ekmusicent4028
14.10.2020 •
Mathematics
Cecilia simplified an expression. Her work is shown below.
(6 and one-half + 2 and three-fourths) minus 1.5 times (4.5 divided by 0.5)
Step 1 9 and one-fourth minus 1.5 times (4.5 divided by 0.5)
Step 2 7.75 times (4.5 divided by 0.5)
Step 3 7.75 times 9
Step 4 69.75
Where did Cecilia make her first mistake?
step 1
step 2
step 3
step 4
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Ответ:
Step-by-step explanation:
Given work on simplification
(6 and one-half + 2 and three-fourths) minus 1.5 times (4.5 divided by 0.5) (6 1/2 + 2 3/4) - 1.5 (4.5 ÷ 0.5)Step 1 9 and one-fourth minus 1.5 times (4.5 divided by 0.5)
9 1/4 - 1.5 (4.5 ÷ 0.5)This is ok as first step is solving parenthesisStep 2 7.75 times (4.5 divided by 0.5)
7.75 (4.5 ÷ 0.5)Incorrect, subtraction should be the last stepОтвет:
slope intercept form is y = mx + b, m is slope and b is y-intercept.
the "steepness" is m
and the "point where the line crosses the y-axis" is the y-intercept, which is "b" value.