-2(2-1)^2-15
-2(1)-15
-2-15
-17 is the answer
An equation is formed of two equal expressions. The solution is (-9,-2).
<h3>What is an equation?</h3>
An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
Given the equation x + 3y = -15 and -3x + 2y = 23,
Step 1- Multiply the equations to make the coefficients match in either the x- or y-variable.
x + 3y = -15
3x + 9y = -45
Step2- After you multiply, add or subtract the two equations.
3x + 9y -3x + 2y = -45 + 23
Step 3- Then solve for the variables that is left.
11y = -22
y = -2
Step4- Substitute the value of y in any one of equations to solve for x.
x + 3(-2) = -15
x - 6 = -15
x = -9
Hence, The solution is (-9,-2).
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Hello from MrBillDoesMath!
Answer:
Not so simple. See discussion below
Discussion:
Consider these two examples:
0<= f < = 1, then (2/3) * f < (2/3) * 1 = 2/3
so the product is less than either of the factors
f = -5, then (2/3)* (-5/1) = -10/3
so the product is actually larger than the factor -5 !
In other words, the general answer depends upon the sign as well as value of the fraction. The problem probably meant that multiplying a positive fraction by a number less than 1 and >= 0 makes the product smaller. But as your see from the above examples, a more fine grained analysis is required for a full answer.
Thank you,
MrB
Answer:
Last option,
<h2>i.e - 30 miles/1hour </h2>
is correct (☑️)
I think the answer is a btw hoped it helped