32/80
91/140
the last one 54 doesnt go into 45. 54/100 ?
<span>X+(X+1)=31
</span>x is the first number and the second number should be x+1, since they are consecutive
<u>Answer:</u>
45
<u>Step-by-step explanation:</u>
We are given an equation <em>x - y = 30 </em>which we are to solve for x when the value of y is 15.
To solve this linear equation for x, we just need to substitute the given value of y into the equation to get the value of x.
x - y = 30
x - 15 = 30
x = 30 + 15
x = 45
Therefore, the value of x is 45 when y = 30.
Unfortunately this value is not in the given options but 45 is the correct answer.
Answer:
a = 35, b = 40, c = 17.5
Step-by-step explanation:
The sum of the 3 arcs on the semicircle above the diameter = 180° , that is
65 + 80 + a = 180
145 + a = 180 ( subtract 145 from both sides )
a = 35
The inscribed angles b and c are half the measures of their intercepted arcs
b = 
× 80 = 40
c = × 35 = 17.5
90°=X+3X+10
X + 3X+ 10=90
4X+10=90
90-10 =80
4X=80
80/4=20
X=20
