000 and recently sold it for $280 000 (after deducting selling costs).
Pani-rosa [81]

C.P. = $95000

S.P. = $280000

a. Profit

= S.P. - C.P.

= $280000 - $95000

= $185000

b. Let the profit% of C.P. be x.

(x/100) × $95000 = $185000

=> x/100 = $185000/$95000

=> x/100 = 37/19

=> x = (37/19) × 100

=> x = 3700/19

=> x = 194 14/19

So, profit percent of buying price is 194 14/19%.

c. Let the profit% of S.P. be x.

(x/100) × $280000 = $185000

=> x/100 = $185000/$280000

=> x/100 = 37/56

=> x = (37/56) × 100

=> x = 3700/56

=> x = 925/14

=> x = 16 1/14

So, profit percent of selling price is 16 1/14%.

d. Buying price percentage profit sounds better as far as Ella is concerned.

8 0
3 years ago
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