Answer:
y=-2x+21
Step-by-step explanation:
use y2-y1/x2-x1 to find the slope so= -17-3/19-9=-20/10=-2
so once you find the slope take one of the points and plug it into the slope-int equation so... if you take (9,3) and take your slope (-2) so it would be: 3=-2(9)+b solve for b to get 21=b as your int. so.. y=-2x+21
subtract 7x2+4x-9 from 5x2+10x-5
Answer:
2x^2-6x-4
Step-by-step explanation:
(7x2 + 4x - 9)
-(5x2 + 10x - 5)
=
7x^2-5x^2=2x^2
4x-10x=-6x
-9-(-5)=-4
thus, your answer is 2x^2-6x-4
Answer:
41
Step-by-step explanation:
because I did it on a calculator and get it mentally
tell whether each point is on the graph of f(x)=|x|.If it is, give the coordinates of another point with the same y value.
1.(11,11)
2.(-2.3,-2.3)
3.(0,1)
4.(15,-15)
5.(-8,8)
6.(1,0)
The coordinates of that other point are: (5,5) . The x-coordinate gives us the distance of a point from the vertical axis, that is, the y-axis.
What is meant by coordinates?The x-coordinate gives us the distance of a point from the vertical axis, that is, the y-axis. Another name for the x-coordinate is abscissa. The y-coordinate indicates how far a point is from the x-axis, or the horizontal axis. The y-coordinate is also called the ordinate.
Notice that |x| means the absolute value of x. So, the function:
f(x) = IxI
takes x to the number with the same magnitude, but with a positive sign.
Thus,
f(-5) = I - 5I = 5
Therefore, the point (-5,5) is on the graph of f(x).
Now, we need to find another point with a y-value of 5.
Observe the graph of f(x):
Notice that another point with a y-value equal to 5 is (5, 5) because
f(5) = I5I = 5
Hence, the coordinates of that other point are: (5,5).
The complete question is : Tell whether the point (-5,5) is on the graph of f(x) = |x|. If it is, give the coordinates of another point with the same y-value.
To learn more about coordinates refer to:
https://brainly.com/question/11337174
#SPJ2
Consider vectors u and v, where u = (1, -1) and v = (1, 1). What is the measure of the angle between the vectors?
Answer:
I believe the answer is C. 90 degrees
Step-by-step explanation:
First you find the lengths of the two vectors, which are both [tex]\sqrt{2}[/tex]. Then you find the angle given the cos using: cos(∅)=[tex]\frac{u*v}{|u|*|v|}[/tex] = [tex]\frac{0}{\sqrt{2}*\sqrt{2} }[/tex] = 0. Then using ∅=acos(0)=[tex]\frac{\pi }{2}[/tex] = 90°
Answer:
c
Step-by-step explanation:
edge
Professor Walter precisa pintar uma quadra, que tem o formato retangular, cujo comprimento é de 45 m por 38 m. Para isso ele vai comprar baldes de tinta em uma loja de construção. Sabendo que com cada balde de tinta ele conseguirá pintar 72 m² de piso, quantos baldes de tinta ele precisará comprar
Answer:
24 buckets
Step-by-step explanation:
Given that :
Dimension of rectangular block = 45 m by 38 m
A bucket of paint will cover 72m² of floor
Total area of floor : Length * Width
Total Area = (45m * 38m) = 1710 m²
Buckets of paint required :
Total area / Area per bucket
= 1710m² / 72m²
= 23.75 buckets
= 24 buckets
You have 2,112 grams of a radioactive kind of mercury. How much will be left after 188 days if it's half-life is 47 days?
Answer:
132 gStep-by-step explanation:
Initial amount = 2112 gTime = 188 daysHalf-life = 47 days188 days / 47 days = 4 periods
Mercury left after 188 days:
2112 * (1/2)^4 = 2112* 1/16 =2112/16 =132 gHelp needed asap
If 0
Answer:
umm... i need a problem or anything bud
Step-by-step explanation:
Please give the explanation for all three parts. Will provide brainly. No fakes or will get reported. Thanks
Why is ADEC a trapezoid?
A trapezoid is a quadrilateral with one pair of parallel sides. Since D and E are midpoints, it would be parallel to AC. AD and EC are not parallel since they cross each other at point B.
(I couldn't read the last part of the second question :( )
I need help with this 70―10=―10+40
Answer:
I got 90
Please correct me If I am wrong Please and Thank You
Step-by-step explanation:
Combine like terms 70 and 10 which will be 60
and Combine like terms and you get 30
Then you add 60+30= 90
Answer: 60=30
Step-by-step explanation:
70-10= -40=10
60 = 30
Hello' this is my last question can someone please help me
(please don't just put a random answer just to take my points)
*puts a random answer just to take your points*
JK lol sorry
Answer~If we are solving for x, then your answer would be
8x²~x = 0.110
10x~x = 1.140
How i did it~first x:[tex]\frac{10-\sqrt{68} }{16} = \frac{5-\sqrt{17} }{8}[/tex] =0.110
second x:[tex]\frac{10+\sqrt{68} }{16} = \frac{5+\sqrt{17} }{8}[/tex] =1.140
------------------------------------------------------------------------hope I helped :P
Have a good day!!~
Consider the equations: y = 2x − 3 and y = −x + 6.
Solve the system of equations by completing the table of values to find an ordered pair that satisfies both equations.
A) (0, −3)
B) (1, −1)
C) (2, 1)
D) (3, 3)
Answer:
D
Step-by-step explanation:
I got that but hopefully, I'm correct. But I'm 100% sure its d
Billy ate 5/4 pizzas and John ate 5/3 pizzas. How much more pizza did John eat than Billy?
Answer:
Step-by-step explanation:
5/12
Answer:
John ate 5/12 more pizza than Billy
Step-by-step explanation:
[tex]\frac{5x4}{3x4}[/tex]-[tex]\frac{5x3}{4x3}[/tex]
= [tex]\frac{20-15}{12}[/tex]
=[tex]\frac{5}{12}[/tex]
ANSWER WHAT YOU CAN NEED THEM ASAP PLZ
Answer:
1. KJL=55 JLK=55 JKL=70
2. x=12 (you can just plug X in and get the angle measures they will all equal 180 alltogether)
3. x=2
4. x=7
5. 23 degrees
6. i dont remember how to do i sorry
7. 20
8. 45 degrees
9. i dont know
10. 120 degrees
11. cant see the picture
Which of the following statements must be true about this diagram? Check
all that apply
A. W>y
B. y+z=w
C. X+ y = z
D. z>x
E.w>x
F.x+y=w
a system of equations graphed on the grid
which systems of equations does the graph represent
Find the equation of the line that contains the point (-1, -7) and is parallel to the line 4x + 5y = 9. Write the equation in slope-intercept form, if possible.
Answer:
4*1+5*1=9
Step-by-step explanation:
Hope this helps. :)
Find DE
13x-37
2x+13
Answer:
DE = 27
Step-by-step explanation:
From the picture attached,
Points D and E are the midpoints of the segments AC and BC and DE is the mid-segment joining these points.
By the mid-segment theorem,
A segment joining midpoints of the two sides of a triangle is parallel to the third side. length of mid-segment is half of the 3rd side in measure.
DC = [tex]\frac{1}{2}\text{AB}[/tex]
(2x + 13) = [tex]\frac{1}{2}(13x-37)[/tex]
2(2x + 13) = (13x - 37)
4x + 26 = 13x - 37
13x - 4x = 26 + 37
9x = 63
x = 7
DE = 2x + 13
= 2(7) + 13
= 14 + 13
= 27
I need help I don’t understand this :)
Answer:
Answer
Step-by-step explanation:
OK, there are 360 students in the whole school and 15 classes there, too.
Each class has an EVEN amount of students, so simply, all you need to do is divide (360 divided by 15)
Brianna spent $15.00fot 6 two-litter sodas for a football game this weekend. What is the number of soda bottles that could be bought for $55.00
Answer:
22
Step-by-step explanation:
1. Divide $15 by 6 first to get the unit price per bottle.
$15/6= $2.50
2. Now divide the new dollar amount by the unit price.
$55.00/2.50 = 22
What is the slope?
(4,10) (5,13)
I NEED ANSWERS NOW TAKING AN IMPORTANT TEST ILL GIVE AND ONE BRAINLIEST
Which linear function represents the table?
A) y=7x-7
B) y=7x+7
C) y=-7x+7
D) y=-7x-7
MAX is equiangular. m
Answer:
x = 8
Step-by-step explanation:
If equiangular, than all angles are equal
Thus, we have that;
7x + 4 = 12x-36
12x-7x = 36 + 4
5x = 40
x = 40/5
x= 8
What is the answer to 6+(-2)
Answer:
That expression is the same with
6 -2
This equals 4
Hope this helped!
Please do mark as brainliest
can someone plz help me answer this asap
due today plz
8+x−6−5=8x+1−3x
PKS HELP
find the slope of : a(-2,-4) B(2,4)
Answer: undefined
Step-by-step explanation:
Three pounds of bananas weigh $1.89. How much is it for 5 lbs of bananas
Answer:
The correct answer is $3.15
Step-by-step explanation:
To find the answer you do $1.89 divided by 3 to find the unit rate,which is 63 cents. Then you do 5 times 63 cents to equal $3.15.
HAVE A GOOD DAY!
If you were to roll a die one time, what is the probability of it landing on an odd number
Answer:
It's one half.
Step-by-step explanation:
There are six sides on a dice, three of those sides (this is half) have negative numbers. Therefore the probability is 1/2 or 0.5 or a half.
Geometry help, ie: linear, exponential, discrete, continuous
Answer:
Exponentail and Continuous
Step-by-step explanation:
Esponentail because the graph is going up by 3 times the pevous making the line curved, and Continuous because time continuses to pass through the hours. (although if it is only looking at the point on the hour it is descrete).
What is the slope of a line parallel to the line whose equation is 9x-3y=-54
Answer:
21
Step-by-step explanation:
subtract 9 on both sides to make your x axis by itself
y=mx+b
since -3y and -63 will cancel out each other and make a positive when you divide
-3y /63
y=21
also your when the x is alone it is always 1
rise
-------
run
The coordinate points below show part of the data collected by the cell phone company, where x is age in years and y is texting speed in words per minute. (12, 16), (13, 18), (13, 10), (14, 16), (15, 9), (15, 8), (16, 17), (17, 23) If this data was plotted on a scatterplot, would there be a relationship between the variables? If yes, explain the relationship.
Answer:
No, there is no clear relationship between age and texting speed.
Step-by-step explanation:
i already did it
Answer:
D
Step-by-step explanation:
i took the test, and the answer is right
Elena deposits $1,500 in a savings account that earns 3.0% simple interest per year. If no deposits or withdrawals are made during the year, how much money will be in her account after one year?
Answer:
FV= $1,545
Step-by-step explanation:
Giving the following information:
Elena deposits $1,500 in a savings account that earns 3.0% simple interest per year.
To calculate the nominal value of the account after one year, we need to use the following formula:
FV= (P*r*t) + P
FV= future value
P= principal
r= interest rate
t= 1
FV= (1,500*0.03*1) + 1,500
FV= $1,545