x+y = 90
x=2y+9
2y+9+y=90
3y=81
y= 27 Emily's age
x= 2*27+9 = 63 Matt's age
Answer:
x = - 4
Step-by-step explanation:
A line perpendicular to the x- axis is a vertical line parallel to the y- axis.
The equation of a vertical line is
x = c
where c is the value of the x- coordinates the line passes through
The line passes through (- 4, - 2) with x- coordinate of - 4, thus
x = - 4 ← equation of perpendicular line
Answer:1.108
Step-by-step explanation:5.45 ÷ 5=1.108
Answer:
A counterexample is sufficient, as long as it is well built and complete.
Step-by-step explanation:
A counterexample is a statement used to show that a previously spoken statement is false.
The counterexample must be direct, clear, simple, well constructed and concise to be effective. If the counterexample has all of these characteristics, only one counterexample is sufficient to show that a conditional statement is flawed.
As an example of this, we can use a square as a counterexample of a statement that states that every rectangle has 4 equal sides.
The value of x is -1.596
<em><u>Solution:</u></em>
<em><u>Given equation is:</u></em>
Let us solve using change of base formula log base b of y equals log y over log b
From given,
Therefore,
Let us simplify the above
Substitute the values
ln 7 = 1.9459101490553132
ln 2 = 0.6931471805599453
Therefore,
Thus solution for x is found