Answer:
85 cents
Step-by-step explanation:
Let a represent the price of pineapples
Let p represent the price of peaches
74p + 9a= 14p + 21a
p = 17 cents
Substitute 17 for p
74(17) + 9a = 14(17) + 21a
1258+9a= 238+21a
1258-238= 21a-9a
1020= 12a
a= 1020/12
a= 85
Hence the price of pineapples is 85 cents
Number 6 is {{{y=4x^3 - 7}}} solve for x
{{{4x^3=y+7}}}
{{{x^3=(y+7)/4}}}
{{{x=root(3,(y+7)/4)}}}
{{{f^(-1)=root(3,(x+7)
And Number 7 is Replace
f
(
x
)
f
(
x
)
with
y
y
.
y
=
3
x
x
+
2
y
=
3
x
x
+
2
Interchange the variables.
x
=
3
y
y
+
2
x
=
3
y
y
+
2
Solve for
y
y
.
f
−
1
(
x
)
=
−
2
x
x
−
3
K(4) = (4)^2 +3x-1
k(4) = 27
p(-2) = -7(-2)+10
p(-2) = 24
Answer: k(4) + p(-2) = 51
First, x=1 is a vertical line. A line that is perpendicular would be horizontal so it would have a slope of 0. A line parallel to it would be vertical too so it would have and infinite gradient.
Answer:
49n² - 70n + 25
Step-by-step explanation:
Area of a square = s²
Where,
s = side length = 7n - 5
Area of the square = (7n - 5)²
= (7n - 5)(7n - 5)
= 7n(7n - 5) -5(7n - 5)
= 49n² - 35n - 35n + 25 (distributive property of equality)
Add like terms
Area = 49n² - 70n + 25
Step-by-step explanation:
i might be wrong sorry x
