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3 years ago

I NEED HELP ASAP, QUESTIONS IN ON THE IMAGE

Mathematics

1 answer:

Furkat [3]3 years ago

8 0

Answer:

i think 140 but im not so sure

Step-by-step explanation:

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For the binomial distribution with n=4 and p=0.25

Effectus [21]

Answer:

a.) .0469

b.) .9961

c.) .9492

Rounded these check below for full answers

Step-by-step explanation:

a.)

${4\choose3}*.25^3*(1-.25)=.046875$

b.)

Porbability of at most 3 successes is equal to 1-p(4)

p(4)=

${4\choose4}*.25^4=.003690625$

1-.003690625=.99609375

c.)

two or more failures is equa lto

p(0)+p(1)+p(2)=

${4\choose0}*.25^0*(1-.25)^4+{4\choose1}*.25^1(1-.25)^3+{4\choose2}*.25^2*(1-.25)^2=.94921875$

4 0

3 years ago

Find sec theta if theta is in quadrant 4 and sin theta= -1/5

lara31 [8.8K]

Answer:

$\frac{5}{2\sqrt{6} }$

Step-by-step explanation:

Since Θ is in fourth quadrant then cosΘ > 0, as is secΘ

Given

sinΘ = - $\frac{1}{5}$ , then

cosΘ = $\sqrt{1-(-1/5)^2}$

= $\sqrt{1-\frac{1}{25} }$ = $\sqrt{\frac{24}{25} }$ = $\frac{2\sqrt{6} }{5}$

Hence

secΘ = $\frac{1}{\frac{2\sqrt{6} }{5} }$ = $\frac{5}{2\sqrt{6} }$

5 0

3 years ago

Read 2 more answers

Solve for x for 19 - 24<br><br> Find the measurement of the indicated in bold for 25 - 28

kondaur [170]

I can’t read the number i would help tho sorrryy

4 0

3 years ago

Name the property illustrated by the following. (a) x + (-x) = 0; (b) x + (-y) = -y + x

Mama L [17]

Answer:

Step-by-step explanation:

8 0

4 years ago

Prove that 25^11 - 5^19 is divisible by 31.

Stells [14]

Answer:

See below

Step-by-step explanation:

25¹¹ - 5¹⁹

Convert to base 5 = (5²)¹¹ - 5¹⁹

= 5²² - 5¹⁹

Factor out the GCF = 5¹⁹(5³ - 1)

= 5¹⁹(125 - 1)

= 5¹⁹ × 124

= 5¹⁹ × 4 × 31

31 is a factor of 25¹¹ - 5¹⁹, so the expression is divisible by 31.

7 0

3 years ago