If you would like to solve the equation 7 * x = 42, you can calculate this using the following step:
7 * x = 42 /7
x = 42 / 7
x = 6
The correct result would be A. x = 6.
Answer:

Step-by-step explanation:
When two dice are rolled, the sample space is

In total, 36 outcomes
First, find the probability that the sum is 10 or greater:
All favorable outcomes
10: 
11: 
12: 
In total, 6 outcomes.
The probability that the sum is 10 or greater is

Use the complement rule to find that the probability that the sum of the dice is less than 10:

Answer:
10 people didn't answer the servey
Step-by-step explanation:
servey=80 people
70= answered the servey
so we should take the difference:-
80–70= 10
Hope I got the right answer!
Correct question:
An urn contains 3 red and 7 black balls. Players A and B withdraw balls from the urn consecutively until a red ball is selected. Find the probability that A selects the red ball. (A draws the first ball, then B, and so on. There is no replacement of the balls drawn).
Answer:
The probability that A selects the red ball is 58.33 %
Step-by-step explanation:
A selects the red ball if the first red ball is drawn 1st, 3rd, 5th or 7th
1st selection: 9C2
3rd selection: 7C2
5th selection: 5C2
7th selection: 3C2
9C2 = (9!) / (7!2!) = 36
7C2 = (7!) / (5!2!) = 21
5C2 = (5!) / (3!2!) = 10
3C2 = (3!) / (2!) = 3
sum of all the possible events = 36 + 21 + 10 + 3 = 70
Total possible outcome of selecting the red ball = 10C3
10C3 = (10!) / (7!3!)
= 120
The probability that A selects the red ball is sum of all the possible events divided by the total possible outcome.
P( A selects the red ball) = 70 / 120
= 0.5833
= 58.33 %
Answer:
-17 degrees
Step-by-step explanation:
Given that:
Initial temperature = 2 degrees
Final temperature = -15 degrees
To Determine:
The change in temperature.
Solution:
First of all, let us have a look at the method for calculating the change in any quantity.
Let the initial quantity = 
Let the final quantity = 
Change in quantity = Final quantity - Initial quantity = 
Here, we are given the quantity as temperature.
where
degrees and
degrees
Therefore, the change in temperature = -15 - 2 =
<em>degrees</em>