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2 years ago

P= a + b + c; P = 28, a =5, b = 11 (Perimeter of a triangle)

Mathematics

2 answers:

aksik [14]2 years ago

8 0

Answer:

c=12

Step-by-step explanation:

P=a+b+c

28=5+11+c ; combine 5 and 11.

28=16+c ; subtract 16 from each side to get c

28-16=12

ollegr [7]2 years ago

4 0

Answer:

c = 12.

Step-by-step explanation:

Fill in what you know. 28 = 5 + 11 + c. Add 5 and 11 together. 28 = 16 + c. Then subtract 16 from both sides 28 - 16 = 16 - 16 +c. Then the number you have left is your answer.

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EVALUATE: 10x – 2y3 (if x = 5 and y = 2)

Archy [21]

Answer:

10*(5) - 2*(2)^3

= 50 - 2*8

= 50 - 16

=34

8 0

2 years ago

Read 2 more answers

The population of rabbits on an island is growing exponentially. In the year 1994, the population of rabbits was 9600, and by 20

drek231 [11]

Answer:

49243

Step-by-step explanation:

Given that the population of rabbits on an island is growing exponentially.

Let the population, $P=P_0e^{bt}$

where, $P_0$ and b are constants, t=(Current year -1994) is the time in years from 1994.

In 1994, t=0, the population of rabbit, P=9600, so

$9600=P_0e^{b\times 0}$

So, $P_0=9600$

and in 2000, t=2000-1994=6 years and population of the rabbit, P=18400

$18400=9600 \times e^{b\times 6} \\\\\frac{18400}{9600}=e^{b\times 6} \\\\$

$\ln(23/12}=6b \\\\$

$b = \frac{\ln{1.92}}{6} \\\\$

b=0.109

On putting the value of P_0 and b, the population of the rabbit after t years from 1994 is

$P=9600 \times e^{0.109\times t}$

In 2009, t= 2009-1994=15 years,

So, the population of the rabbit in 2009

$P=9600 \times e^{0.109\times 15}=49243$

Hence, the population of the rabbit in 2009 is 49243.

7 0

3 years ago

In the multiplication sentence below, which number is the product?

emmasim [6.3K]

Answer:

C. 90

Step-by-step explanation:

The numbers being multiplied are "factors." The result of multiplication is a "product." In this problem, the product is 90.

8 0

2 years ago

The solution to a system of equations is written as an ordered pair, such as (x, y). Solve the following system.

klio [65]

Do (1/2 + b I) for the answer

7 0

3 years ago

Solve the system<br> y= 3x+7<br> y=2x-3

notka56 [123]

Answer:(-10,-23)

Step-by-step explanation:

Okay....the easiest way to answer this would be either elimination or graphing. However, you could also use substitution.

Right now, I'll show how to use it by elimination.

First this is to convert both equations to standard form (x+y=__)

What we'll do for the first one is add 3x to each side. We end up with this:

-3x+y=7

Then subtract 2x from the other one. Ending up with:

-2x+y=-3

Now, we eliminate the y by subtracting.

-3x+y=7

(-) -2x+y=-3

___________

-x =10

x = -10

Now, plug in the x to one of the equations.

y=2(-10)-3

y=-20-3

y=-23

Make sure to check your answer by plugging both into the equations.

X=-10

Y=-23

5 0

2 years ago