80+ 80= 160 miles
160 miles/ 7 hours= 22.857 miles per hour
Let's check the answer
Start with equation (1). Plug in (x,y) = (-10,-1)
x + 5y = -15
-10 + 5y = -15 ... replace x with -10
-10 + 5(-1) = -15 ... replace y with -1
-10 - 5 = -15
-15 = -15 ... true equation
So we've confirmed one equation so far. Let's check the other equation
--------------------
Start with equation (2). Plug in (x,y) = (-10,-1)
y = (1/5)*x + 1
y = (1/5)*(-10) + 1 ... replace x with -10
-1 = (1/5)*(-10) + 1 ... replace y with -1
-1 = -2 + 1
-1 = -1
Since both equations are true when (x,y) = (-10,-1), this confirms the answer. Nice work on getting the correct answer.
Visually we can see the two lines crossing at (-10,-1). See the attached image. Note: 1/5 = 0.2 so the second equation can be written as y = 0.2x+1
Hi there! The answer is 29.
y = 4x – 11
The input of the function is 10, so we should substitute 10 on the place of x.
y = 4(10) - 11
Multiply first.
y = 40 - 11
Subtract.
y = 29
Therefore the output is 29.
~ Hope this helps you!
Answer:
b
Step-by-step explanation:
Answer:
The expressions a(8x+7) and 4x + 3.5 are equivalent
Therefore, according to the above problem the equation is :---
By comparing the term, we get
and,
<h3>The value of "a" is <u>1/2</u>.</h3>