Answer:
42 - (-24) = 66
Step-by-step explanation:
I'm not sure if this is the form of answer, but if you're subtracting a negative from a negative, you're adding a positive, so this is another way to write the expression.
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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Answer:
the answer to the first one would be: 4/3
the second problem's answer: 20/36, which can be reduced to 5/9
Answer:
x ^2+
y^
2
=
25
Step-by-step explanation:
Square both sides:
r
^2
=
5^
2
Substitute x
^2
+
y^
2 for r
^2
:
x
^2+
y
^2
=
5
^2
Insert the center -0 into the x and y terms:
(
x
−
0
)^
2
+
(
y
−
0
)
^2
=
5
^2
This is the standard form for a circle whose center is (
0,
0
) and the radius is 5.
I think its A
Hope its help for your questions