Answer: c. $9.00
Step-by-step explanation:
45 x .20 = 9.00
Answer:
Given first price: $10
New price: $12
Difference: New price - Old price
⇒ $12 - $10
⇒ $2
Now difference precentage:
(Difference÷Initial price)×100
⇒ (2 ÷ 10) × 100
⇒ 0.2 × 100
⇒ 20%
Thus the increase is by 20%
Answer:
24cm^2
Step-by-step explanation:
1/2Bh is the formula to find a triangle.
Round the 7.8 to an 8 and the 5.78 to a 6. Multiply 8 and 6, getting 48. Divide by 2 because you need 1/2 of the base×height.
48÷2=24
Answer:
is the answer
Step-by-step explanation:
ax+by=c
subtracting ax on both sides
ax-ax+by=c-ax
by=c-ax
dividing b on both sides
by/b=
hope it will help ^_^
Answer:
x = - 4, x = 1
Step-by-step explanation:
At the point of intersection
f(x) = g(x) , that is
(x + 3)² = 3x + 13 ← expand left side using FOIL
x² + 6x + 9 = 3x + 13 ( subtract 3x + 13 from both sides )
x² + 3x - 4 = 0 ← in standard form
(x + 4)(x - 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 4 = 0 ⇒ x = - 4
x - 1 = 0 ⇒ x = 1
