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antoniya [11.8K]
3 years ago
15

How do you find 2a+b?

Mathematics
1 answer:
ser-zykov [4K]3 years ago
5 0
A = 2/-3  which is -0.6666... 
and b= 1/4. 
so what you want to do is -0.66666666666 * 2 = -1.33333333333
 then you want to do -1.33333333333 + .24 =  (-1.093333333) is your answer
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Construct a 95​% confidence interval estimate of the mean net change in ldl cholesterol after the garlic treatment. what does th
nikitadnepr [17]

 Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL​cholesterol?

sample mean = x-bar = 4.7
ME = 1.96*15.6/sqrt(43) = 4.663

95% CI: 4.7 - 4.663 < u < 4.7 + 4.663

5 0
3 years ago
In geotown,there are 210 teenagers that own a tablet. this is at least 4/5 of all teenagers that live in geotown. what is the ma
Lelu [443]
Hello,

the answer is 252.
hope this helped!

5 0
3 years ago
Read 2 more answers
The populations of two cities after t years can be modeled by -150t+50,000 and 50t+70,0000 . What is the difference in the popul
Sindrei [870]

Answer:

25,800

Step-by-step explanation:

Plug in 4 everytime you see T.

multiple-150 times 4 plus 50000 which gives you 49,400.

then multiple 50 times 4 and add 75000, giving you 75,200 then subtract 75,200 - 49,400 which you end up with 25,800.

hope this helped

5 0
2 years ago
How to do improper fractions with 3.8 repeating
vivado [14]
3.88888=3.88888/1=38.8888888

so lets ssay our repeating decimal = a fraction x
x=3.888 is true
multiply by 10
10x=38.8888
now subtract fir frist eqation from second
10x-x=38.8888-3.888888
9x=35
divide both sides by 9
x=35/9
x=3 and 7/9

anser is 3.88=3 and 7/9

3 0
3 years ago
In the diagram below AFB is congruent to EFD if EFD = 5x + 6, DFC = 19x - 15, and EFC = 17x + 19, find AFE
yanalaym [24]

The angle m∠AFE is 128 degrees.

<h3>How to find angles?</h3>

∠AFB ≅ ∠EFD

∠EFD = 5x + 6

m∠DFC = (19x - 15)°

m∠EFC = (17x + 19)°

m∠AFE = ?

m∠AFB + m ∠EFD + m∠AFE = 180

Therefore,

5x + 6 + 5x + 6 + m∠AFE = 180

5x + 5x + 6 + 6 + m∠AFE = 180

10x + 12 + m∠AFE = 180

10x + m∠AFE = 180 - 12

10x + m∠AFE  = 168

m∠AFE = 168 - 10x

m∠EFC =  m ∠EFD + m∠DFC

17x + 19 = 5x + 6 + 19x - 15

17x - 5x - 19x = 6 - 15 - 19

-7x = - 28

x = 28 / 7

x = 4

Therefore,

m∠AFE = 168 - 10x

m∠AFE = 168 - 10(4)

m∠AFE = 168 - 40

m∠AFE = 128°

Therefore, the angle m∠AFE = 128°

learn more on angles here: brainly.com/question/13212279

#SPJ1

7 0
2 years ago
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