Answer:
500 tiles
Step-by-step explanation:
First find the area of the hall=10ft×(10ft×5)=500ft²
Number of tiles required=500ft²÷1ft²=500
Part A. Lest fin the zeros of our function first:
Step 1. Set the right side of the function equal to 0:
Step 2. Multiply both sides of the equation by -1
Step 3. Factor the left side:
Step 4. Set each factor equal to 0 and solve for
:
and
and
Since distances can't be negative, the zero of our function is
.
<span>We can conclude that the zero </span>
represents that when the horizontal distance of the diver is 3 ft, he is is in the surface of the pool. In other words, his vertical distance is zero.
Part B. To factor our quadratic equation
, we are going to use the method for simple cases because
:
Step 1. Find tow numbers whose product is
and its sum is
:
We know form our quadratic that
,
, and
, so
.
We want tow numbers that multiply together to make -18, and add up to 3.
Those number are 6 and -3.
and
Step 2. Rewrite the middle term
using those numbers:
Step 3. Factor the expression:
Answer:
1 7/8÷1/3
Step-by-step explanation:
3/4÷1/3 = 3/4×3 = 9/4 = 2.25
1 7/8÷1/2 = 15/8×2 = 15/4 = 3.75
3/4÷1 1/2 = 3/4÷3/2 = 3/4×2/3 = 1/2 = .5
1 7/8÷1/3 = 15/8×3 = 45/8 = 5.625 (largest)
