Answer:
88 problems
Step-by-step explanation:
98% of the total is 86 problems answered correctly.
(0.98)x = 86
x = (86/0.98)
x = 87.551
We need a whole number, so round to 88 problems
Answer:
A. x
C. x – 5
D. x + 2
Step-by-step explanation:
From the question above, we are asked to find the factors of an algebraic expression that is given as:
x³ - 3x² - 10x
We would use the step of factorisation
Step 1
x(x² - 3x- 10)
The first factor of the algebraic expression has been obtained = x
Step 2
We factorise x² - 3x - 10
x² +2x - 5x - 10
(x²+2x) - (5x - 10)
x(x + 2) -5(x + 2)
(x + 2)(x - 5)
Step 3
x³ - 3x² - 10x
x(x² - 3x- 10)
(x)(x + 2)(x - 5)
Therefore, the factors of the algebraic expression are:
(x), (x + 2), (x - 5)
Since the triangle has 3 equal sides, it has 3 equal angles.
If the total angle degrees is (n-2)180 = 180°
180°/3 = 60° per angle
x:
Since a straight line is 180°, 180°-60° = 120°
y:
And since for a triangle the total measure of the angles is 180° and ∠x is 120°, the equation is;
180 = 120 + y + y
60 = 2y
y = 30°
Answer:
x = 25
y = 25
Step-by-step explanation:
hope it helps!