Answer:
96 square units
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one. Please have a look at the attached photo.
My answer:
- The length of the large rectangle is: 5
- The width of the large rectangle is: 7
=> Area of the large rectangle = length × width = 7*5 = 35 square units
- The length of the middle rectangle is: 7
- The width of the middle rectangle is: 4
=> Area of the middle rectangle = length × width = 7*4 = 28 square units
- The length of the small rectangle is: 7
- The width of the small rectangle is: 3
=> Area of the small rectangle = length × width = 7*3 = 21 square units
Area of top and the bottom triangles =2* 
Total surface area = 35 + 28 + 21 + 12 = 96 square units
Answer:
the answer is A give me brainliest
The number of years it would take for radium to be 5 grams is 6967 years.
<h3>After how many years will only 5 grams of radium be present?</h3>
The formula that is used to represent continuous compounding or continuous decay is:
FV = A x 
x N
Where:
- A= amount
- e = 2.7182818
- N = number of years
- r = interest rate
5 = 100 x e^−0.00043 x t.
In order to determine the value of t, take the following steps:
Divide both sides by 100
5/100 = e^−0.00043 x t.
Then take the In of both sides
= 6967 years
To learn more about how to determine the number of years, please check: brainly.com/question/25760893
#SPJ1
Answer:
16 cookies
Step-by-step explanation:
Jack = 20 cookies
Anna takes four of his cookies
20 - 4 = 16
Jack has 16 cookies
Hope this helps :)
Answer:
First number: 21 | Second Number: 15 | Third Number: 63
Step-by-step explanation:
First number = a
Third number = 3a
Second number = a - 6
a + a - 6 + 3a = 99
5a - 6 = 99
5a = 105
a = 21
Therefore, No.1 = 21, No.2 = 21 - 6 = 15, No.3 = 21 x 3 = 63
Hope this helps! :D
