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3 years ago

Please HELP!! If you get the right answer I’ll mark you as brainliest

Mathematics

2 answers:

iren [92.7K]3 years ago

5 0

I really believe it’s d and good luck on your test

fomenos3 years ago

4 0

Answer choice D...because the number of children need to be GREATER than 100

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HELP!

pashok25 [27]

Multiplying both sides of −1/3x≤−6 by -3 results in "x is equal to or greater than 18."

Note that multiplying such an inequality requires reversing the direction of the inequality symbol.

I subst. 18 for x in −1/3x≤−6 as a check, and found that the resulting inequality is true.

7 0

3 years ago

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In the following problem, check that it is appropriate to use the normal approximation to the binomial. Then use the normal dist

Tcecarenko [31]

Answer:

a. 0.7291

b. 0.9968

c. 0.7259

Step-by-step explanation:

a. np and n(1-p) can be calculated as:

$np=23\times 0.48\\\\=11.04\\\\n(1-p)=23(1-0.52)\\\\=11.96$

#Both np and np(1-p) are greater than 5, hence, normal approximation is most appropriate:

$\mu_x=11.04\\\\\sigma^2=np(1-p)=0.48\times 0.52\times 23=5.7408$

#Define Y:

Y~(11.04,5.7408)

$P(X\leq 12)\approx P(Y\leq 12.5)\\\\P(Z\leq \frac{(12.5-11.04)}{\sqrt{5.7408}})=\\\\=1-0.2709\\\\=0.7291$

Hence, the probability of 12 or fewer is 0.8291

b. The probability that 5 or more fish were caught.

#Using normal approximation:

$P(X \geq 5) \approx P(Y \geq 4.5) = P(Z \geq\frac{ (4.5-11.04)}{\sqrt{(5.7408)}})\\\\=1-0.0032\\\\=0.9968$

Hence, the probability of catching 5+ is 0.9968

c. The probability of between 5 and 12 is calculated as;

-From b above $P(X\geq 5)=0.9968$ and a , $P(X\leq 12)$ =0.7291

$P(5\leq X\leq 120\approx P(4.5\leq Y\leq 12.5)\\\\=0.7291-(1-0.9968)\\\\=0.7259$

Hence, the probability of between 5 and 12 is 0.7259

4 0

3 years ago

A certain freezing process requires that room temperature be lowered from 35oC at the rate of 6oC every hour. What will be the r

astra-53 [7]

Answer:

-13 degrees celcius.

Step-by-step explanation:

6 degrees are lowered every hour. 6*8 = 48 degrees, 48 degrees are lowered.

35-48 is -13. The room temperature will be -13 eight hours after the process begins.

6 0

3 years ago

I need help :) Find the GCF: 10x^5−16x^4+4x^2

andreev551 [17]

The greatest common factor is 2x^2.
the largest number that divides evenly into 10x^5−16x^4+4x^2 is two.
the highest degree is x^2 so the answer would be 2x^2

5 0

3 years ago

PLEASE HELP!!!!!! FAST!!!!!!!!

klio [65]

Answer:

%8.75 error

Step-by-step explanation:

14.6/n = 16/100

16n = 1460

n = 91.25

100-91.25 = 8.75

7 0

2 years ago

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