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3 years ago

I need help with these questions

Mathematics

2 answers:

igomit [66]3 years ago

7 0

6. n=14
7. 3 h.
8. t=13

Gnesinka [82]3 years ago

5 0

6. n=14
7. 3 hours
8. t=13

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2) A ray is a geometric figure that consist of

Molodets [167]

Answer: A

Good luck and have an amazing day! ✨

5 0

3 years ago

Please answer this question immediatly

Alina [70]

Apple be A and blueberries be B

As per Venn diagram

n(A)=12
n(B)=7
n(A$\cap$B)=3

n(A)+n(B)
12+7
19

P(A)=12/24

P(B)=7/24

Add

12+7/24
19/24

#2.

n(AUB)

n(A)+n(B)-n(An B).
19-3
16

E=8+16=24

P(AUB)=16/24=2/3

3 0

2 years ago

Read 2 more answers

Find the solution to the differential equation dx/dy+y/3=0 subject to the initial conditions y(0)=12.

ycow [4]

$\dfrac{\mathrm dx}{\mathrm dy}+\dfrac y3=0\iff\mathrm dx=-\dfrac y3\,\mathrm dy$
$\implies\displaystyle\int\mathrm dx=-\frac13\int\mathrm y\,dy$
$\implies x=-\dfrac16y^2+C$

Given that $y(0)=12$ , we have

$0=-\dfrac16(12)^2+C\implies C=24$

So the particular solution to the initial value problem is

$x=-\dfrac16y^2+24\iff y^2=144-6x$

8 0

3 years ago

Use the standard deviation values of the two samples to find the standard deviation of the sample mean differences.

larisa86 [58]

The standard deviation of the sample mean differences is 4.854

<h3>How to determine the standard deviation of the sample mean differences?</h3>

The table of values is given as:

<u>Sample Standard deviation</u>

Red box 3.868

Blue box 2.933

The standard deviation of the sample mean differences is calculated using:

$\sigma = \sqrt{\sigma_1^2 + \sigma_2^2}$