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Airida [17]
3 years ago
13

If 4m=-15, then -12m=45 Name the property.​

Mathematics
1 answer:
Ainat [17]3 years ago
8 0

Answer:

Communitave property

Step-by-step explanation:

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Someone PLEASE help me this is insane!
yaroslaw [1]

Answer: I think -131

Step-by-step explanation:

5 0
3 years ago
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a 6ft tall man casts a shadow that is 9ft long. at the same time, a tree nearby casts a 48 ft shadow. how tall is the tree
Jlenok [28]
The tree is 45ft tall
5 0
3 years ago
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Task 1:
OleMash [197]

Answer:

maximum height is 4.058 metres

Time in air = 0.033 second

Step-by-step explanation:

Given that the equation height h

h = -212t^2 + 7t + 4

What is the toy's maximum height?

Let us assume that the equation is a perfect parabola

Time t at Maximum height will be

t = -b/2a

Where b = 7 and a = - 212

t = -7/ - 212 ×2

t = 7/ 424 = 0.0165s

Substitute t in the main equation

h = - 212(7/424)^2 + 7(7/424) + 4

h = - 0.05778 + 0.115567 + 4

h = 4.058 metres

Therefore the maximum height is 4.058 metres

How long is the toy in the air?​

The object will go up and return to the ground.

At ground level, h = 0

-212t^2 + 7t + 4 = 0

212t^2 - 7t - 4 = 0

You can factorize the above equation and pick the positive time t since time can't be negative

Or

Since we have assumed that it's a perfect parabola,

Total time in air = (-b/2a) × 2

Time in air = 0.0165 × 2 = 0.033 s

3 0
3 years ago
Someone helppppppppppppp
mihalych1998 [28]

Answer:

Answer is 18

Step-by-step explanation:

18x3=54

54+54=108

18+2=20

20+20=40

108+40=148

7 0
3 years ago
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1. London Heathrow airport sees on average 191,200 passengers a day. How many passengers is this per minute?
sladkih [1.3K]
191200 / 24 hours in a day = 7966.67 people per hour

60 minutes in 1 hour

7966.67 / 60 = 132.78 people per minute  round to 133 people
4 0
3 years ago
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