Answer:
false all the quadratic equations cannot be solved by factorising there is also graphical method to get the solution
PLZ HELP DUE IN 3 MINUTES!!!!
Answer:
a1) 65
a2) 25
a3) 45
Step-by-step explanation:
all triangle equal to 180
Answer:
65
25
45
Step-by-step explanation:
1) green triangle 180 - 50 - 65 = 130 - 65 = 65
2) purple triangle 180 - 130 - 25 = 50 - 25 = 25
3) red triangle 180 - 45 - 90 = 90 - 45 = 45
Lucy, Mary and Nora's father leaves them an inheritance in the
ratio 5: 3:2. Mary gets £4500, How much was there in total?
Answer:
£15000
Step-by-step explanation:
Lucy, Mary and Nora's father leaves them an inheritance in the
ratio 5: 3:2. Mary gets £4500, How much was there in total?
Giving the ratio of inheritance 5:3:2
5+3+2 = 10
Mary's ratio = 3
Marys share = £4500
Total share x can be gotten as thus
3/10 × x = 4500
3x/10 = 4500
3x = 45000
x = 45000/3
x = 15000
Hence £15000 was there in total
what is the value of the expression shown below?
8-(-5.5)
A. -13.5
B. -2.5 show work please
C. 2.5
D.13.5
2 of a dozen eggs are cracked. What percent of the carton is NOT cracked using the percent proportion
If 2 of 12 eggs are cracked, then 10 are not cracked.
SO
10/12=5/6=about 0.83
0.83 of total eggs not cracked is also equivalent to 83 percent as asked in the problem :)
Does anyone knows how to do that?
I need to solve for x
Answer:
[tex]x=106[/tex]
Step-by-step explanation:
[tex][Kindly\ find\ the\ attachment\ for\ better\ understanding.]\\We\ are\ given,\\AC\ and\ BD\ are\ two\ parallel\ lines\\\angle CAO=34\\\angle OBD=72\\Lets\ draw\ a\ third\ line\ from\ Point\ O\ parallel\ to\ the\ two\ lines.\\Lets\ denote\ it\ as\ OE.\\\\We\ know\ that,\\'When\ two\ parallel\ lines\ are\ cut\ by\ a\ transversal,\ the\ pairs\ of\ Alternate\\ Interior\ Angles\ formed\ are\ equal'.\\Hence,\\Considering\ parallel\ lines\ AC\ and\ EO,\\\angle CAO=\angle AOE=34\\Similarly,\\[/tex]
[tex]Considering\ parallel\ lines\ EO\ and\ BD,\\\angle EOB = \angle OBD= 72\\Now,\\As\ \angle x\ or \angle AOB=\angle AOE+ \angle EOB,\\\angle x= \angle AOB=34+72=106[/tex]
fill in the blank:543+529=?+530 i need to fill in the blank pls help
PLEASE HELP ASAPPPP!!! 20 POINTS!!
Answer:
105 for all of them
Step-by-step explanation:
1) take 180-75, because of opposite angles.
105
2)again, 105 because we know the opposite angle is 75
3)105
again, opposite angles.
help pls. I have been stuck on this for 15 minutes now.
Answer:
Y=0.35x+18.99
Step-by-step explanation:
Y = total cost
X = number of letters
Answer:
y= 0.35x+18.99
m= 0.35
18.99= 0.35(0)+b
18.99= 0+b
18.99=b
I made 10 cups of granola that we eat in ⅔ cup servings. How many servings will we have out of the 10 cups of granola?
Answer:
15 servings
Step-by-step explanation:
divide the numbers
what is a perpendicular line?
Answer:
lines that intersect
Step-by-step explanation:
Answer:
when two lines meet and form a right angle
Step-by-step explanation:
if you take two segments and cross them to form a 90 degree angle, you'll have four 90 degree angles, known as a perpendicular line.
Please Help! Need to turn this in tonight!!
image attached!
(20×2)20+2)20×2)+20(+41+2=
Answer:
123
Step-by-step explanation:
BODMAS
1.multiply 20 by 2
2.20 ×2
3. 40+22+40+20+43=123
Answer:
123 :)
hope this helped!
3/4 x 6/1
A. 9/4
B. 2 1/4
C. 4 1/2
D. 3 3/5
Answer:
Step-by-step explanation:
A is the answer
Solve the following quadratic inequality. x^2-5x-26>10
x<-4 or x>9
hope this helps
have a good day
find the volume of a sphere and radius is 3. please answer in terms of pi
Answer:
12 pi
Step-by-step explanation:
volume of sphere = 4/3 pi r2
4/3 pi 3 x 3
12 pi unit square
whats i[ in school i know you have to where a mask
If the directions were given to translate a shape (x+7, y-3) describe how the
shape would move.
Answer: move 7 places to the right and 3 places down
Step-by-step explanation:
It costs $525 for seven adult tickets and twelve
youth tickets to the basketball game. If the
difference in price between an adult ticket and
a youth ticket is $18, find the cost of a youth
ticket.
Answer:
Youth ticket = $21
Adult ticket = $39
Step-by-step explanation:
We'll call adult tix x and child tix y. Based on the information given, we can make these two equations:
7x + 12y = 525
x - y = 18
Start by putting x in terms of y with that second equation
x = y + 18
Then substitute that into the first equation:
7(y+18) + 12y = 525
Then solve for y
7y + 126 + 12y = 525
19y = 399
y = 21
If we want the adult price as well, we know
x - 21 = 18
x = 39
Checking the math:
7(39) + 12(21) = 273 + 252 = $525
Write the equation of the line that passes through the points (6,3) and (-7,9). Put
your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.
Answer:
Step-by-step explanation:
slope=(9-3)/(-7-6)=-6/13
reqd eq. of line is
y-3=-6/13(x-6)
Answer:
y-3=-6/13(x-6)
Find the Slope:
A hiking trail rises 6 feet for every horizontal change
of 100 feet. What is the slope of the hiking trail?
Answer: 11.66ft
Step-by-step explanation:
6squared=36+100=136
square root of 136= 11.66ft
I need help with this substitution problem
Answer:
x=5 and y=5
Step-by-step explanation:
I hope this helps
Answer:
x=5 y=5
Step-by-step explanation:
hope this is what ur looking for
Suppose two acid solutions are mixed. One is 26% acid and the other is 34% acid. Which one of the following concentrations cannot possibly be the concentration of the mixture? a) 24% b) 30% c) 31% d) 33%
Answer:
A
Step-by-step explanation:
Donavan received 6 votes for every vote that Karen received it donavan recieved 2136 votes how many votes did Karen receive
Answer:
365
Step-by-step explanation:
2,136 divided by 6
Graph the line with the equation y=-x-4
y=-x-4
Here is the picture of the graph:
PLEASE HELP
A sketch of the graph y = 2x² - 4x – 7 is shown.
Find the values identified as a, b, c, d and e on the sketch.
Answer:
a = (0, -7)
b = (1, 0)
c = (-9, 0)
d = (1 - 3√2 / 2, 0) ≈ (-1.1213, 0)
e = (1 + 3√2 / 2, 0) ≈ (3.1213, 0)
Step-by-step explanation:
----- points d and e ----
d and e we can find by solving for y = 0:
2x² - 4x - 7 = 0
2x² - 4x = 7
x² - 2x = 7/2
x² - 2x + 1 = 9/2
(x - 1)² = 9/2
x - 1 = √(9/2)
x = 1 ± 3√2 / 2
x ≈ 1 ± 2.1213
x ≈ 3.1213, -1.1213
So d is at approximately (-1.1213, 0), and e (3.1213, 0)
--- point a ---
Much easier to do, we simply need to solve for x = 0:
y = 2 × 0² - 4 × 0 - 7
y = -7
So point a is at (0, -7)
--- points b and c ---
We can find these in a couple of interesting ways. We've actually found b already, as it's halfway between points d and e. You'll recall that those are calculated as 1 ± 3√2 / 2, meaning that the midway point between them is just 1.
An alternate way of doing it is to apply some basic calculus, finding the point at which the curve has a slope of zero, which will give us b's x coordinate:
y = 2x² - 4x - 7
dy/dx = 4x - 4
0 = 4x - 4
4x = 4
x = 1
So b is equal to (1, 0).
To find c, we simply plug that x = 1 into the original function:
y = 2x² - 4x - 7
y = 2(1)² - 4(1) - 7
y = 2 - 4 - 7
y = -9
so c lies on (0, -9)
a = (0, -7)
b = (1, 0)
c = (-9, 0)
d = (1 - 3√2 / 2, 0) ≈ (-1.1213, 0)
e = (1 + 3√2 / 2, 0) ≈ (3.1213, 0)
What is co-ordinate geometry?A coordinate system in geometry is a method for determining the precise location of points or other geometrical objects on a manifold, such as Euclidean space, using one or more numbers, or coordinates.
Given
----- points d and e ----
d and e we can find by solving for y = 0:
2x² - 4x - 7 = 0
2x² - 4x = 7
x² - 2x = 7/2
x² - 2x + 1 = 9/2
(x - 1)² = 9/2
x - 1 = √(9/2)
x = 1 ± 3√2 / 2
x ≈ 1 ± 2.1213
x ≈ 3.1213, -1.1213
So d is at approximately (-1.1213, 0), and e (3.1213, 0)
--- point a ---
Much easier to do, we simply need to solve for x = 0:
y = 2 × 0² - 4 × 0 - 7
y = -7
So point a is at (0, -7)
--- points b and c ---
We can find these in a couple of interesting ways. We've actually found b already, as it's halfway between points d and e. You'll recall that those are calculated as 1 ± 3√2 / 2, meaning that the midway point between them is just 1.
An alternate way of doing it is to apply some basic calculus, finding the point at which the curve has a slope of zero, which will give us b's x coordinate:
y = 2x² - 4x - 7
dy/dx = 4x - 4
0 = 4x - 4
4x = 4
x = 1
So b is equal to (1, 0).
To find c, we simply plug that x = 1 into the original function:
y = 2x² - 4x - 7
y = 2(1)² - 4(1) - 7
y = 2 - 4 - 7
y = -9
so c lies on (0, -9)
To learn more about co-ordinate geometry refer to:
https://brainly.com/textbook-solutions/q-use-figure-shown-exercises-14-17-example-14
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Which of the following are terms in this expression? Select all that apply.
a^3+8+c^3
Answer:
a, 3, 8, c
Step-by-step explanation:
This graph shows the distance vs. time relationship for the Lane 1 and Lane 2 turtles. Here are their equations:
Lane 1: d= 6+ 1t
Lane 2: d = 3t
Select all of the true statements.
(Select all that apply.)
1. The Lane 2 turtle is faster than the Lane 1 turtle.
2. At 3 seconds, the turtle in Lane 2 is 12 feet from the start.
3. At 12 seconds, the turtle in Lane 1 is 6 feet from the start.
4. The Lane 1 turtle has a head start.
Answer:
True statements are:
(i) The lane 2 turtle is faster than the lane 1 turtle.
(iv) The lane 1 turtle has a head start.
Step-by-step explanation:
Now we proceed to check the value of truth for each choice:
(i) The lane 2 turtle is faster than the lane 1 turtle.
Speed of the turtle is the slope of the linear function, the greater the slope, the faster the turtle. Hence, the lane 2 turtle is faster than the lane 1 turtle. (Answer: TRUE)
(ii) At 3 seconds, the turtle in Lane 2 is 12 feet from start.
Let the position of the turtle in Lane 2 be represented by [tex]d = 3\cdot t[/tex]. For [tex]t = 3\,s[/tex], then [tex]d = 3\cdot (3) = 9[/tex]. Hence, the turtle in Lane 2 is just 9 feet from the start. (Answer: FALSE)
(iii) At 12 seconds, the turtle in Lane 1 is 6 feet from the start.
Let the position of the turtle in Lane 1 be represented by [tex]d = 6 + t[/tex]. For [tex]t = 12\,s[/tex], then [tex]d = 6+12 = 18[/tex]. Hence, the turtle is 12 feet from the start. (Answer: FALSE)
(iv) The lane 1 turtle has a head start.
According to graph, Lane 1 turtle starts at a position of 6 feet, whereas Lane 2 turtle start at a position of 0 feet. Hence, Lane 1 turtle has a head start. (Answer: TRUE)
The orginal price of a barbecue grill is $ 85.35. The grill is marked down 25%. What is the sale price of the grill?
Hi there!
cost=64.0125
1.Multiply percent with 0.01:
[tex]25[/tex]·[tex]0.01=0.25[/tex]
2.Multiply the cost and term:
[tex]85.35[/tex]·[tex]0.25= 21.3375[/tex]
3.Subtract first term with the decrease of cost:
[tex]85.35-21.3375= 64.0125[/tex]
Therefore, the sale price of the girl is now 64.0125$
I need help please x+6=8+7
Answer:
9
Step-by-step explanation:
8+7=15
15-6=9
Step-by-step explanation:
x+6=8+7
-6 -6 -6
x= 2+1 i think this is the answer
Triangle QRS is rotated 180° about the origin. On a coordinate plane, triangle Q R S has points (negative 4, 1), (negative 4, 4), (2, 1). What are the coordinates of point S'?
Answer:
D. (2, -1)
Step-by-step explanation:
I took the test and got it right.
Triangle QRS is rotated 180° about the origin. On a coordinate plane, triangle Q R S has points (-4, 1), (-4, 4), (2, 1). So, the coordinates of point S will be (2, -1).
How does rotation by 90 degrees changes coordinates of a point if rotation is with respect to origin?Let the point be having coordinates (x,y).
If the point is in first quadrant:
Subcase: Clockwise rotation:
Then (x,y) → (y, -x)
Subcase: Counterclockwise rotation:
Then (x,y) → (-y, x)
If the point is in the second quadrant:
Subcase: Clockwise rotation:
Then (x,y) → (y, -x)
Subcase: Counterclockwise rotation:
Then (x,y) → (-y, x)
Triangle QRS is rotated 180° about the origin.
On a coordinate plane, triangle Q R S has points (-4, 1), (-4, 4), (2, 1).
So, the coordinates of point S will be (2, -1).
Learn more about the rotation of a point with respect to origin here:
https://brainly.com/question/18856342
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