Sale 25%
= 25/100 x $40
=$10
Sale price = Original price + Sale 25%
= $40 + $ 10
= $50
Answer:
a = 7.21
Step-by-step explanation:
Remark
This just uses a^2 + b^2 = c^2. You know 2 of the three things there.
<em><u>Givens</u></em>
Solution
a^2 + b^2 = c^2 Substitute the givens
a^2 + 12^2 = 14^2 Expand
a^2 + 144 = 196 Subtract 144 from both sides
a^2 = 196 - 144 Collect like terms on the right
a^2 = 52 Take the square root of both sides.
sqrt(a^2) = sqrt(52)
a = 7.2111
a = 7.21 Answer
If is a sqare we need to find the length of it’s side. |-5|+2=7 is the side of the sqare.
Area of square is 7^2 = 7•7= 49
Answer:
x = 1, y = 3
Step-by-step explanation:
Given:
- 2x + 3y + 4 = 15 ⇒ 2x + 3y = 11
Now let's check the pairs of x and y:
<u>x = 6, y = 3</u>
- 2x + 3y = 2*6 + 3*3 = 12 + 6 = 18 ≠ 11
- incorrect
<u>x = 3, y = 5</u>
- 2x + 3y = 2*3 + 3*5 = 6 + 15 = 21 ≠ 11
- incorrect
<u>x = 6, y = 4</u>
- 2x + 3y = 2*6 + 3*4 = 12 + 12 = 24 ≠ 11
- incorrect
<u>x = 1 , y = 3</u>
- 2x + 3y = 2*1 + 3*3 = 2 + 9 = 11
- correct
Answer:
The Math Club must sell at least 50 pies to reach the goal
The graph in the attached figure
Step-by-step explanation:
Let
x-----> the number of sold pies
we know that
The inequality that represent the situation is
Solve for x
Divide by 4 both sides
The solution is the interval ------> [50,∞)
All positive whole numbers greater than or equal to 50
In a number line the solution is the shaded area at right of x=50 (close circle)
The Math Club must sell at least 50 pies to reach the goal
using a graphing tool
see the attached figure