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2 years ago

10

What is a slopeit says (3,11) and(-1,21) what is the slope

2 answers:

Vinil7 [7]2 years ago

8 0

Answer:

-2.5

Step-by-step explanation:

ANEK [815]2 years ago

5 0

The slope is something I don’t know

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Suppose a baseball is thrown vertically upward from the ground with an initial velocity of Subscript[v, 0] ft/s. Its height abov

Zina [86]

Answer:

90.5

Step-by-step explanation:

Velocity is a time-derivative of displacement or the height, in this case.

$s(t)=-16t^2+v_0t$

$v(t) = -32t+v_0$

At maximum height, the velocity is 0 and the height is 128.

Substitute these values into both equations above,

$0 = -32t+v_0$

$t=\dfrac{v_0}{32}$

From the first equation,

$128 = -16t^2 + v_0t$

Substitute for $t$ .

$128 = -16(\dfrac{v_0}{32})^2 + v_0\times\dfrac{v_0}{32}$

$128 = -v_0^2/64 + v_0^2/32$

$128=\dfrac{v_0^2}{64}$

$v_0^2=8192$

$v_0=64\sqrt{2}=90.5$

5 0

3 years ago

True or false?<br> If 3a > 9, then a > 27

olchik [2.2K]

False because 3x27 would equal 81 a should equal less than 27

8 0

2 years ago

Find the values of a, b and c.

shusha [124]

C= 45
All interior angles of a triangle add to 180. 90+45=135. 180-35=45

a= 45
The top angle of the triangle and a make 90 degrees together. 90-45=45

b= 135
Angle a and b together make 180 (they are supplementary). 180-45=135

5 0

2 years ago

A student's course grade is based on one midterm that counts as % of his final grade, one class project that counts as % of

Andrei [34K]

Answer:

The overall score is 75.6

Letter grade is C

Step-by-step explanation:

The question has missing details (See comment section for complete question).

From the complete question, we have:

<u>Proportion:</u>

$Midterm = 15\%$

$Project = 25\%$

$Assignment = 40\%$

$Exam = 20\%$

Scores

$Midterm = 66$

$Project = 90$

$Assignment = 75$

$Exam = 66$

Solving (a): The overall score

To do this, we simply calculate the mean of the given data.

The mean is calculated by multiplying each proportion by the scores..

So, we have:

$Overall = 15\% * 66 + 25\% * 90 + 40\% * 75 + 20\% * 66$

$Overall = 9.9 + 22.5 + 30 + 13.2$

$Overall = 75.6$

Solving (b): The letter grade

From the question, we have:

$A: Mean \ge 90$

$B: 80 \le Mean < 90$

$C: 70 \le Mean < 80$

The overall score falls in the following category:

$C: 70 \le Mean < 80$

Because:

$70 \le 75.6 < 80$

<em>Hence, the letter grade is C</em>

8 0

2 years ago

Convert 153 into radians to the nearest two decimal places

Tasya [4]

2.67035

Formula: 154°x(pie)/180=2.67rad

7 0

2 years ago