Answer:
Step-by-step explanation:
y=mx+b
m=(y2-y1)/((x2-x1)=(2-4)/(3- -1)=-2/4=-.5
y=-.5(3)+b, using point (3,2)
2=-1.5+b
b=3.5
y= -.5x+3.5
In the Seventh grade Rachel read 15 books in the 8th grade she read 19 books what is the percent of change of books read
Answer:
26.67%
Step-by-step explanation:
In the Seventh grade Rachel read 15 books in the 8th grade she read 19 books what is the percent of change of books read
The formula for Percent change =
New value - Original value/Original value × 100
New value = 19 books
Original value = 15 books
= 19 - 15/15 × 100
= 4/15 × 100
= 26.67%
The percent change of book read= 26.67%
1. E = -20,000p + 90,000
R = -2,170p2 + 87,000p
The equations of E and R are illustrations of cost and revenue functions
The equation of the break even point is -20,000p + 90,000 = -2,170p^2 + 87,000p
How to determine the break even pointThe cost and the revenue functions are given as:
E = -20,000p + 90,000
R = -2,170p^2 + 87,000p
At the break even point, we have:
E = R
Substitute known values
-20,000p + 90,000 = -2,170p^2 + 87,000p
Hence, the equation of the break even point is -20,000p + 90,000 = -2,170p^2 + 87,000p
Read more about break even point at:
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I need help with this question.
I’ll mark you as a brainliest.
In this linear equation what is the dependent variable y=2x+4
Answer: y
Step-by-step explanation:
The value of y is dependent on the x value. The x value can be anything you choose and is therefore independent of y.
An airplane is flying at a height of 200m. Its angle of elevation to an observer on the ground is 230. Calculate the distance of the airplane from the observer.
Answer:
Distance between the plane and the observer is 511.86 miles.
Step-by-step explanation:
From the figure attached,
A plane is flying at point A which is at 200 m height and observer is at point C.
Angle of elevation (∠ACB) of the plane from the observer is 23°.
Let the distance between the observer and the plane is x meters.
By applying sine ratio for angle C,
sin(∠C) = [tex]\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex]
sin(23°) = [tex]\frac{200}{x}[/tex]
x = [tex]\frac{200}{\text{sin}(23)}[/tex]
x = 511.86 miles
Therefore, distance between the plane and the observer is 511.86 miles.
A student has 6 nickel 14 dimes and 8 quarter.what is the ratios of the total number of coins to the number of nickels ? In simplest form
Given:
A student has 6 nickel 14 dimes and 8 quarter.
To find:
The ratio of the total number of coins to the number of nickels.
Solution:
We have,
Number of nickels = 6
Number of dimes = 14
Number of quarter = 8
Total number of coins = 6+14+8
= 28
Now, the ratio of the total number of coins to the number of nickels is
[tex]Ratio=\dfrac{\text{Total number of coins}}{\text{Number of nickels}}[/tex]
[tex]Ratio=\dfrac{28}{6}[/tex]
[tex]Ratio=\dfrac{14}{3}[/tex]
[tex]Ratio=14:3[/tex]
Therefore, the ratio of the total number of coins to the number of nickels is 14:3.
please explain i really don’t understand
Answer:
22.5°
Step-by-step explanation:
First we need to figure out the size of the interior angles on the inside.
The formula of figuring out the total degrees of all the interior angles of any shape is (n-2)×180°.
N is the number of sides.
If we substitute our number of sides (8) we get this:
(8-2)×180°
6×180° = 1080°
Then we divide 1080 by 8 since this is a regular octagon (all angles are equal in a regular shape).
1080° ÷ 8 = 135°
Focusing on the triangle now, we now know that the angle on the tip of the triangle is 135° as it has not been split by the line.
Using the rule of angles in a triangle add up to 180°. We do this sum:
180° - 135° = 45°
There are 2 angles left in the triangle so we do:
45° ÷ 2 = 22.5°
Therefore the angle of x is 22.5°.
5,349 divided by 21????????
Answer: 254.714285714 or rounded to 255
Step-by-step explanation:
Have a good day:)
Answer:
254.71
Explanation:
5349 / 21 = 254.71
The difference quotient is used to determine the average rate of change of g(x) = 5x2 + 6x on the interval from x = 1 to x = 5. Which statement describes the process correctly?
Answer:
C. The difference quotient is 10x+5h +6, so the average rate of change is 10(1)+ 5(4) + 6 = 36
Step-by-step explanation:
The statement is the difference quotient is 10x+5h +6.
What is average rate of change of function?It is a measure of how much the function changed per unit, on average, over that interval. It is derived from the slope of the straight line connecting the interval's endpoints on the function's graph.
Given function:
g(x) = 5x² + 6x
interval is x= 1 to x=5
so, the average rate of change is
=10(1)+ 5(4) + 6
= 36
Learn more about average rate of change here:
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480/X - 8 - 480/x = 3
Answer:
i don't know its ans thank you
Answer:
x є ø
Step-by-step explanation:
480/X - 8 - 480/x = 3, x є ø
-8=3 (+480/x -480/x cancels because +smth -the same number)
Hey. Could you help?
Answer:
C
Step-by-step explanation:
sorry, I dont have time for a full explanation. maybe wait for the next person's answer too. just to verify mine.
hope this helps <3
Help please!! I'm trying to solve this question but I can't seem to find the length of one side properly, that said, I'm unable to evaluate the whole question as finding the length of one side seems complicated for me right now.
And if you guys find something wrong with the number, do let me know.
A student solved the equation below by graphing. log Subscript 6 Baseline (x minus 1) = log Subscript 2 Baseline (2 x + 2) Which statement about the graph is true? The curves do not intersect. The curves intersect at one point. The curves intersect at two points. The curves appear to coincide.
Answer:
A.) The curves do not intersect.
Step-by-step explanation:
By looking at the graph, we can see that the curves do not intercept, meaning that the equation has no solutions.
Graphs of logarithmic functions:First, here we have the graph of the lines:
y = log₆(x - 1)y = log₂(2x + 2)Which can be seen at the end of the answer.
In the graph, you can see that the lines never do intercept, this means that the equation:
log₆(x - 1) = log₂(2x + 2)
Has no solutions.
If you want to learn more about graphs, you can read:
https://brainly.com/question/11234618
A state has an average of 40 inches of rain. It is normal divided throughout the 12 months. What is the average amount of rain? Round your answer to the nearest hundredth
Samantha wants to buy a house and plans to rent the apartment located in the basement for extra income. The house has a purchase price of $200,000 and she will make a 10% down payment. Samantha has qualified for a 30 year mortgage with a fixed rate of 5.875%. Approximately how much rent should she charge for the apartment in order to cover her monthly mortgage payment if she only wants to spend $500 a month of her own money?
Answer:
$567.07
Step-by-step explanation:
Given that :
Purchase price = $200,000
Number of years = 30
Rate = 5.875%
Down payment = 10%
Hence, mortgage amount :
Purchase price - down payment
200,000 - (0.1 * 200000)
200,000 - 20,000
= $180,000
Using a mortgage calculator :
Mortgage amount = 180,000
Mortgage term = 30 years
Interest = 5.875%
Monthly payment will be : $1067.07
Hence, if she only wants to $500 from her own money, A rent of ($1067.07 - $500) = $567.07 will need to be charged
Line segment GH has endpoints at G(4,-8) and (-2,6). What is the midpoint of the line segment GH
Answer:
(1,-1)
Step-by-step explanation:
Find the middle between the two points:
4 to -2=6, so the middle would be 3
4-3=1
-8 to 6=14, so the middle would be 7
-8+7=-1
Answer:
[tex]\displaystyle (1,-1)[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Coordinates (x, y)Midpoint Formula: [tex]\displaystyle (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]Step-by-step explanation:
Step 1: Define
Point G(4, -8)
Point H(-2, 6)
Step 2: Find Midpoint
Simply plug in your coordinates into the midpoint formula to find midpoint
Substitute in points [Midpoint Formula]: [tex]\displaystyle (\frac{4-2}{2},\frac{-8+6}{2})[/tex][Fraction] Subtract/Add: [tex]\displaystyle (\frac{2}{2},\frac{-2}{2})[/tex][Fraction] Divide: [tex]\displaystyle (1,-1)[/tex]What is the expanded form of this number?
18.029
Step-by-step explanation:
18.029= (1×10)+(8×1)+(2×1100)+(9×1100)
Thomas has $50 and is saving $8per week. Matt has $150 and is saving $3 per week. At some point, both boys will have the same amount of money. After how many weeks will the bos have the same amount of money? How much money will they have?
Answer:
$210 , 20 weeks
Step-by-step explanation:
[tex]50 + 8x = 150 + 3x \\ 5x = 100 \\ x = 20[/tex]
A cake pan has an 8-inch diameter. To the nearest square inch, what is the area of the bottom of the pan?
a
13 in2
b
25 in2
c
50 in2
d
200 in2
Answer:
50 square inches
Step-by-step explanation:
The pan radius is 4", and so the approximate area of the pan bottom is
A = pi(4 ")^2, or 16 pi, or 50 square inches.
Which type of function are the following equations?
1. ƒ(x) = 4x^2
2. g(x) = 1 - x
Linear, Exponential or Quadric.
(You mau choose a different answer for each equation).
Answer:
1 quadric
2 linear
Step-by-step explanation:
plz make me brainliest
What is the surface area of this shape?
1 cm
5 cm
4 cm
2 cm
6 cm
3 cm
x/3=12; Is 4 a possible value for x?
Answer:
No.
Step-by-step explanation:
4 x 3 is 12. 4 divided by 3 cannot be 12.
Hope it helps!
Answer:
No
Step-by-step explanation:
Not possible
what is 1.22+0.34 pls guys
Step-by-step explanation:
1.22+0.34
= 1.56
Hope it will help :)
Answer:
= 1.56
Step-by-step explanation:
1.22 + 0.34 = ?
00.2 + 0.04 = 0.06
0.2 + 0.3 = 0.5
1 + 0 = 1
1 + 0.5 + 0.06 = 1.56
6. 22 ounce box of Cheerios cost $2.79. A 32 ounce box of Wheaties cost $3.50. Which box is more expensive per ounce? Find cost per ounce.
Answer:
The cheerios are more expensive per ounce
Step-by-step explanation:
6. 22 ounce box of Cheerios cost $2.79---$0.45
A 32 ounce box of Wheaties cost $3.50----$0.11
2.79/6.22 =0.45
3.50/32 = 0.11
What is the square root of m? O m2 O m3 O m4 O m5
Answer:
The correct answer is: (Option B)
Explanation:
Given expression:
Take square-root of the expression:
Evaluate the resultant expression:
Hence the correct answer is option (B) .
Someone help me please...
Step-by-step explanation:
If you dilate a image by a factor of 2 you are multiplying each side by 2.
Side AC = Original AC x 2 = 8 x 2 = 16
Side AB = Original AB x 2 = 15 x 2 = 30
Side BD = Original BD x 2 = 8 x 2 = 16
Side CD = Original CD x 2 = 15 x 2 = 30
what's the answer to n+4.5-0.3n-3
!!!!100 points and brainlist!!!!
Angie is working on solving the exponential equation 23^x=6,; however she is not quite sure where to start. Using complete sentences, describe to Angie how to solve this equation.
And please don’t copy paste this and call it an answer
When you have problems like this you simply ask yourself what number do I have to multiply by 23 to get 6? This is how you might read this mathematical expression. So how do we solve the problem?
Well if x is the number that we have to multiply by 23 to get 6 that means that if we divide 6, 26 times we get x. So, x would be 6/23.
0.26
you would divide 23 on both sides
hope this helps you
..........
Laura has two jobs to help pay for her weekly expenses.
• Laura can work at most 20 hours per week.
She needs to earn at least $120.
• Laura's dog-walking job pays $9.00 per hour.
• Laura washing cars pays $11.00 per hour.
Create the system of inequalities to model Laura's situation where x represents the hours she spends dog-walking
and y represents the hours she spends washing cars.
Answer:
x*$9.00 + y*$11.00 ≥ $120
x + y ≤ 20 hrs
Step-by-step explanation:
we have the variables:
x = hours she spends dog-walking
y = hours she spends washing cars.
We know that she wins $9.00 per hour of dog-waling, and she wins $11.00 per hour of washing cars, then the total amount of money she wins per hour is:
x*$9.00 + y*$11.00
And she needs to earn at least $120, then we have the inequality:
x*$9.00 + y*$11.00 ≥ $120
And we also know that she can work, at most, 20 hours per week, then:
x + y ≤ 20 hrs
Then the system of inequalities that represents this situation is:
x*$9.00 + y*$11.00 ≥ $120
x + y ≤ 20 hrs
Urgent please help..
Answer:
4 in
Step-by-step explanation:
bac=6in2 3*2=6 then 2*2=4in2