Answer:
5%
Step-by-step explanation:
38/40 = x/100
38*100 = 3800
3800/40 = 95
95/100 = 38/40
38 is 95% of 40 therefore the change is 5%
Answer:
p : q : r = 10 : 4 : 3
Step-by-step explanation:
Expressing the ratio in fractional form
= 
( cross- multiply )
4r = 3q ( divide both sides by 4 )
r = 
q = × 2 = 
Then
p : q : r
= 5 : 2 : ( multiply all parts by 2 )
= 10 : 4 : 3
Answer:
Angle DCB is Equal to 78
Step-by-step explanation:
4x+2 + 3x+3 =180
7x +5=180
7x=175
x=25.
Then put the x in the 3x+3
3(25) +3 = 78
so DCB = 78
Answer:
x<4
Step-by-step explanation:
<h3>Triangle 1 :</h3>
Classify by angle = <u>obtuse</u> (one angle in the triangle is obtuse)
Classify by sides = <u>isosceles</u> (has two equivalent sides)
<h3>Triangle 2 :</h3>
Classify by angles = <u>right</u> (an angle in the triangle is equal to 90°)
Classify by sides = <u>scalene</u> (none of the sides in this triangle is equal)
