Answer:
(a) Ginny made a mistake in step 1 when she identified b = 31. It should be b=–31.
Step-by-step explanation:
The value of b is the coefficient of x. In the given quadratic expression, the coefficient of x is -31, so Ginny should have started with b = -31 in step 1.
Answer:
Jerry is correct
Step-by-step explanation:
this equation is asking 8 to what power is 512
Emma said the solution is x=3. Her explanation is 8 x 3 which would equal 24. This is not the correct answer.
Jerry's solution is x = 3. His explanation is 8 x 8 x 8 which would equal 512. This is the correct answer.
Mel's solution is x = 8. Her explanation is 8 x 3 which equals 24. This is not the correct answer.
Victoria's solution is x = 8. Her explanation is 8 x 8 x 8 which would equal 512. However, her explanation is correct, her solution is not. . That is what her solution is saying.
the factors are: 1,2,4,5,10,20. So Therefore there are 6 factors.
Answer:
the new frame is bigger than the original frame by 10%
Step-by-step explanation:
Let the length of the original frame be l,
then it's width is (10% of l)=×l
=
hence area of original frame=A=length×width
=
now the length of frame is enlarged by 10%
new lenght of frame=l+10%×l
=l+×l
=×l
width of new frame==
area of new frame=length×width
=
percent change=((area of new frame-area of old frame)×100)÷area of old frame
=10%
Answer:
35.4%
Step-by-step explanation:
We are given that,
The percentage of students in junior level who likes soccer = 33% of 45%
i.e. The percentage in junior who likes soccer = = 0.33 × 0.45 = 0.1485 = 14.85%
Also, the total percent of the students who likes soccer = 0.4195 = 41.95% ≅ 42% = 0.42
Thus, we get,
Probability of students in junior level who likes soccer = = 0.354
Thus, the probability of the students in junior level liking soccer is 35.4%