By adding 74,68,87,92,96,47,26,87 which gives you 577 and divide by 8 equals 72.1 hope that helps
Since both terms are perfect cubes, factor using the difference of cubes formula,
a
3
−
b
3
=
(
a
−
b
)
(
a
2
+
a
b
+
b
2
)
a
3
-
b
3
=
(
a
-
b
)
(
a
2
+
a
b
+
b
2
)
where
a
=
x
2
a
=
x
2
and
b
=
y
b
=
y
.
(
x
2
−
y
)
(
(
x
2
)
2
+
x
2
y
+
y
2
)
(
x
2
-
y
)
(
(
x
2
)
2
+
x
2
y
+
y
2
)
Multiply the exponents in
(
x
2
)
2
(
x
2
)
2
.
The diagonal is solved by a^2+b^2=c^2
c=8 in this problem, so c^2=64
Since the figure is a square, a must equal b.
64/2=32, each side is root of 32 units
the square root of 32 is approximately 5.66.
Answer:
15%
Step-by-step explanation:
You take the number of student in <u>8th grade</u> that are on social media for <u>more</u> than an hour which gives you (12) and divide it by the total number of students (81).
12/81=0.148 repeating
You then round 0.148 repeating to 0.15 and then turn it into a percent by moving the decimal two places to the right.
Step-by-step explanation:
step 1: note down the given quadratic equation and compare it with the standard form ax2 + bx + c
so from the equation given
a = 1
b = k -3
c = 3-2k
step 2: look at the hints given in the question and according to the hints choose the discrimination (b2- 4ac) of the equation
1) b2 - 4ac > 0 (positive), there are 2 real solutions
2) b2 - 4ac = 0 (zero), there is one real solution
3) b2 - 4ac < 0 (negative) , there are 2 complex solutions or no real roots
step 3
substitute the values of a,b and c in the suitable discrimination i.e b2 - 4ac > 0
(k-3)2 - 4(1)(3-2k) > 0
(k2 + 9) - (12-8k) > 0
k2 + 9 - 12 + 8k
k2 - 3 + 8k
that is k2 + 8k - 3
a) K does not satisfy the equation
