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Oksi-84 [34.3K]
3 years ago
15

What is the slope of this equation y+3=2(x-1)

Mathematics
2 answers:
marta [7]3 years ago
8 0
The slope for y+3=2(x-1) is y=2x-5
Semmy [17]3 years ago
4 0

Answer && Step-by-step explanation:

Simply begin to solve for y:

=> y=2(x-1)-3

dist. 2

=>y=2x-2-3

simplify constants

==y=2x-5

slope equation y=mx+b

m=slope

b=y intercept

slope == 2

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Which ordered pair is a solution of this<br> equation?<br> -3x + 7y - 6<br> =
Mumz [18]

Answer:

There are actually an infinite number of ordered pairs that will satisfy the equation y=3x+7 including (-1,4), (0,7) and (1, 10).

Step-by-step explanation:

5 0
2 years ago
Can someone pls help me with this?
Misha Larkins [42]

Answer:

the answer is C

Step-by-step explanation:

3 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
When you multiply a function by -1, what is the effect on its graph?
Dafna1 [17]

9514 1404 393

Answer:

  B.  The graph flips over the x-axis

Step-by-step explanation:

When you plot the coordinate pair (x, y), you plot the point 'y' units above the x-axis. If you change the sign of that (multiply the function by -1), then the point becomes (x, -y), and is plotted 'y' units below the x-axis.

The graph flips over the x-axis.

__

Attached is an example of a function with its original graph (red) and the graph after being multiplied by -1 (blue). The blue graph is a reflection of the red graph across the x-axis.

5 0
2 years ago
Four brothers each bought two hot dogs and a bag of chips at the football concession stand. If the bag of chips was 1.25, and th
SSSSS [86.1K]

Answer:

  $1.65

Step-by-step explanation:

If h is the price of a hot dog, then the total bill was ...

  4(2h +1.25) = 18.20

  2h +1.25 = 4.55 . . . . . . divide by 4

  2h = 3.30 . . . . . . . . . . . subtract 1.25

  h = 1.65 . . . . . . . . . . . . . divide by 2

The price of one hot dog was $1.65.

6 0
3 years ago
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