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3 years ago

Pls help, i will give someone a brainlest! Options: Kayla joshua

Mathematics

2 answers:

Genrish500 [490]3 years ago

7 0

Answer:

Kayla would be correct in this problem

AleksAgata [21]3 years ago

4 0

Answer:

Kayla

Step-by-step explanation:

A slope of 0 is a horizontal line

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HELP!! ILL MARK U BRAINLIEST!!!

vagabundo [1.1K]

Answer:

6.96

Step-by-step explanation:

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3 years ago

PLS HELP ASAP WILL GIVE BRAINLIEST

JulsSmile [24]

This is for A part A: It shows that the least amount is 37.5 minutes

It shows the most amount of time is 60 minutes

One thing it does not show is how many students where in the class.

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3 years ago

Find all values of k for which the function y=sin(kt) satisfies the differential equation y′′+16y=0. Separate your answers by co

VashaNatasha [74]

Answer: k = 4, k = -4 and k = 0.

Step-by-step explanation:

If we have y = sin(kt)

then:

y' = k*cos(kt)

y'' = -k^2*son(x).

then, if we have the relation:

y'' - y = 0

we can replace it by the things we derivated previously and get:

-k^2*sin(kt) + 16*sin(kt) = 0

we can divide by sin in both sides (for t ≠0 and k ≠0 because we can not divide by zero)

-k^2 + 16 = 0

the solutions are k = 4 and k = -4.

Now, we have another solution, but it is a trivial one that actually does not give any information, but for the diff equation:

-k^2*sin(kt) + 16*sin(kt) = 0

if we take k = 0, we have:

-0 + 0 = 0.

So the solutions are k = 4, k = -4 and k = 0.

4 0

3 years ago

Estimate the quotient for 317÷42 a.3 b.6 c.7 d.8

lesya [120]

42×3=126
42×6=252
42×7=294
42×8=336

Nearest is Product of 7
So quotient should be 7

4 0

3 years ago

A certain store sells only T-shirts. Let the random variable X represent the number of T-shirts bought from the store on any day

faltersainse [42]

Answer:

$(a)\ \mu_y = 1125$

$(b)\ \sigma_y = 300$

Step-by-step explanation:

Given

$\mu_x = 75$ -- Mean of T-shirts

$\sigma_x = 20$ -- Standard deviation of T-shirts

$Rate = \$ 15$

Solving (a): The mean of the revenue $(\mu_y)$

To solve this, we use:

$\mu_y = Rate * \mu_x\\$

This gives:

$\mu_y = 15 * 75$

$\mu_y = 1125$

Solving (b): The standard deviation of the revenue $(\sigma_y)$

To solve this, we use:

$\sigma_y = \sqrt{Rate^2 * \sigma_2^2}$

This gives:

$\sigma_y = \sqrt{15^2 * 20^2}$

$\sigma_y = \sqrt{90000}$

$\sigma_y = 300$

7 0

3 years ago