Mary is 5 years older than bob. If the sum of their ages is 39 write and solve an equation to find ages. Please help me with a c
2 answers:
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Answer:
Step-by-step explanation:
Let's re-write the equations in order to get the variables as separated in independent terms as possible \:
First equation:
Second equation:
Third equation:
Now let's subtract term by term the reduced equation 3 from the reduced equation 1 in order to eliminate the term that contains "y":
Combine this last expression term by term with the reduced equation 2, and solve for "x" :
Now we use this value for "x" back in equation 1 to solve for "y":
And finally we solve for the third unknown "z":
Answer:
Option B
Step-by-step explanation:
Average rate of change of a function 'f' in the interval x = a and x = b is given by,
Average rate of change of change =
Given function is,
g(x) =
We have to calculate the rate of change in the interval [-4, 3],
Average rate of change =
g(3) =
= 2.5 + 1
= 3.5
g(-4) =
= -1 + 1
= 0
Average rate of change =
=
=
Therefore, Option B will be the answer.
The simplified form of the equation is 4.4x + 1.5.
Given
Equation; (1.6x + 7.3) + (–0.6x + 2) – (7.8 – 3.4x)
<h3>Addition</h3>The addition is the process of adding things together.
To simplify the equation follow all the steps given below.
First, open the brackets combine like terms, and simplify.
Then,
The equation in simplified form is;
Hence, the simplified form of the equation is 4.4x + 1.5.
To know more about addition click the link given below.