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Serhud [2]
3 years ago
9

Please help. I will give you a brainliest.

Mathematics
2 answers:
mixas84 [53]3 years ago
4 0

Answer:

Subtracting 4.2x from.

Step-by-step explanation:

Hope this helped!

GREYUIT [131]3 years ago
3 0

Answer:

second choice

Step-by-step explanation:

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Please help not sure what to do
yawa3891 [41]

Answer:

3x12 theres 3 cirs and 6÷4 so 3x12

7 0
3 years ago
I need help solving systems of linear equations by substitution. <br> {4x+3y=14<br> 3x-2y=2
Sauron [17]

Answer:

A) 4x+3y=14

B) 3x-2y=2

We multiply equation A) by (2/3)

A) (8/3) x +2y = 28/3 then we add this to equation B)

B) 3x-2y=2

5 (2/3) x = 11 (1/3)

x = 2

A) 4 * 2 + 3 y = 14

A) 3y = 6

y = 2

Step-by-step explanation:

4 0
3 years ago
According to a​ study, 68​% of all males between the ages of 18 and 24 live at home. ​ (Unmarried college students living in a d
Marat540 [252]

Answer:

a) P(X≥143​)=0

b) This contradicts the study as getting a sample with this proportion is almost impossible (if the proportion of 68% is true).

Step-by-step explanation:

If we use the normal approximation to the binomial distribution we have the following parameters (mean and standard deviation):

\mu=np=0.68*206=140.1\\\\ \sigma=\sqrt{np(1-p)}=\sqrt{206*0.68*0.32}=\sqrt{44.8256}=6.7

Then, we can calculate the probability of X being equal or more than 143 using the z-score:

z=\dfrac{X-\mu}{\sigma/\sqrt{n}}=\dfrac{143-140.1}{6.7/\sqrt{206}}=\dfrac{2.9}{0.4668}=6.2124\\\\\\P(x\geq143)=P(z>6.2124)=0

This contradicts the study as getting a sample with this proportion is almost impossible (if the proportion of 68% is true).

6 0
3 years ago
Pls help. I offer 50.<br><br> A. 3.6<br> B. 3.8<br> C. 3.9<br> D. 4.0
lianna [129]

Answer:

  • B. 3.8

Step-by-step explanation:

<u>Expected egg production is:</u>

  • 3*0.25+4*0.7+5*0.05 = 3.8

Correct choice is B

3 0
3 years ago
Read 2 more answers
1.)$3 for bagels; &amp;9 for 24 bagels
Inessa05 [86]
3 dollars for bagels and 9 dollars for 24 dollar bagels
4 0
3 years ago
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