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
wariber [46]
3 years ago
7

Ricardo lost 6 golf balls while playing yesterday he bought a box of twelve golf balls and lost 4 on the course today he now has

18 golf balls how many golf balls did Ricardo have to begin with. how do you get the answer
Mathematics
1 answer:
umka2103 [35]3 years ago
8 0
16 balls. 

Let's call x the total number of golf balls that Ricardo had before he lost the first 6 balls. (x - 6).
Then he bought 12 more and lost 4 so basically 12 - 4 = 8
Add that to the equation: (x-6) + 8
And now that he has 18 golf balls at end of the second day the total must add to 18.

Full equation: (x-6) + 8 = 18

(x-6) + 8 = 18
(x-6) = 18 - 8 <-- Transpose
(x-6) = 10
16 - 6 = 10 <-- What would x have to be inoder to make this equation true? 16!
So x = 16

16 is the number of golf balls the Ricardo began with.

You might be interested in
The least squares regression line minimizes the sum of the:
lorasvet [3.4K]

Answer:

d) Squared differences between actual and predicted Y values.

Step-by-step explanation:

Regression is called "least squares" regression line. The line takes the form = a + b*X where a and b are both constants. Value of Y and X is specific value of independent variable.Such formula could be used to generate values of given value X.

For example,

suppose a = 10 and b = 7. If X is 10, then  predicted value for Y of 45 (from 10 + 5*7). It turns out that with any two variables X and Y. In other words, there exists one formula that will produce the best, or most accurate predictions for Y given X. Any other equation would not fit as well and would predict Y with more error. That equation is called the least squares regression equation.

It minimize the squared difference between actual and predicted value.

3 0
3 years ago
Find the area and perimeter of the room.. the vertices are 10,20 -10,20 -10,-10 10,-10
Ierofanga [76]
The numbers in this problem are ordered pairs, which are points on a graph.
These are (10, 20), (-10, 20), (-10, -10), and (10, -10).
To find the area and perimeter of this shape, you must first find the distance between each point.

Distance between (10, 20) and (-10, 20):
Since the y-value remains the same here, we just have to find the difference in x-values.
This means 10 - (-10)
A negative being subtracted is the same as a positive being added.
That means 10 - (-10) is the same as 10 + 10.
10 + 10 = 20, so the distance between (10, 20) and (-10, 20) is 20 units.

Distance between (-10, 20) and (-10, -10):
The x-values are the same here so just find the difference between the y-values.
20 - (-10) = 20 + 10 = 30
The distance between the (-10, 20) and (-10, -10) is 30 units.

Distance between (-10, -10) and (10, -10):
The y-values are the same so just find the difference between the x-values.
10 - (-10) = 10 + 10 = 20
The distance between (-10, -10) and (10, -10) is 20 units.

Distance between (10, -10) and (10, 20):
The x-values are the same so find the difference between the y-values.
20 - (-10) = 20 + 10 = 30
The distance between (10, -10) and (10, 20) is 30 units.

So now we know the side lengths of the room are 20 units, 30 units, 20 units, and 30 units.

To find the perimeter, add all the side lengths together.
20 + 30 + 20 + 30 = 100
The perimeter of the room is 100 units.

To find the area, multiply the length by the width.
The length is 20 units and the width is 30 units.
20 • 30 = 600
The area of the room is 600 units.

Final answers:
Perimeter = 100
Area = 600

Hope this helps!
7 0
3 years ago
Which correlation coefficient represents a moderate negative correlation? r = –0.04 r = –0.24 r = –0.64 r = –0.94
fomenos

The correlation coefficient is a number that indicates the direction

and closeness of points of a line of best of fit.

So it tells us two things.

It tells us the direction of the line of best fit

and it tells us the closeness of the points.

Usually, anything between -0.9 and -0.6 has a moderate negative correlation. If you look at this on a graph, you will notice that the points definitely resemble a line so we say it's moderate.

It will be a negative correlation because the slope is negative.

5 0
3 years ago
Read 2 more answers
Which of the following describes what happens when you change the a value in the equation shown below?
Over [174]
I will say that it is C
7 0
3 years ago
Read 2 more answers
PLEASE HELP Solve |10x + 15| &gt;= 105
yan [13]
|10x + 15| \geq 105\\&#10; 5|2x + 3| \geq 105\\&#10;|2x+3|\geq21\\&#10;2x+3\geq21 \vee 2x+3\leq-21\\&#10;2x\geq 18\vee2x\leq-24\\&#10;x\geq9 \vee x\leq-12\\&#10;x\in(-\infty,-12\rangle\cup\langle9,\infty)
8 0
3 years ago
Other questions:
  • What other information do you need in order to prove the triangles
    12·1 answer
  • In an animal hospital, 10 units of a certain medicine were injected into a dog. After 50 minutes, only 5 units remained in the d
    8·1 answer
  • How do I slice these two problems?
    10·1 answer
  • 1/3(n 4)=9 how do you work this problem out
    11·1 answer
  • Solve the equation. 0.3b = 8.1
    14·1 answer
  • Can someone explain how to write a function with this table, and assist me in writing one?
    6·1 answer
  • Factorize x squared - 1x +10 =0
    15·1 answer
  • 4. What is the slope of a line that is parallel to the line described by 3x + 2y = 8?
    12·1 answer
  • Don't add links please.
    13·2 answers
  • Expand (x-y)^4 “expand each binomial”
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!