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xeze [42]
2 years ago
13

The longest side of a triangle is 80cm more than the second and 130cm more than the shortest side and its perimeter is 540cm. fi

nd its area
help help
Mathematics
1 answer:
Phoenix [80]2 years ago
5 0

Answer:

Area of triangle1/2b*h Now you can do

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Suppose that the price​ p, in​ dollars, and the number of​ sales, x, of a certain item follow the equation 4 p plus 4 x plus 2 p
andreev551 [17]

Answer:

There is a decrease of 0.75 sales per day

Step-by-step explanation:

Given:-

- The price of item = p

- The number of sales = x

- The relationship between "p" and "x" is given below:

4p+4x+2px=56

Find the rate at which x is changing when x=2, p=6, and dp/dt=1.5 The rate at which x is changing is [ ] sales per day

Take the time derivative (d/dt) of the entire given expression and apply chain rule on d/dt ( 2px ). Since both "p" and "x" are only functions of time "t":

d/dt

4p+4x+2px=56

4*dp/dt + 4*dx/dt + 2*(x*dp/dt + p*dx/dt)=0

Use the given values x=2, p=6, and dp/dt=1.5 to determine dx/dt

4*1.5 + 4*dx/dt + 2*(2*1.5+6*dx/dt)=0

6+4dx/dt + 2*(3+6dx/dt)=0

6+4dx/dt + 6+12dx/dt=0

12+16dx/dt=0

12=-16dx/dt

dx/dt= 12/-16

= -0.75

7 0
3 years ago
Mrs. Kemp had 20 students in her kindergarten class at the beginning of the year.
Kipish [7]

Answer:

15%

Step-by-step explanation:

23 is 115% of 20 therefore, we can know that 23 is a 15% increase from 20.

5 0
3 years ago
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What is the first step you would take to solve the equation shown? 4n = –12 •
True [87]

Answer:

divide by 4

Step-by-step explanation:

-12 divide by 4 = -3

6 0
3 years ago
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HELPPPP ME PWEASEEEEE
Anarel [89]

Step-by-step explanation:

y=-4.5

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8 0
2 years ago
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Consider the equation 9 – 4x = 2x.
ddd [48]

Answer:

9=6x have a great day

Step-by-step explanation:

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3 years ago
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