Given:
1 - 50 written in red marker
51 - 100 written in blue marker
Probability of selecting a number greater than 81; 100 - 81 = 19 possible numbers. 1 draw. 1/19
Probability of selecting a number written in red: 1/50
Probability of selecting a number written in blue: 1/50
Probability of selecting a number that is a multiple of 10. There are 10 instances; 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 ; 1/10
Part A:
If 25% is dark chocolate and the rest is milk chocolate then, dark + milk = all
25% + milk chocolate= 100%
Subtract 25% from both sides and 100 minus 25 is 75 so, milk chocolate is 75% of all the chocolate.
Now, if there is 3 pounds of milk chocolate then 3 pounds= 75%.
You would divide by 3 so, 75 divided by 3 is 25.
1 pound or lb= 25% which us the amount of dark chocolate that there is.
Now, we know that there milk chocolate is 75% and dark chocolate is 25% of all the chocolate.
M= pounds of milk chocolate
D= dark chocolate
Equation: m divided by d or m/d= 75 divided by 25 or 75/25 or m/d=3 and m=3
3 divided by d or 3/d=3
3=3d
D=1
Part B:
There is 1 pound of dark chocolate in the candy.
Hope this helps! :)
Answer:
360 cm^2.
Step-by-step explanation:
Area of the base = 10*10 = 100 cm^2.
We find the slant height of the sides using Pythagoras:
h = sqrt ( 12^2 + 5^2)
h = sqrt 169
h = 13.
Area of the triangular sides = 4 * 1/2 * 10* 13
= 260 cm^2
So the total surface area = 100 + 260
= 360 cm^2.
Answer: (i) 4x - 40 = 76
(ii) 29 questions
Step-by-step explanation:
Let the total number of questions be x.
Since he received 4 points for every correct answer and he got 10 answers wrong , this means he lost 40 points , the equation thus become
4x - 40 = 76
To find the value of x , add 40 to both sides
4x = 116
divide through by 4
x = 29
Therefore , there are 29 questions on his math test
