1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zepelin [54]
3 years ago
13

PLEASE HELP LOL solve it then graph it

Mathematics
1 answer:
dybincka [34]3 years ago
3 0

Answer:

Step-by-step explanation:

9.)

z + 3 > 2/3

z > -7/3

You want an unshaded dot on the point -7/3 going towards the right.

10.)

1/2 ≤ c - 3/4

5/4 ≤ c

You want a shaded dot on the point 5/4 going towards the left.

You might be interested in
What is the equation of the best-fitting regression line? Find this in two ways. First, using the regression analysis part of th
Lemur [1.5K]

Step-by-step explanation:

Regression analysis is used to infer about the relationship between two or more variables.

The line of best fit is a straight line representing the regression equation on a scatter plot. The may pass through either some point or all points or none of the points.

<u>Method 1:</u>

Using regression analysis the line of best fit is: y=\alpha +\beta x+e

Here <em>α </em>= intercept, <em>β</em> = slope and <em>e</em> = error.

The formula to compute the intercept is:

\alpha =\bar y-\beta \bar x

Here<em> </em>\bar y and \bar x are mean of the <em>y</em> and <em>x</em> values respectively.

\bar y=\frac{\sum y_{i}}{n} \\\bar x=\frac{\sum x_{i}}{n}

The formula to compute the slope is:

\beta =\frac{\sum (x-\bar x)(y - \bar y)}{\sum (x=\bar x)^{2}}

And the formula to compute the error is:

e=y-\alpha -\beta x

<u>Method 2:</u>

The regression line can be determined using the descriptive statistics mean, standard deviation and correlation.

The equation of the line of best fit is:

(y-\bar y)=r\frac{\sigma_{x}}{\sigma_{y}} (x-\bar x)

Here <em>r</em> = correlation coefficient = r=\frac{Cov (x,y)}{\sqrt{\sigma^{2}_{x}\sigma^{2}_{y}} }

\sigma_{x} and \sigma_{y} are standard deviation of <em>x</em> and <em>y</em> respectively.

\sigma_{x}=\frac{1}{n}\sum (x-\bar x)^{2} \\\sigma_{y}=\frac{1}{n}\sum (y-\bar y)^{2}

3 0
3 years ago
PLEASE HELP ASAP!!
34kurt

Answer:

$123

Step-by-step explanation:

230/20=11.5

11.5x2=23

23+100=123

4 0
3 years ago
Determine the LCm of 15 and 20
docker41 [41]
If you just want to know what is the least common multiple of 20 and 15, it is 60. Usually, this is written as lcm(20,15) = 60
5 0
3 years ago
Eli invested $ 330 $330 in an account in the year 1999, and the value has been growing exponentially at a constant rate. The val
Cloud [144]

Answer:

The value of the account in the year 2009 will be $682.

Step-by-step explanation:

The acount's balance, in t years after 1999, can be modeled by the following equation.

A(t) = Pe^{rt}

In which A(t) is the amount after t years, P is the initial money deposited, and r is the rate of interest.

$330 in an account in the year 1999

This means that P = 330

$590 in the year 2007

2007 is 8 years after 1999, so P(8) = 590.

We use this to find r.

A(t) = Pe^{rt}

590 = 330e^{8r}

e^{8r} = \frac{590}{330}

e^{8r} = 1.79

Applying ln to both sides:

\ln{e^{8r}} = \ln{1.79}

8r = \ln{1.79}

r = \frac{\ln{1.79}}{8}

r = 0.0726

Determine the value of the account, to the nearest dollar, in the year 2009.

2009 is 10 years after 1999, so this is A(10).

A(t) = 330e^{0.0726t}

A(10) = 330e^{0.0726*10} = 682

The value of the account in the year 2009 will be $682.

4 0
3 years ago
Will give brainliest
nalin [4]

Answer:

give me brainliest first

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • 2x + y = 7<br> -x + y = 1
    12·2 answers
  • Find the missing sides in this 30-60-90 right triangle hypotenuse=12 long=?
    8·1 answer
  • What is the value of x in the equation 3x + 11 - 5x + 17 = 0?
    14·1 answer
  • Find the slope and intercepts of the line, 5x-6y=30.
    12·1 answer
  • Liliana is using dark power crystals to raise an army of zombies. Each dark power crystal can raise 12 zombies. How many dark po
    7·1 answer
  • After a birthday party,
    7·1 answer
  • What is the vertex of f(x) = 3|x|
    15·1 answer
  • What is 18k + 30fk in like terms. Will give brainliest to correct answer.
    7·2 answers
  • 15q – 4r = 62<br> 5q + 8r = 86
    12·1 answer
  • Which expression is equivalent to -6x + 7.5?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!