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ivanzaharov [21]
3 years ago
13

Write an equation in point-slope form of the line that passes through the point (4, 4) with slope 3.

Mathematics
1 answer:
lianna [129]3 years ago
3 0

Answer:

(y-4) = 3(x-4)

Step-by-step explanation:

(y-4) = 3(x-4)

y-4= 3x-12

Y= 3x- 8

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The airport security randomly selected 35 suitcases from in the security line. Of these bags, they screened 7 suitcases. Based o
iVinArrow [24]

Answer: 140

Step-by-step explanation: 7/35 = 5 so for every 5 people 1 will be checked. 700/5= 140

3 0
3 years ago
I NEED HELP ASAP
DiKsa [7]
Length = 4w + 2

A = length x width
= (4w + 2) . w
= 4w^2 + 2w ft square
5 0
2 years ago
1. A farmer divided a field into 1-foot by 1-foot sections and tested soil samples from 32 randomly selected sections in the fie
Ad libitum [116K]
Part A

Answers:
Mean = 5.7
Standard Deviation = 0.046

-----------------------

The mean is given to us, which was 5.7, so there's no need to do any work there.

To get the standard deviation of the sample distribution, we divide the given standard deviation s = 0.26 by the square root of the sample size n = 32
So, we get s/sqrt(n) = 0.26/sqrt(32) = 0.0459619 which rounds to 0.046

================================================

Part B

The 95% confidence interval is roughly (3.73, 7.67)
The margin of error expression is z*s/sqrt(n)
The interpretation is that if we generated 100 confidence intervals, then roughly 95% of them will have the mean between 3.73 and 7.67

-----------------------

At 95% confidence, the critical value is z = 1.96 approximately

ME = margin of error
ME = z*s/sqrt(n)
ME = 1.96*5.7/sqrt(32)
ME = 1.974949
The margin of error is roughly 1.974949

The lower and upper boundaries (L and U respectively) are:
L = xbar-ME
L = 5.7-1.974949
L = 3.725051
L = 3.73
and
U = xbar+ME
U = 5.7+1.974949
U = 7.674949
U = 7.67

================================================

Part C

Confidence interval is (5.99, 6.21)
Margin of Error expression is z*s/sqrt(n)
If we generate 100 intervals, then roughly 95 of them will have the mean between 5.99 and 6.21. We are 95% confident that the mean is between those values.

-----------------------

At 95% confidence, the critical value is z = 1.96 approximately

ME = margin of error
ME = z*s/sqrt(n)
ME = 1.96*0.34/sqrt(34)
ME = 0.114286657
The margin of error is roughly 0.114286657

L = lower limit
L = xbar-ME
L = 6.1-0.114286657
L = 5.985713343
L = 5.99

U = upper limit
U = xbar+ME
U = 6.1+0.114286657
U = 6.214286657
U = 6.21
5 0
3 years ago
4 divided by what = 9
vfiekz [6]
It 36 hope i helped!!


Assume answer as x;

x÷4=9 or x4=9

Multiply 9 with 4;

x=9×4

x=36

3 0
3 years ago
Read 2 more answers
a man is 3 times as old as his son . the sum of their ages is 48 years .how old is the son ? how old is the dad?
Ulleksa [173]

Answer:

son is 12

dad is 36

Step-by-step explanation:

Say the son is x years old.

Then the father is 3x. Also 3x+x must be 48.

So 4x = 48 => x= 48/4 = 12

7 0
3 years ago
Read 2 more answers
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