Alicia rolls two fair number cubes numbered from 1 to 6. She first defines the sample space, as shown below:
2 answers:
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Answer:
Step 2
Step-by-step explanation:
Let
Plot the vertices to better understand the problem
see the attached figure
The area of the rectangle is equal to
we have
step 1
Find the base b (BD)
step 1 is correct
step 2
Find the height h (BA)
step 2 is not correct
step 3
Find the area
Therefore
Sara first make a mistake in finding the area of the rectangle in Step 2
Answer:
C
Step-by-step explanation:
To solve this use the equation given in the problem and the value y = 50. Substitute y = 50 then solve for x by factoring.
Find two numbers which multiply to -100 and also add to -15. The numbers are -20 and 5.
So the factored form is (x-20)(x+5) = 0.
Set each factor equal to 0 and solve.
(x-20) = 0 so x = 20.
(x+5)=0 so x = -5.
This means the temperature is 20 degrees C or -5 degrees C. Only 20 is an option. The solutions is C.