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belka [17]
2 years ago
13

HELP PLEASE MY WORK HAS TO BE DUE IN A FEW MINUTES PLEASE HELP

Mathematics
1 answer:
PilotLPTM [1.2K]2 years ago
3 0

Given: 2/3 every 30 seconds

If we cut 2/3 in half, we get 1/3. This would also mean we cut the time in half 30 / 2 = 15 seconds

Therefore, 1/3 of the length every 15 seconds.

15 + 15 + 15 = 45 seconds to go the full length of the path

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Let f(x)=x+a/x+b such that f(f(1)=0 & f(2)=-3 then a&b resctivily are.
Yuliya22 [10]

Answer:

The value of a = - 1  ,   And b = \frac{ - 7 }{3}    

Step-by-step explanation:

Given as :

Function f(x) = \frac{(x + a)}{(x + b)}

And f(f(1)) = 0     And f(2) = - 3

Now For , x = 2 , y = - 3

I.e  f(2) = \frac{(2 + a)}{(2 + b)}

or,  - 3 = \frac{(2 + a)}{(2 + b)}

I.e 2 + a = - 6 - 3b

Or, a + 3b = - 8               ....... 1

Again  f(f(1)) = 0

So,  \frac{(1 + a)}{(1 + b)} = 0

Or,  1 + a = 0

∴    a = - 1

So , put htis value of a i n eq 1 , we get value of  b

So , - 1 + 3b = - 8

Or,   3b = - 7

∴       b = \frac{ - 7 }{3}

Hence The value of a = - 1  ,   And b = \frac{ - 7 }{3}    Answer

3 0
3 years ago
The force of gravity on an object varies directly with its mass. The constant of variation due to gravity is 32.2 feet per secon
castortr0y [4]

Answer:

<h2>F = 32.2m</h2>

Step-by-step explanation:

According to newton second law, the force of gravity on an object varies directly with its mass and it is expressed mathematically as Fαm i.e

F = mg where;

F is the force of gravity

m is the mass of the body

g is the proportionality constant known as the acceleration due to gravity.

If the constant of variation due to gravity is 32.2ft/s², the equation that represents F, the force on an object due to gravity according to m, the object’s mass can be gotten by substituting g = 32.2 into the formula above according to the law as shown;

F = m*32.2

F =32.2m

Hence the required equation is F = 32.2m

5 0
3 years ago
Read 2 more answers
Select all the values that make the inequality true​
elena55 [62]

Answer:8

Step-by-step explanation: it cannot be 2, 6, or 5 because they are all less than 7.

7 0
3 years ago
The perimeter of an equilateral triangle is 48 centimeters, what’s the height to the nearest whole number?
Lerok [7]

Answer:

Height = 13.86 cm

Step-by-step explanation:

1. Find the length of each side

48/3 = 16

2. cut the triangle in half.

Base = 8 Hypotenuse = 16

3. use the formula A^2 + B^2 = C^2

(16^2 - 8^2)^(1/2) = 13.86 cm

5 0
3 years ago
Read 2 more answers
Y= 4x + 4 and -0.25x - 2
Yuri [45]

Answer:

.2

Step-by-step explanation:

7 0
2 years ago
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