Answer:
15
Step-by-step explanation:
Just substitute the x for 5
In this case:
Original function: f(x) = 
- 2x
Substitute function: f(5) = 
- 2(5)
Now solve for the substitute function
- 2(5)
25 - 10
15
Therefore, f(5) is equal to 15
Answer:
5.5
Step-by-step explanation:
<span> <u>24 + 3x = 3x + 3(7 - 1)</u>
Eliminate the parentheses: 24 + 3x = 3x + 3(6)
24 + 3x = 3x + 18
Subtract 3x from each side: <em>24 = 18</em>
Look at that for a second. Can ANY value of 'x' make 24 equal to 18 ?
I don't think so.
There's NO number that makes the equation a true statement.
That's just another way to say: "The equation has NO solution."</span>
Answer:
20in²
Step-by-step explanation:
The area of a triangle is calculated using the formula A = bh/2
"A" means area.
"b" is for the base.
"h" is for the height.
It does not matter which is the base and which is the height, as long as they are perpendicular (at 90°) to each other.
5in can be the height.
8in can be the base.
Put the base and height measurements into the formula.
A = bh/2
A = (8in)(5in)/2 Multiply the measurements and the units.
A = (40in²)/2 Divide by 2
A = 20in² Area of the triangle
When you multiply units, in X in becomes in².
"in" has the exponents 1. When you multiply two "in" with exponent 1, you add the exponents. 1 + 2 = 2.
in¹ X in¹ = in¹⁺¹ = in²
Answer:
Step-by-step explanation:
The general for for the equation of a circle is
Where a is the x coordinate of the centre, b is the y coordinate of the centre and r is the radius.
In your case, a=0, b=0, r=9
Substituting these values into the general form gives the answer.
