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frozen [14]
2 years ago
12

PLEASE HELP WILL GIVE BRAINLIEST

Mathematics
1 answer:
Dovator [93]2 years ago
8 0
The second one is right
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Please help me. Noura is redecorating her house. She needs to work out the area of the wall around her triangular window in orde
Vinvika [58]

Answer:

a. 277.3 m²

b. $307.86

Step-by-step explanation:

a. Area of the wall to be painted = area of rectangle - area of triangle

= L × W + ½×a×b×sin θ

L = 17 m

W = 14 m

a = 8.7 m

b = 9.5 m

θ = 72°

Plug in the values into the equation

Area of the wall = (17×14) + (½*8.7×9.5×sin 72)

Area of the wall = 238 + 39.3024105

Area of the wall to paint ≈ 277.3 m²

b. 20 liters of paint of 1 container cost $21.99

If 1 liter of paint covers 1m², therefore,

277.3 m² will need = 277.3 × 1 = 277.3 liters of paint.

20 liters = 1 container of paint

277.3 liters = 277.3/20 = 13.865 ≈ 14 containers

1 container = $21.99

14 containers = 21.99 × 14 = $307.86

8 0
2 years ago
Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels at a rate of 65
koban [17]

Answer:

time = 1 hour 24 minutes

Step-by-step explanation:

Given that:

Eastbound train travels at a rate of 65 miles per hour

Westbound train travels at a rate of 85 miles per hour

So speed = 65 + 85 = 150 miles per hour

Total distance = 210 miles

We have to find the time

We know that

Distance = time * speed

OR

time = distance / speed

time = 210/150

time = 1.4 hours

Or it can be written as:

time = 1 hour 24 minutes

i hope it will help you!

6 0
3 years ago
Which polynomial are in standard form
VMariaS [17]

Answer:

A and C

Step-by-step explanation:

Exponent from biggest to lowest

6 0
2 years ago
Can someone help me with this?
uysha [10]

Step-by-step explanation:

Volume of a cylinder : πr^2*height.

Volume : 150cm^3

height : 7.2m

π =3.14

150 = 3.14*r*r*7.2

150=22.608*r*r

r^2= 150/22.608

=150/23cm^2

r=√6.5

r=2.569cm

r=2.6cm

8 0
2 years ago
Find the next term for the given sequence.52, 45, 38, 31
valkas [14]
The answer is 24. To get to each term, we can see that the value is decreasing by 7. So 31 - 7 = 24
4 0
3 years ago
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