Answer:
-45
Step-by-step explanation:
-50 + 2a represents the sum of the constant -50 and twice the value of the variable a.
If a = 2.5, then -50 + 2a has the value -50 + 2(2.5) = - 50 + 5 = -45.
Answer:
70 cans of paint
Step-by-step explanation:
We are told in the question that:
1 box holds = 14 cans of paint
5 boxes =
Cross Multiplying
5 boxes will hold = 5 × 14
= 70 cans of paint
This question, requires that we use Distributive property
Distributive property states that: when 2 factors or numbers are multiplied together the result will be the same as splitting on of the numbers(factors) into two distinct numbers, multiplying both number by the other factor, and adding together both products.
Applying the definition above to solve the question, we would be splitting the number of boxes which is 5 into 2 distinct number = 2 and 3
As , 2 + 3 = 5
Hence, we have:
14 × 5 = 14( 2 + 3)
70 = 28 + 42
70 cans of paint = 70 cans of paint.
The numbers of cans of paint that are in the art supply closet is 70 cans of paint
10. The volume of the triangular prism is 
, then
.
11. The volume of the triangular pyramid is 
, then
.
12. They have common base (common triangle). y=7.7, r=23.1, then r:y=23.1:7.7=3.
13. See 10 and 11 for notations in symbols.
Answer:
Step-by-step explanation:
Sum of external angles = 360
2x + 2x + x + 20 +x +40 = 360
6x + 60 = 360
6x = 360 - 60
6x = 300
x = 300/6
x = 50
