Answer:
93 pieces
Step-by-step explanation:
To cover his backyard with sod, he needs to cover the area of the backyard.
His backyard is a rectangle, and area of a rectangle is given as:
Where,
is the length, and
is the width
So, the area of Jim's backyard is square yards.
The area of each sods are solved using the area of the rectangle formula. So we have square yards as the area of each sod.
To find HOW MANY of these sods we would need to cover the whole backyard, we divide the backyard area by each sod area:
Since, fractional sods can't be bought, Jim has to buy 93 sods to cover his backyard.
Answer:

Step-by-step explanation:

If
than
and 

<u>⇒ Switch sides:-</u>
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<u>⇒ Add 1 to both sides:-</u>
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And...

<u>⇒ Add 1 to both sides:-</u>
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<u>⇒ Now, Combine the intervals:-</u>
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Answer:

Step-by-step explanation:
The rate of change in the temperature T of coffee at time t is written as
(remember derivatives are used to express rates of change, and in our case the rate of change of the temperature T). The difference between the temperature M of the air at time t, and the temperature T of the coffee at time t can be expressed as 
Saying that the rate of change in the temperature T is proportional to the difference between M and T is just a way of saying that the rate of change in the temperature T is equal to the difference between M and T, multiplied by some constant k (whose value we don't know, but still that's what it means).
Therefore we get

5.
the diagonal squared = base squared + altitude squared.
What are u asking me too do factor simplify??