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77julia77 [94]
2 years ago
9

On a certain hot summer's day, 415 people used the public swimming pool. The

Mathematics
1 answer:
Charra [1.4K]2 years ago
3 0

Answer:

Step-by-step explanation:

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From the airport hanger H, an areoplane A is 18km away on the bearing of 115° while another aeroplane B is 29km away on a bearin
maks197457 [2]

The difference in distance between Aero plane A and B is; 34.67 km

<h3>How to calculate bearing?</h3>

To get the bearing;

∠H = (115 - 90) + (270 - 203)

∠H = 92°

Then, we will use cosine rule to get the distance between both Planes A and B.

d_ab = √(18² + 29² - 2(18 * 29) * cos 92)

d_ab = √(324 + 841 + 36.435)

d_ab = 34.67 km

Read more about bearing at; brainly.com/question/22518031

#SPJ1

6 0
1 year ago
Martha baked 18 cupcakes .
velikii [3]

Answer:

66.67%

Step-by-step explanation:

\frac{12}{18} \times 100\\\\= \frac{1200}{18}\\ \\=66.67\%

7 0
3 years ago
How to solve 2v 14=20
LuckyWell [14K]
2v+14=20
2v=20-14
2v=6
V=3
8 0
3 years ago
one interior angle of a polygon is a right angle and each of the other interior angles is 126°. Calculate the number of sides of
Vikentia [17]

Answer:

There are 7 sides.

Step-by-step explanation:

Let's Use the formula that states that the sum of the angles of an n-sided polygon is given by.

S=(n−2)180

Since we are given that the two angles are right, the angles and each of the remaining angles is 144.

And Therefore, the sum is:

S=90

(n−2)144

(n−2)180

=90

+90

+(n−2)144

⇒(n−2)180

−(n−2)144

=180

⇒(n−2)(180

−144

)=180

⇒(n−2)(36

=180

⇒n−2=

36

180

​⇒n−2=5

⇒n=5+2=7

Hence, the polygon has 7 sides.

6 0
2 years ago
Read 2 more answers
If an item that originally cost $13 is increased to $19, what is the percentage of increase in the item?
Evgesh-ka [11]
Original cost (OC) = $13

New cost (NC) = $19

Percentage increase = \frac{NC - OC}{OC} *100 =  \frac{19 - 13}{13} * 100 =  \frac{6}{13} * 100

= 46.15 %
4 0
3 years ago
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