3 years ago

2/3 feet into inches

Mathematics

1 answer:

alekssr [168]3 years ago

8 0

Answer:

12÷3=4

4inches is 2/3 of a foot.

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A student wanted to construct a 95% confidence interval for the mean age of students in her statistics class. She randomly selec

Alex_Xolod [135]

Answer:

95% confidence interval for the population mean is 20.255 and 17.945

Step-by-step explanation:

given data

mean = 19.1

standard deviation = 1.5

n = 9

to find out

95% confidence interval for the population mean

solution

we know 95% confidence interval formula i.e.

mean +/- t * standard deviation/ $\sqrt{n}$ .............1

here t for 9 students 2.31 ( from t table)

so put all value n t standard deviation and mean in equation 1

= mean +/- t * standard deviation/ $\sqrt{n}$

= 19.1 +/- 2.31 * 1.5/ $\sqrt{9}$

= 20.255 and 17.945

95% confidence interval for the population mean is 20.255 and 17.945

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3 years ago

Solve equation using substitution method 4(x-1)-3x=2

NikAS [45]

Answer:

x = 6

Step-by-step explanation:

Step 1: Write equation

4(x - 1) - 3x = 2

Step 2: Solve for x

Distribute 4: 4x - 4 - 3x = 2
Combine like terms: x - 4 = 2
Add 4 to both sides: x = 6

Step 3: Check

Plug in x to verify it's a solution.

4(6 - 1) - 3(6) = 2

4(5) - 18 = 2

20 - 18 = 2

2 = 2

8 0

3 years ago

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Jennie says the experimental probability that a 7th grade student reads at least 100 pages per week is 16/125. What is her error

alukav5142 [94]

Answer:

Egg

Step-by-step explanation:

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3 years ago

What is the answer to this question?

Elena-2011 [213]

Where’s the question-

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4 years ago

CORRECT ANSWER WILL GET BRAINLIEST EO

pishuonlain [190]

Answer:

Step-by-step explanation:

if x=0 then f(x)=2 (0,2)

if f(x)=0 then x=-1 (-1,0)

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3 years ago