Answer:
Always true
Step-by-step explanation:
Here, we want to evaluate if the given statement is true
The discriminant D can be calculated using the formula;
b^2 - 4ac
if D is greater than 0, then we will have only real roots
In a case where a and c are of opposite signs;
then -4ac will always give a positive value which can be added to b^2
This positive value will ensure that D is greater than zero and hence we can have only real roots
So this assertion is always true if a and c are of opposite signs
Charlotte and Layla are workers in a factory making widgets. Layla can make 20
widgets per day in the factory. Charlotte is able to produce 10% fewer widgets per day
than Layla. How many widgets can Charlotte make per day?
identify an equation in slope-intercept form the line parallel to y=-3x+7that passes through (2,-4)
Answer:
y=-3x+2
Step-by-step explanation:
Same slope = parallel. You can aso double check this answer by either graphing using the desmos online graphing calculator or by plugging in the point into the equation y = -3(2) + 2 --> y = -6 + 2 --> y = -4, so we are correct.
Answer:
y=-3x+2
Step-by-step explanation:
In this equation the slope is the same as the original equation (-3), but has a different y-intercept meaning that this line is parallel. As for satisfying the requirement that the line is parallel and passes through (2,-4), I plugged the coordinates into the equation y=-3x+b to get -4=-3(2)+b, and then found what b would have to equal to make the equation true.
(plus I put my answer into a graphing calculator to check my work)
Bobs new bike has 26 inch diameter wheels.what is the circumference of the new wheel.Give answer to 1 decimal place
Answer:
The circumference of Bob's new wheel is 81.7 inches
Step-by-step explanation:
Circumference of a circle
The circumference of a circle of radius r is given by:
[tex]C=2\pi r[/tex]
The radius is half the diameter:
r = d / 2 = 26 / 2 = 13
r = 13 inch
Now calculate the circumference:
[tex]C=2\cdot\pi\cdot 13[/tex]
Calculating:
[tex]C=81.7\ inch[/tex]
The circumference of Bob's new wheel is 81.7 inches
What is the slope intercept formula for a vertical line?
Answer:
there isnt one i dont think. since the line never has a slope and rarely a y-intercept would be not way for an equation to be made unless it wa y=mx+b but that just slop intercept form. I dont know if that righ but ig u can try it
Step-by-step explanation:
Brainliest 5 stars and thank you! (correct answers only)
What is the qoutient?
Answer: the answer is the first one
Step-by-step explanation:
Select all equations that have graphs with the same y-intercept.
Answer:
there ar no graphs. Wish i could help. To add a screenshot, select the paperclip icon when posting a question and add the image like that.
If you need to know how to take a screenshot on your device, tell me the brand and name of your device
Example: Brand; Acer, Name; Chromebook
Step-by-step explanation:
given that f(x)= x^2-6x and g(x)= x-8 calculate f•g(-2)
9514 1404 393
Answer:
f•g(-2) = -160
Step-by-step explanation:
f(-2) = (-2)^2 -6(-2) = 4 + 12 = 16
g(-2) = -2 -8 = -10
f•g(-2) = f(-2)•g(-2) = 16•(-10)
f•g(-2) = -160
Answer:
hope this pic helps.enjoy
What is the solution to this system of linear equations?
x + y = 4
x − y = 6
Answer:
x=5 , y= -1
Step-by-step explanation:
You can see that one of the y's is negative while the other is positive, so you can add them together.
Now, negative 1 + positive 1 = 0, so the y's cancel out leaving only the x's.
Remember you can't add one part without adding the other so x+x = 2x, and 4+6=10. This makes the final equation 2x=10.
You can simplify that into x=5. This gives you the answer for x
Then substitute x=5 into any of the two equations (doesn't matter) I'll use the first one. So if you substitute it you get 5+y=4.
Simplified, y= -1
Therefore, x= 5 and y=-1
Answer:
(5,-1)
Step-by-step explanation:
Got it right on edge cause of the guy above me
The question is number 12. URGENT PLEASE
We have an expression in the form
[tex]\frac{f(x+\Delta x)-f(x)}{\Delta x}[/tex]
where the [tex]\Delta x[/tex] term is approaching 0, which is what the "lim" indicates (we're applying a limit).
Note how in [tex]f(x+\Delta x)[/tex], we effectively replace every copy of x with [tex]x+\Delta x[/tex]
Choice D is close, but it's missing the "lim" notation, so it's not 100% accurate.
CAN YOU HELP ME thank you 10pts
9514 1404 393
Answer:
m∠CAB = 62°
m∠CBG = 114°
Step-by-step explanation:
Given:
the above figure
Find:
What are the measures of angles CAB and CBG
Solution:
The total angle at C is 32°+52° = 84°. We know that "remote interior" angles ECB and EBE have a sum that matches angle CEF.
So, angle CBE = 150° -84° = 66°
Angle CBG is the supplement of this, so is ...
m∠CBG = 180° -66° = 114°
That angle is the total of "remote interior" angles BCA and CAB. So angle CAB is ...
m∠CAB = 114° -52° = 62°
n 2+ 7n + 15 = 5 show work
Answer: n2+7n+15−5=5−5
n2+7n+10=0
Step 2: Factor left side of equation.
(n+2)(n+5)=0
Step 3: Set factors equal to 0.
n+2=0 or n+5=0
n=−2 or n=−5
Answer:
n=−2 or n=−5
Step-by-step explanation: hope that helps
Point Q was rotated about the orgin (0,0) by 180
Answer:
Whats the question?..
Step-by-step explanation:
If
M
is the midpoint of AB¯¯¯¯¯¯¯¯
A
B
¯
. If A (4, 0)
A
(
4
,
0
)
and M(2, 1.5)
M
(
2
,
1.5
)
, then find the coordinates of B
B
.
Answer:
this question a little confusing but i think its b= when u multiply
there is a certain number. If you add 30 7 to it, then subtract 22 7 from the previous result, and then subtract that difference from 59/7, after that you will get 19 7. What is a certain number?
Step-by-step explanation:
59 / 7 - ( x + 30 / 7 - 22 / 7 ) = 19 / 7
59 / 7 - ( x + 8 / 7 ) = 19 / 7
59 / 7 - x - 8 / 7 = 19 / 7
- x = 19 / 7 - 59 / 7 + 8 / 7
- x = - 32 / 7
x = 32 / 7
A recipe for Chex mix calls for peanuts, m&ms, and Chex cereal in the ratio of 2:3:5. How many cups of cereal will you need if you use 1.5 cups of M&Ms
Answer:
1 cups of cereal will be needed
Step-by-step explanation:
The ratio is given as;
2:3:5
M&M takes 3 while cereal takes 2
This means the ratio of M&M to cereal is 3:2
So let us look at the ratio of the two
3/2 = 1.5/x
= 2 * 1.5 = 3 * x
3x = 3
x = 3/3
x = 1
Convert 147%, percent to a fraction in simplest form.
Answer:147/100
Step-by-step explanation:Convert the percentage to a fraction by placing the expression over
100
. Percentage means 'out of
100
1 47/100
That would be the answer uwu
I REALLY NEED HELP QUICK!
Answer:
y=1/2x-5
Step-by-step explanation:
From the picture you can see that (0, -5) is a point on the function and that (2, -4) is another point. Using these you can find the slope of the function with the equation
[tex](y_{2} -y_{1})/(x_{2}-x_{1} )[/tex]
We can substitute in the points so it looks like
[tex](-4--5)/(2-0)[/tex] or [tex]1/2[/tex] which is the slope of the function
Now, since the y-intercept is (0, -5) on the graph, the b part in the slope-intercept form of the equation would be -5, leaving us with the equation y=1/2x-5
SOMEBODY HELP ITS 30 POINTS
The distance in miles a car travels over time in minutes is shown in the table.
Distance (miles)
Time (minutes)
10
15
20
30
30
45
40
60
Kwame is not sure whether to use a line graph or a line plot to display the data. Which best explains which graph is a better representation of the data?
The line graph because it shows how the number of miles increases over the number of minutes.
The line graph because the numbers in the data table are equally spaced.
The line plot because numbers can be plotted on a number line.
The line plot because there are only a few data points.
Answer:
The line graph because it shows how the number of miles increases over the number of minutes.
Step-by-step explanation:
ake it or leave it
The best explanation graph is a better representation of the data below: "The line graph because it shows how the number of miles increases over the number of minutes."
What is a graph?A graph can be defined as a visual representation or a diagram that represents data or values.
The distance in miles a car travels over time in minutes is shown in the table.
Distance (miles) Time (minutes)
10 15
20 30
30 45
40 60
A line graph is a good choice for representing data that show a change in value over time. In this case, the value being measured is the distance in miles traveled, and the time is being used as the variable. A line graph is a good choice because it can show the change in distance over time, which is what the data represents.
Hence, the correct answer would be an option (A).
Learn more about the graphs here:
brainly.com/question/16608196
#SPJ2
PLEASE HELP This is solving Exponential and Logarithmic Equations I got the other ones, but I don’t even know what this says to be honest please help.
Answer:
Step-by-step explanation:
We have
[tex]e^\frac{x}{2}^l^n^3 = 5\\[/tex]
[tex]ln(e^\frac{x}{2}^l^n^3) = ln(5)\\\frac{x}{2}ln(3) = ln(5)\\\frac{x}{2} = \frac{ln(5)}{ln(3)} \\x = \frac{2ln(5)}{ln(3)}[/tex]
[tex]x = 2.929947041[/tex]
to the third decimal is 2.930 (i might be wrong on the rounding part)
Solving by substitution y=-7x+6 with 5x+y=2
Answer:
x=1/3,y=3
Step-by-step explanation:
y=7x+6_____equation1
5x+y=2_____equation2
substitute y into equation 2
5x+7x+6=2
12x+6=2
12x=2-6
12x=-4
x= -1/3
substitute X into equation 1
y=7x+6
y=7(-1/3)+6
y=-7/3+6
y=9/3
y=3
3a+6b-a-9b please help!
1(x-31)= 5(2+5)vvvvvb
Answer:
1x-31=35
1x=35+31
1x=66
x=66
A young sumo wrestler decided to go on a special high-protein diet to gain weight rapidly and at a constant rate. After 888 months, he weighed 138138138 kilograms. He started at 909090 kilograms.
Given :
Initial weight of sumo wrestler, I = 90 kg.
Final weight of sumo wrestler, F = 138 kg.
Time taken, T = 8 months.
To Find :
Weight gain per month.
Solution :
Weight gain per month = ( Final weight - Initial weight ) ÷ Total number of month
[tex]W = \dfrac{138-90 }{8}\ kg/month\\\\W = 6 \ kg/month[/tex]
Therefore, weight gain per month is 6 kg/month.
Hence, this is the required solution.
Find the slope of line
Answer:
2/4
Step-by-step explanation:
rise/run
go up (rise) 2, run 4
2/4
From the information in the diagram, what is m PHOTO ABOVE
Answer:
107 degrees
Step-by-step explanation:
i just did it
rica walks to her friend Philip's house. The graph shows Erica's distance from home over time.
Find the rate of change from 1 minute to 2 minutes.
A community center is collecting blankets. The director of the center has asked 135 families to donate 3 blankets each. If 20% of the families donated 3 blankets each, how many blankets did the center collect from these families?
81
27
115
50
Pls pls help
Answer: 81
Step-by-step explanation: 20% of 135= 27, and 27x3=81
Given the points A(-2, 5) and B(2, 3), find the coordinates of the point P on directed line segment AB that partitions AB in the ratio 4 to 1.
Answer:
The answer to your question is: Point (-1/2 , 17/4)
Step-by-step explanation:
Data
A(-2, 5)
B (2, 3)
ratio 3:5 r = 3/5
Formula
Process
x =
x = -1/2 y = 17/4Data
A(-2, 5)
B (2, 3)
ratio 3:5 r = 3/5
Formula
Process
x =
x = -1/2 y = 17/4Data
A(-2, 5)
B (2, 3)
ratio 3:5 r = 3/5
Formula
Process
x =
x = -1/2 y = 17/4Data
A(-2, 5)
B (2, 3)
ratio 3:5 r = 3/5
Formula
Process
x =
x = -1/2 y = 17/4
The coordinates of the point P is (6/5, 17/5).
Given that, the points A(-2, 5) and B(2, 3) and the line segment divided in the ratio 4:1.
What is the section formula?The Section formula is used to find the coordinates of the point that divides a line segment (externally or internally) into some ratio.
The section formula is [tex]P(x,y)=(\frac{mx_{2}+nx_{1} }{m+n}, \frac{my_{2}+ny_{1} }{m+n} )[/tex].
Here, m:n=4:1, (x1, y1)=(-2, 5) and (x2, y2)=(2, 3)
Now, P(x, y) = [tex](\frac{4\times 2+1 \times (-2)}{4+1} , \frac{4\times 3+1 \times 5}{4+1} )[/tex]
=(6/5, 17/5)
Therefore, the coordinates of the point P is (6/5, 17/5).
To learn more about the coordinate geometry visit:
https://brainly.com/question/18269861.
#SPJ2
Solve for z.
3 + 2z = 7
z =
Solve for z.
3 + 2z = 7
z =
Answer: z=2
Step-by-step explanation:
2 x 2 = 4 + 3 = 7
Answer: Okay, the answer is z=2.
Step-by-step explanation: Step 1: Simplify the both sides of the equation: 2z+3=7.
Step. 2: Subtract 3 from the both sides: 2z+3−3=7–3.
Last but not least is step 3. Divide the both sides by 2: 2z/2=4/2. So you get z=2. I hoped my step-by-step explanation formula substitution is very helpful, please mark me as Brainliest, and have a happy holidays!!!!!!! :D
I have like two more I don't understand, I'm in 4th and on my sisters account and I was sick while learning this so I don't know how please help will mark brainliest
1 1/2 x 12
Key: Keep, change, flip.
So 1 1/2 you have to make it into a improper fraction.
1 1/2 to 3/2 x 12/1 = 3/2 x 1/12 = 1/2 x 1/4 = 1/8
Hope this answer helps :)
