The combined average weight of an okapi and a llama is 450 kilograms. The average weight of 3 llamas is 190 kilograms more than
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Answer:
David find <u>8</u> quarters.
Step-by-step explanation:
Given:
David was in need for some money so he decided to clean out the water fountain at the mall he found 20 nickels and quarters.
The collection of nickels and quarters totaled to 2.6.
Now, to find the quarters David find.
Let the number of nickels be
And the number of quarters be
Thus, the number of nickels and quarters he found:
⇒ .........( 1 )
The totaled of nickels and quarters:
(As 1 nickel=$0.05 and 1 quarter=$0.25)
Now, putting the equation ( 1 ) in the place of we get:
⇒
⇒
<em>Subtracting both sides by 1 we get:</em>
⇒
<em>Dividing both sides by 0.20 we get:</em>
⇒
So, the quarters = 8.
Therefore, David find 8 quarters.
Make an x and y table, and pick any values to plug in for x in the equation.
I will use the numbers from -2 to 2
Now plug in the values you picked for x into the equation to find its y-value
x = -2
y = 3x - 1 Plug in -2 for x
y = 3(-2) - 1
y = -6 - 1
y = -7
x = -1
y = 3x - 1
y = 3(-1) - 1
y = -3 - 1
y = -4
Do the same for the rest of the numbers, and graph each point and draw a line connecting them.
