Elga's age = x
Alvin's age = x + 7
x + x + 7 = 97.
Simplify the left side of the equation
2x + 7 = 97.
Subtract 7 from each side
2x = 90.
Divide each side by 2
x = 45
Since x is equal to Elga's age, Elga is 45 years old
Answer:
it is -4
Step-by-step explanation:
-3 * 2 = -6 + 2 = -4
Answer:
4 cm.
Step-by-step explanation:
Use 5 as an estimate for the radius, 100 for the volume and 3 for π.
100 = 1/3 * 3 * 5^2 * h
h = 100 / 25
= 4 cm (answer)
Answer:
P=33/43 or p=0.76744...
Step-by-step explanation:
A- two acute angles can be complementary
Complementary angles add to 90°, and obtuse angles are defined as being over 90°, so no answer with obtuse would work.
A right angle is 90° exactly, and 2 would add to 180°, so C cannot be right.