Answer:
-4 = ?
Step-by-step explanation:
<u>Step 1: Substitute -1 for x</u>
7x^3 + 5x^2 - 2 = ?
7(-1)^3 + 5(-1)^2 - 2 = ?
7(-1) + 5(1) - 2 = ?
-7 + 5 - 2 = ?
-4 = ?
Answer: -4 = ?
Answer:The answer is 2 hope this helps!
Step-by-step explanation:
Answer:
-24 + 3b
Step-by-step explanation:
-3 times 8 - -3 times b
-24 - -3b
and leave it alone cause its not like terms
Perimeter of the quadrilateral = 48 cm
Solution:
The dimensions of the quadrilateral are 2x, 2x – 1, x – 3 and 3x.
The dimensions of the triangle are x + 3, 5 and x + 3.
<em>Perimeter of the polygon = Sum of the sides of the polygon</em>
The perimeter of the quadrilateral = 2 × Perimeter of the triangle
2x + 2x – 1 + x – 3 + 3x = 2 × (x + 3 + 5 + x + 3)
8x – 4 = 2 × (2x + 11)
8x – 4 = 4x + 22
Add 4 on both sides of the equation.
8x = 4x + 26
Subtract 4x on both sides of the equation.
4x = 26
Divide by 4 on both sides of the equation.
x = 6.5
Perimeter of the quadrilateral = 2 × (x + 3 + 5 + x + 3)
Perimeter of the quadrilateral = 2 × (6.5 + 3 + 5 + 6.5 + 3)
= 2 × (9.5 + 5 + 9.5)
= 2 × 24
= 48
Perimeter of the quadrilateral = 48 cm
Here is another one of those " quadratic word problems " at hand, which is great!
By the function that is given to us ( which I believe is meant to be 
) the airplane is launched at a height of 251 metres, with no velocity. Anyhow, we need to determine the duration with which the airplane will strike the ground, and to do so we can set up the following equation, 
- solving for t, otherwise known to be the time!
See the procedure below -
- Subtract 251 from either side,
- Divide either side by - 5,
- And, now isolate t, receiving two solutions,
However, time can't be a negative value. Thus our solution is 
, which is ( about ) 7.085 seconds!
