Answer:
A
Step-by-step explanation:
it’s gonna have to add up to 180°, and 5 x 8 - 6 = 34
89 + 57 = 146
146 + 34 = 180
Answer:
Yes they are directly proportional quantities.
Step-by-step explanation:
We find the area of a square by;
A = length squared or (L)² , where 'L' stands for length and 'A' stands for area.
So Area = L²
Assume the length is a units and increase the length by 2 units
The initial area before increasing the length is a²
After increasing the length, the area becomes: (a + 2)² = a² + 4a + 4
Now we subtract the initial area from the final area and get;
(a² + 4a + 4) - a² = 4a + 4
So the new area increases by 4a + 4 units.
Hence, the area increases as the length increases implying that the area of a square is directly proportional to its length.
We denote this proportionality as;
A ∝ L
If a advertised sofa is $200 but the more costly sofa is $375, the average cost of such a sofa will be $200 is $243.75.
<h3>Define the term average of the number?</h3>
- An averaging is a single number calculated as the average of a set of numbers,.
- Typically calculated as the sum of a numbers divided by the total number of numbers in the set (the arithmetic mean).
You're planning to purchase a sofa from a furniture store that is having a sale on them.
Let x represent the sofa's price.
Advertised sofa's cost = $200
Expensive sofa's cost = $375
The advertisers are aware that when customers arrive at the store, one out of three switch to an expensive sofa that the one shown in the sale advertisement.
Average cost = 375 x 1/4 + 200 x 3/4
E(x) = 375 x 1/4 + 200 x 3/4
E(x) = 93.75 + 150
E(x) = 243.75
Thus, if a advertised sofa is $200 but the more costly sofa is $375, the average cost of such a sofa will be $200 is $243.75.
To know more about the mean average , here
brainly.com/question/20118982
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Answer:
only the first sentence is true
Step-by-step explanation:
