Do the rules described result in a fair situation?

What is the first step needed to solve 4 over 7 multiplied by x minus 5 equals negative 13 ? (1 point) Subtract 13 from both sid

muminat

It is add five two both sides.

3 0

3 years ago

Can someone help me ASAP???

antiseptic1488 [7]

Answer: The last member has to finish 11 more laps to complete 50 total laps

Step-by-step explanation:

$\frac{4}{10}$ of 50 = 20

2nd swimmer 8

22% of 50 = + 11

39 laps

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50 - 39 = 11 laps  (4th and last swimmer)

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P.S. I think this answer is late now

5 0

3 years ago

A study on the population of wolves is being done in a county to determine how the number of wolves has changed over time. The p

brilliants [131]

Domain is the years from 2000 through 2020 inclusive
at 2000, t = 2000-2009 = -9 
at 2020, t = 2020-2009 = 11 
Domain: -9 ≤ t ≤ 11 

P(t) = 80(0.98)t 
Since population models are almost always exponential, I'll assume you meant the "t" to be an exponent and the model should be: 
P(t) = 80•0.98^t = 80 → t = 0 
The population is 80 at t = 0. The year corresponding to t = 0 is 2009

3 0

3 years ago

Determine whether the statement is true or false. If it is true, explain why. If it is false, explain why or give an example tha

julia-pushkina [17]

Answer:

We can say that is FALSE because the inhomogeneous sytem $Ax =b$ can present an unique solution $x = A^{-1}b$ if $|A|\neq 0$ , so this is a good counter example on which we have a vctor that is not the trivial solution and we don't have an infinite number of solution.

Step-by-step explanation:

For this case we can use the following definition:

Let $A x = b$ a linear system, this system is called homogeneous if $b =0$ and in other case is called inhomogeneous.

So then for the statement "The inhomogeneous system of equations Ax=b, where $b\neq0$ , has either the trivial solution or an infinite number of the solutions."

We can say that is FALSE because the inhomogeneous sytem $Ax =b$ can present an unique solution $x = A^{-1}b$ if $|A|\neq 0$ , so this is a good counter example on which we have a vctor that is not the trivial solution and we don't have an infinite number of solution.

7 0

3 years ago

The area of a rectangle is 77 m2 , and the length of the rectangle is 3 m more than twice the width. find the dimensions of the

Veronika [31]

Answer:

Step-by-step explanation:

Let x = width in ft

y= length in ft

Given, y = 3+2x ----(1)

Area = xy = 77 ft2

Using (1) to replace y

3x+2x2=77

2x2+3x-77=0

Solve this quadratic equation, a=2, b=3, c=-77

x=(-3(+or-)sqrt(32-4*2*(-77)))/(2*2)

= (-3 (+ or -) sqrt(9+616))/4

= (-3 (+ or -) sqrt(625))/4

= (-3 (+ or -) 25)/4

x = (-3+25)/4 or x = (-3-25)/4

= 22/4 = -28/4

x = 5.5 x = -7

x is the length and can't be negative. so, proceed with x= 5.5

xy = 77

y = 77/5.5 = 14

Dimensions of the rectangle are 5.5ft and 14 ft

(Check: 2* 5.5 + 3 = 11+3 = 14)

6 0

4 years ago