Please classify the following equations as parallel, perpendicular, intersecting, or coinciding (same line):
y = 3x + 2
9x - 3y = -6
Answer:
Intersecting
Step-by-step explanation:
Parallel lines means it will have the same slope, and perpendicular means the slope will be it's reciprocal, so the slope would be 1/3 x instead of 9x. Conciding means it's the exact same equation, so the answer has to be intersecting.
2.
Select the correct answer.
What is a unit rate?
A.
a rate with one in the numerator
B.
a rate in which the numerator and the denominator are equal
a rate with one in the denominator
D.
a rate in
the denominator is greater than the numerator
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Please help ASAP please
Answer:
line m
Step-by-step explanation:
Ruth is buying potatoes. Which is the better buy: a 4-pound bag for $2.40 or a 10 pound $5.20? Explain a time when the wiser purchase may not be the better buy
Answer:
The second option (10 for 5.20) and a time that the wiser purchase may not be a better buy is when they live alone. 10 potatoes is not a reasonable amount.
Step-by-step explanation:
On her way to visit Horace Mann University, Casey stopped by Mount Rushmore in South Dakota. The park ranger gave a talk that described the history of the monument and provided some interesting facts. Casey could not believe that the carving of George Washington’s face is 60feet tall from his chin to the top of his head!
However, when a tourist asked about the length of Washington’s nose, the ranger was stumped! Casey came to her rescue by measuring, calculating and getting an answer.
How did Casey get an answer?
Answer:
using a proportion relating nose length to head height
Step-by-step explanation:
Casey measured the nose length, and found the fraction that was of the head height. Then Casey found the same fraction of 60 feet to find the actual nose length.
__
Casey could use a photograph, poster, postcard, or a ruler held at arm's length, to make the necessary measurements.
-9 < -x + 8 < 8 what’s the answer NEED HELP ASAP
Answer:
17>x>0
Step-by-step explanation:
-9<-x+8<8 (equation)
-17<-x<0 (subtract 8 from all parts)
17>x>0 (multiply all by -1)
need help with #20 asap appreciate it
Answer:
The other endpoint would be (-7, -4)
Step-by-step explanation:
Point K is on line segment JL . Given KL =7 and JL = 11, determine the length JK .. JK =
Answer:
Step-by-step explanation:
i think it 5k
Answer:
JK = 4Step-by-step explanation:
Point K on the JL
As per segment addition postulate
JL = JK + KLSubstituting values, to find the value JK
11 = JK + 7JK = 11 - 7 JK = 4What is the significance of a correlation coefficient of -0.97?
A. The points all lie very close to the line of fit, and the
line is decreasing.
B. The points all lie very close to the line of fit, and the
line is increasing.
C. The points do not follow the line of fit and, the line is
decreasing.
D. The points do not follow the line of fit, and the line is
increasing.
Answer:
It's A. The points all lie very close to the line of fit, and the line is decreasing.
Step-by-step explanation:
The points all lie very close to the line of fit, and the line is decreasing option (A) is correct.
What is correlation?It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.
[tex]\rm r = \dfrac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{{[n\sum x^2- (\sum x)^2]}}\sqrt{[n\sum y^2- (\sum y)^2]}}[/tex]
It is given that:
The value of the correlation coefficient r = -0.97
As we know,
If the value of the correlation coefficient is positive it represents the line of best-fit increasing.
If the value of the correlation coefficient is negative it represents the line of best fit decreasing.
If the value of r is close to 1 then we can say that the correlation between the two variables is very strong.
Thus, the points all lie very close to the line of fit, and the line is decreasing option (A) is correct.
Learn more about the correlation here:
brainly.com/question/11705632
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A rocket is launched from a tower. The height of the rocket, why in feet is related to the time after launch, X and seconds, by the given equation. Using this equation find out the time at which the rocket will reach its max, to the nearest 100th of a second y=-16x + 152x + 74
Given:
Consider the height of the rocket, in feet after x seconds of launch is
[tex]y=-16x^2+152x+74[/tex]
To find:
The time at which the rocket will reach its max, to the nearest 100th of a second.
Solution:
We have,
[tex]y=-16x^2+152x+74[/tex]
It is a quadratic polynomial with negative leading coefficient. So, it is a downward parabola.
Vertex of a downward parabola is the point of maxima.
To find the time at which the rocket will reach its max, we need to find the x-coordinate of the vertex.
If a quadratic function is [tex]f(x)=ax^2+bx+c[/tex], then the vertex is
[tex]Vertex=\left(-\dfrac{b}{2a},f\left(-\dfrac{b}{2a}\right)\right)[/tex]
Here, [tex]a=-16,b=152,c=74[/tex].
So,
[tex]-\dfrac{b}{2a}=-\dfrac{152}{2(-16)}[/tex]
[tex]-\dfrac{b}{2a}=-\dfrac{152}{-32}[/tex]
[tex]-\dfrac{b}{2a}=4.75[/tex]
So, x-coordinate of the vertex is 4.75.
Therefore, the rocket will reach its max at 4.75 second.
I dont understand this question
Jasmine had 13 after buying six notebooks.
How much did she start with?
Answer:
7
Step-by-step explanation:
6 + 7 = 13
The equation below represents a situation.
13 – 14x = 38x
Which word problem could the equation represent?
A.) A jar contains 13 dollars worth of one kind of coin. Clara took 14 coins out of the jar. Now, there are 38 coins remaining. What is the value of one of the coins in the jar?
B.) A box contains 38 muffins. Nate sells 14 muffins and makes 13 dollars. How much did Nate charge per muffin?
C.) Over 13 days, Gretchen withdrew 14 dollars from her bank account and deposited 38 dollars. On average, how much money did she deposit each day?
D.) Matthew has 38 pages to read in his textbook, but 14 of the pages are ripped out. It took him 13 minutes to read the pages. How long did he spend on each page?
find the coordinates of the midpoint of each segment formed by the given points.
(2, 4) and (-4,-9)
(-4, 4 ) and (8.5)
Answer:
-1,-2.5 & 0.5,4.5
hope this helps!
Step-by-step explanation:
A school survey showed 18 out of 20 students preferred taking Art. What percent of the students prefer taking Art?
Answer:
90 %
Step-by-step explanation:
18/20*100%
please give me brainly
Answer:
90percent
Step-by-step explanation:
how are liters is 22,500 ml
Answer:
22.5 Liters
Step-by-step explanation:
Use google to convert
Answer:
I GOT U
Step-by-step explanation:
22.5
Teresa purchased a prepaid phone card for $15 . Long distance calls cost 24 cents a minute using this card. Teresa used her card only once to make a long distance call. If the remaining credit on her card is $3.96 , how many minutes did her call last?
Answer:
46 minutes
Step-by-step explanation:
Teresa purchased a prepaid phone for $15
Long distance calls cost 24 cents a minute using this card
She used the card just once to make a long distance call
The remaining credit on her card was $3.96
Therefore the minutes in which her call lasted can be calculated as follows
Let x represent the minutes
15 - 24/100x= 3.96
15-0.24x= 3.96
-0.24x= 3.96-15
-0.24x= -11.04
x= 11.04/0.24
x = 46
Hence Teresa call lasted for 46 minutes
PLEASE HELPWhich line has an equation of Y-5X+4 in slope-intercept form?
a line passing through the points (1, 9) and (3, 19)
a line passing through the points (2, -14) and (4,-24)
a line passing through the points (1, 1) and (3, 11)
a line passing through the points (2. -6) and (4, -16)
Answer:
a line passing through the points (2, -6) and (4, -16)
Step-by-step explanation:
y=-5x+4
you plug in the x value and put the y value on the left side of the equation
for example
-6 = -5(2) + 4
then solve to see if it works
-5(2) = -10 + 4 = -6
(2, -6) works
-16 = -5(4) +4
-5(4) = -20
-20 + 4 = -16
(4, -16) works
Sarah bought a 55-yard bolt of ribbon. If she wants to cut
pieces that are 13-yard long, what is the maximum number of
ribbons she can cut from the bolt?
Answer:
4 ribbons
Step-by-step explanation:
55 divided by 13= 4.23
What is the mean of the following data values?
53, 71, 89, 10, 62
Answer:
Ok so I kind of want you to learn how to do this because its really easy. You add up all of the numbers then you count how many numbers there are and you divide of all of the numbers that you added up and the sum of how many numbers there are for example if I had 34,65, 75, 85, 14, and 23 It would be 34+65+75+85+14+23= 269. There are 6 numbers so 269 divided by 6 and you get 44.8 IF THIS HELPS!!
Step-by-step explanation:
Answer:
53
Step-by-step explanation:
Share 96 sheep in the ratio 7:1:4
Answer:
56:8:48
Step-by-step explanation:
1] add th eratio numbers together
7+1+4=12
2} write the ratio as fractions
7/12 1/12 4/12
3] use the formula (ration number/total number * number of sheeps)
a] 7/12 * 96 = 56
b] 1/12 * 96 = 8
c] 4/12 * 96 = 48
3] write your answer as a ration
7 : 1 : 4 = 56 : 8 : 48
Answer:
The answer is 56 : 8 : 32
Step-by-step explanation:
7 + 1 + 4 = 12
7/12 x 96 = 56
1/2 x 96 = 8
4/12 x 96 = 32
what is the value of a
Step-by-step explanation:
take a pic or something cause I can't see it
Find x: 3x - 14 + 6 - 4 - 2x = 12
Answer:
X = 24
Step-by-step explanation:
Answer:
x = 24
Step-by-step explanation:
3x - 14 + 6 - 4 - 2x = 12
x - 12 = 12
x = 12 + 12
x = 24
Wanda prepared 14 pizzas after working 2 hours. If Wanda prepares
Dizzas at the same rate, how many hours would Wanda have to work
to prepare 42 pizzas?
Answer:
6 hours
Step-by-step explanation:
I hope this helps. Have a good day!
Answer:
6
Step-by-step explanation:
you divide 14 by 2 and get 7 then you add 7's together till they add up to 42 and then you count the 7's
7+7+7+7+7+7=42
Solve –7x + 23 = 37.
Answer:
x = -2
Step-by-step explanation:
-7x + 23 = 37
~Subtract 23 to both sides
-7x = 14
~Divide -7 to both sides
x = -2
Best of Luck!
A sequence is shown below.
32, 26, 20, 14...
Which explicit formula can be used to determine the nth term in the sequence?
a^n =6n+38
a^n= -6n+38
a^n= -6n+32
a^n= 6n+32
Answer:
a^n = -6n + 32
Step-by-step explanation:
32 - 6 = 26
26 - 6 = 32 - 6.2 = 20
20 - 6 = 32 - 6.3 = 14
-> a^n = -6n + 32
The graph shows the absolute value parent function.
Which statement best describes the function?
example of absolute value
F( x )=| x |
Step-by-step explanation:
In mathematics, the absolute value or modulus of a real number x, denoted |x|, is the non-negative value of x without regard to its sign. Namely, |x| = x if x is positive, and |x| = −x if x is negative (in which case −x is positive), and |0| = 0. For example, the absolute value of 3 is 3, and the absolute value of −3 is also 3. The absolute value of a number may be thought of as its distance from zero.
$1.99 for 3 tomatoes
Answer:
$5.97
Step-by-step explanation:
Multiply 1.99 and 3
Write 1/8 as a decimal
Answer:
0.125
Step-by-step explanation:
1/8=0.125
45 + r = 113 +38
Solve equation for 10 points
Answer:
r = 106
Step-by-step explanation:
113 + 38 = 151
151 - 45 = 106
r = 106
