Let A be attendance, t the temperature and n the number of days. Then,
A
A=k
Where k is a constant of proportionality;
If A=3200, T=88 and n=8, then k,
3200=
3200=11k
k=
Rewriting the equation and replacing the value of k,
A=
When t=92 and n=12
The A=
A=
A= 2231
For 46 minutes you can use the computer for $23.
Given that, you can rent time on computers at the local copy centre for a $7 setup charge and an additional $1.75 for every 5 minutes.
We need to find how much time can be rented for $23.
<h3>What is a linear equation?</h3>
A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation. The standard form of a linear equation in one variable is of the form Ax + B = 0. Here, x is a variable, A is a coefficient and B is constant.
Now, every minute charge=1.75/5=$0.35
Let time used be t, so we can write an equation as
7+0.35t=23
Solve the equation for t.
That is, 0.35t=16
⇒t=16/0.35=45.714
⇒t=45.714≈46 minutes
Therefore, for 46 minutes you can use the computer for $23.
To learn more about the linear equation visit:
brainly.com/question/14362668.
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Answer:
x = -6
Step-by-step explanation:
y = -x equation 1
x + 6y = 30 equation 2
using equation 1 in equation 2 we have:
x + 6(-x) = 30
x - 6x =30
-5x = 30
x= -30/5
x= -6
First take and get the slope of the line. If the slope is equal to an option then that's your answer. Hope I helped!
The roots are 1 +√7 and 1 -√7.
<h3>What is Quadratic equation?</h3>
A quadratic equation in the variable x is an equation of the form ax² + bx + c= 0, where a, b, c are real numbers, a≠0
Given equation:
y= x²+2x-6
First,
Half the coefficient of x and add and subtract the square of (b/2)
y= x²+2x-6+(1)²-(1)²
y= x²+2x+(1)² -6 -(1)²
y= (x+1)² -7
Now, equate y=0
(x+1)² -7 =0
(x+1)² = 7
x+1= ±√7
x=1 ±√7
Hence, the roots are 1 +√7 and 1 -√7.
Learn more about quadratic equation here:
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