Answer:
this is a table
y= (a times when y is negative)
X=(X is possitive)
Answer:
7x = 2x + 50
Step-by-step explanation:
Let the number be x.
Seven times the number = 7x
Two times the number = 2x
But from the question,
7 times the number is equal to 50 more than twice the number. This is illustrated below:
7x = 2x + 50
Suppose that Tom has x quarters. Since Tom has 16 coins in all, the rest of the coins, 16 - x of them, must be nickels.
The value of x dimes is 0.25x dollars (since each quarter is 25 cents), and the value of 16 - x dimes is 0.10(16 - x) (since each dime is 10 cents). The total value of these coins, in dollars, is:
0.25x + 0.10(16 - x).
Since these coins are worth $2.50, we have the equation:
0.25x + 0.10(16 - x) = 2.50.
Solving this yields x = 6. Therefore, Tom has 6 quarters and 16-6 = 10 dimes.
Answer:
3.5 inches on the scaled model
Step-by-step explanation:
So using the ratio, 1:90 I thought of two ways to solve this
1) Proportion
2) Equation
Using the proportion method
1:90=x:315
Now cross multiply
315=90x
Now solve and you’ll get 3.5
Equation is just
315/90=X?
Just solve and you’ll also get 3.5