All categories

3 years ago

Can someone please help with these 4 questions?

Mathematics

1 answer:

choli [55]3 years ago

7 0

Answer:

Q4. 2144 Q5. -16 Q6. Downwards Q7. 0 seconds

Step-by-step explanation:

Q4. h(t) = -16t² + 2400 Substitute 4 for t

h(4) = -16(4)² + 2400 Simplify the exponent

h(4) = -16(16) + 2400 Multiply

h(4) = -256 + 2400 Add

h(4) = 2144

Q5. I graphed the equation on the graph below to find the instantaneous velocity. The instantaneous velocity is -16.

Q6. At 4.5 seconds, the water rocket is traveling down because the highest point the rocket goes is at 2.8, so 4.5 is traveling downwards.

Q7. 0 seconds because the rocket goes 0 feet in 0 seconds.

If these answers are correct, please make me Brainliest!

You might be interested in

Someone plssssss help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Cloud [144]

Answer:

That is zearn you know it you got this

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

this week Shauna practiced her saxophone for 25 minutes less than 3 times the number of minutes she practiced last week. if she

Ymorist [56]

Answer:

3m - 25

Step-by-step explanation:

3m - 25 will represent how many minutes she practiced this week:

3m represents 3 times the number of minutes she practiced last week. Then, subtract 25 from this.

This will represent 25 minutes less than 3 times the number of minutes she practiced last week.

3 0

4 years ago

6 to the 4th power times 6 to the 4th power

Dvinal [7]

Answer:

1679616.

Step-by-step explanation:

6^4=1296

1296x1296 =1679616

Literally answered this same question yesterday asked by someone else.

5 0

3 years ago

Read 2 more answers

Square Roots

dlinn [17]

4 is the square root of 16

i think that what you are asking, but if it is not tell me and i can try to help more :)

4 0

4 years ago

Find the critical points, domain endpoints, and local extreme values for the function

aliina [53]

Answer:

a) $x = -3$ , b) $x = 0$ , $x = -6$ , c) $x = 0$ , d) $x = -6$

Step-by-step explanation:

a) Let derive the function:

$f'(x) = \frac{10\cdot x \cdot (x+3)-5\cdot x^{2}}{25\cdot (x+3)^{2}}$

$f'(x)$ is undefined when denominator equates to zero. The critical point is:

$x = -3$

b) $f'(x) = 0$ when numerator equates to zero. That is:

$10\cdot x \cdot (x+3) - 5\cdot x^{2} = 0$

$10\cdot x^{2}+30\cdot x -5\cdot x^{2} = 0$

$5\cdot x^{2} + 30\cdot x = 0$

$5\cdot x \cdot (x+6) = 0$

This equation shows two critical points:

$x = 0$ , $x = -6$

c) The critical points found in point b) and the existence of a discontinuity in point a) lead to the conclusion of the existence local minima and maxima. By plotting the function, it is evident that $x = 0$ corresponds to a local maximum. (See Attachment)

d) By plotting the function, it is evident that $x = -6$ corresponds to a local minimum. (See Attachment)

8 0

3 years ago