Answer:
Yes. Mhm. Correctomondo.
Step-by-step explanation:
Answer:
a). At least 99 marks should be scored by the student to get an A.
b). Student has to score at least 59 and less than 99 grades in the 4th exam to get a B.
Step-by-step explanation:
Student's grades on the first three exams are 85, 87, and 89.
Since student's course grade is to be determined by averaging 4 exams.
So average of 4 exams =
Here x is the grade obtained by the student in 4th exam.
If the average of 4 exams to get an A is at least 90 so the expression will be
261 + x ≥ 360
x ≥ 360 - 261
x ≥ 99
At least 99 marks should be scored by the student to get an A.
To get a B (Average of at least 80) the expression will be
320-261 ≤ x < 360-261
59 ≤ x < 99
Therefore, student has to score at least 59 and less than 99 grades in the 4th exam to get a B.
This question presents an interesting pattern.
The rule/pattern to be followed here is:
Left side of the number looking at the previous one: (First digit x Third digit + 1)
Right side: (Second digit x Fourth digit -1)
For example, let us take 6447. Let us look at it's previous number, 9876.
Now, and
that is how we got 6447
Again, for the third number, 2527, let us look at it's previous number, 6447
Now,
and
that is how we got 2527
Going by the same logic, the missing number should be 534.
This we got by applying the rule of the pattern as:
and
Thus, we got 534.
Answer:
The circle is centered at (5, −7) and has a radius of 7.
Step-by-step explanation:
The standard form of the equation of a circle with center (a,b) and radius r is given as:
The given equation is
We rewrite to look like the stay form:
We now compare the two equations to get:
a=5, b=-7 and r=7.
Therefore the circle is centered at (5,-7) and has a radius of 7
Answer:
2nd 4th and 5th
Step-by-step explanation: