Second try PLEASE HELP ME ASAP i always give brainliests and thanks +20 points!
(if you can please explain too how to find the discriminant i am very bad at it)
Answers
Answer:
The discriminant is positive
Step-by-step explanation:
You can find that because on the graph, the top of the curve is on Y and its positive. Its at positive 4 so its positive......sorry im not good at explaning hope this helped.....also you can check google images or videos and it explanes.
Answer:
Positive
Step-by-step explanation:
In order to answer this question, we need to figure out the equation of the quadratic.
We see that the vertex is at (0, 4) and that the points (1, 3) and (2, 0) are on the graph. The generic quadratic is: ax^2 + bx + c, so we can just plug in these three points to find a, b, and c:
4 = 0 + 0 + c ⇒ c = 4
3 = a + b + c = a + b + 4 ⇒ a + b = -1
0 = 4a + 2b + c = 4a + 2b + 4 ⇒ 4a + 2b = -4
We now have two linear equations (a + b = -1 and 4a + 2b = -4) so multiply the first one by 2 and subtract it from the second:
4a + 2b = -4 ⇒ 4a + 2b = -4
- 2(a + b) = (-1) * 2 ⇒ - 2a + 2b = -2
______________ ⇒ ______________
Our difference is 2a = -2, so a = -1. Plug this back in to find b: a + b = -1.
-1 + b = -1
b = 0
So our equation is -x^2 + 4 = 0.
The discriminant is just b^2 - 4ac. Here, it is: 0^2 - 4 * (-1) * (4) = 16.
So the discriminant is positive.
Hope this helps!
Related Questions
Find the slope
Y= -4/3x+2
Answers
Find the slope
Y= -4/3x+2
The slope is -4/3 because that's the number before x.
To find the value of x, do you divide or multiply?? cause this is confusing
Answers
Answer:
divide
Step-by-step explanation:
you know the angle across the green one is 32 too so they together equal 64 and 360 - 64 is 296 so with 296 split between two angles you do 296 / 2 which equals 148
write the quadratic equation y=x to the power of 2 -6x+7
Answers
Answer:
y = x^2 -6x +7
Step-by-step explanation:
You have already written it. All you need to do is use the appropriate symbol for "to the power of". That symbol is the caret (^).
y = x^2 -6x +7
Sally buys a bracelet for $60 and pays 7% sales tax. What is the total amount Sally pays, including tax, for the bracelet?
Answers
Answer:
$64.2
Step-by-step explanation:
After 7% tax, she pays 100+7 = 107% of the cost
107/100 × 60
64.2
How are the volume formulas of prisms and cylinders similar? How are they
different?
Answers
Answer:
They are both similar in the way that the formula is base multiplied by height. They are different because of the type of shape on the base.
Step-by-step explanation:
hope this helps
Austin checks the temperature at 10:00 pm. He notices if the temperature
Falls by 5 more degrees, it will break the record-low temperature for that date,
which is 26 degrees.
If y = the temperature in degrees at 10:00 p.m., which mathematical sentence
expresses the information above?
O A. T-5< 26
O B. T-5 > 26
O C. T+5> 26
O D. T+ 5 < 26
Answers
The correct mathematical sentence to represent the situation where the temperature at 10:00 pm (T), if reduced by 5 degrees, would break the record-low of 26 degrees, is T - 5 < 26, which is Option A.
The mathematical expression that represents the situation where Austin checks the temperature at 10:00 pm, and if it falls by 5 more degrees it will break the record-low temperature for that date, which is 26 degrees. The correct mathematical sentence that expresses this information is:
T - 5 < 26
This is because if the temperature at 10:00 p.m., represented by T, falls by 5 degrees and becomes less (<) than 26 degrees, it would break the record-low temperature.
Therefore, the answer is Option A.
The left and right page numbers of an open book are two consecutive integers whose sum is 295. Find these page numbers.
The two page numbers are IN
(Use a comma to separate answers as needed.)
Answers
Answer:
147, 148
Step-by-step explanation:
295/2=147 remainder 1 so, consecutive means back to back so 147 and 148. Add them up and you get 295.
Final answer:
The consecutive page numbers with a sum of 295 are 147 and 148, with 147 being the left page and 148 being the right page.
Explanation:
To find the consecutive page numbers of an open book with their sum equal to 295, we can set up a simple equation. Let the smaller integer be n, which means the next consecutive integer (the other page number) would be n+1. Since their sum is known to be 295, we set up the equation as n + (n + 1) = 295.
Solving for n gives us:
n + n + 1 = 295
2n + 1 = 295
2n = 294
n = 147
Therefore, the two consecutive integers are 147 and 148. The left page number is 147 and the right page number is 148.
Determine the points for the graph of the relation y = -5x -3 using the x-values given in the table
Answers
Answer:
(-2,7) , (-1,2) , (0,-3) , (1,-8) , (2,-13)
Step-by-step explanation:
For the first one,
y = -5x - 3
We can substitute the x value:
y = -5(-2) - 3
Then just simplify
y = 10 - 3
y = 7
Then you would get the coordinates: (-2,7)
You probably had the same approach but put the numbers in the wrong order. The third option would be correct.
A box of 15 cookies costs $9.
What is the cost for 1 cookie?
Answers
Answer:
9 / 15 = 0.60. 60 Cents. have a good day! :D <3
Please mark brainliest, and I hope this helped!
Step-by-step explanation:
Answer: $0.60
There you go.
da derri purchases 8 foam fingers for $9
Viw
a
1. Jerri purchases 8 foam fingers for $9
each. She then withdrew $8 out of her
checking account and she has $26 left. How much money did she
have to begin with?
Answers
Answer:
26 + 8 = 34
Step-by-step explanation:
because it said he withdrew and that means take money out. so she had 34 at first
need help asap it IS NOT 25
Answers
Base is 5 and the height is 10
Answer: 5x10 = 50 :)
Answer:
50
Step-by-step explanation:
5*10
there are 10 students in a class 7 boys and 3 girls , what is the probability that everyone in the group is a boy
Answers
For the following data set, select the best method for summarizing the data.
3, 3, 4, 5, 2, 9, 5, 2, 3, 4
A) Median
B) Range
C) Outlier
D) Mean
E) Mode
Answers
D
Step-by-step explanation:
the mean is the average of the set of numbers, which makes it perfect for summarizing data.
A triangle with side lengths 12, 14, 18 is...
Answers
Answer: is what
Step-by-step explanation:
Complete the sentence with the correct word.
In the United States, the 401(k) plan or Individual Retirement Account is a defined
plan.
Answers
Answer:
In the United States, the 401(k) plan or Individual Retirement Account is a defined contribution plan.
Step-by-step explanation:
#platofam
Ty you for the answer
Answers
Answer:
The answer would be -5/12
Answer:
The answer is 1/24
Step-by-step explanation:
Hope this Helps!!:)
Would appreciate Brainliest!!:)
1. TRUE OR FALSE and explain. The coordinate pair (-3, 7) is the solution of the system of equations made up
of y = – 3x – 2 and y - 10 = 2/3(x-6).
Answers
Answer:
FALSE, when we plug in the coordinates (-3,7) in the equation, it isn’t true. Therefore, it isn’t the solution.
Step-by-step explanation:
You plug the coordinates (-3,7) in the equation and see if it’s true
Y= -3x-2
7=-3(-3)-2
7=9-2
7=7
Y-10=2/3(x-6)
7-10=2/3((-3)-6)
-3=-7 (FALSE!!!)
Choose the relation that is a function
Answers
Option 2. the circle graphs are not functions when there are two arrows pointing on the same right number
On the Moon, Jim had a weight of 27.5 lbf (27.5 pounds-force).
The force of gravity on the Moon is one sixth of that on Earth. How much did Jim weigh on Earth?
A
4.583 lbf
B 27.5 lbf
C
137.5 lbf
D
165 lbf
Answers
Answer:
Jim had a weigh 165 lbf on Earth.
Step-by-step explanation:
Weight:
The product of mass and acceleration due to gravity.
weight= mass× g
Mass: The amount of material in an object is known as mass of the object.
Mass does not depends on g. Mass of an object remains same.
Given that,
Jim had a weight of 27.5 lbf on the moon.
So,
[tex]mg_m=27 \ lbf[/tex] .......(1)
m = mass of Jim
[tex]g_m[/tex]= acceleration due to gravity on the moon.
Again,
The value of force of gravity on the Moon is one sixth of that on Earth.
[tex]g_m=\frac16 g[/tex]
g = force of gravity on Earth.
Now plug [tex]g_m=\frac16 g[/tex] in equation (1)
[tex]m\times\frac16 g =27 \ lbf[/tex]
[tex]\Rightarrow mg=(27\times 6) \ lbf[/tex]
⇒mg = 165 lbf
Jim had a weigh 165 lbf on Earth.
y = x - 2
y = 3x + 4
Answers
Answer:
How does it need solved? By graphing? Substitution?
Step-by-step explanation:
Answer:
A) y = x - 2
B) y = 3x + 4 multiplying A) by -3
A) -3y = -3x +6 then adding this to B)
B) y = 3x + 4
-2y = 10
y = -5
-5 = x -2
x = -3
Step-by-step explanation:
work out the two possible answers 5 + 3d 2 = 8
Answers
Answer:
d = ±1
Step-by-step explanation:
5 + 3d² = 8
3d² = 3
d² = 1
d = ±1
Can I get brainliest
7. If the perimeter of a square is 14g +28 inches, what is the length, in inches, of each side of
the square?
Answers
Answer:
3.5x+7
Step-by-step explanation:
divide your coeeficients by 4
Social distancing guidelines state that we must stay a minimum of 6ft away from each other. How many circles with a 3ft radius could fill a 100 square foot (10ft x 10ft) space without overlap?
*Tip*
Area of a Circle = π r where r=radius
Answers
Given:
The radius of each small circle = 3 ft
The area of the given space = 100 ft
To find the number of circles could fill the space of 100 ft.
Formula
The area of a circle is
[tex]A = \pi r^{2}[/tex], where r be the radius of the circle.
Now,
Putting, r = 3 and π = 3.14 we get,
[tex]A = (3.14)(3^{2} )[/tex] sq ft
or, [tex]A = 28.26[/tex] sq ft
So, the area of each circle is 28.26 sq ft
Now,
Number of circles that could fill into the given space = 100÷28.26
= 3.53≈3
Hence,
3 circles with radius 3 ft could fill a 100 sq ft space without overlap.
the original plan for mr Harris's house is a rectangle that measures 40ft by 50ft. because of the increase and cost of materials, the square footage is reduced to 1739ft squared. how much will the dimensions be decreased?
Answers
Answer: The dimesions will be decreased by 13.05%.
Step-by-step explanation:
Hi, we have to calculate the original area.
Area of a rectangle = Length x width
Replacing with the values given:
A = 40x50 = 2000 ft2
Since is reduced to 1739. if we multiply the original area by a the percentage decrease, and subtract that value to the original area, we obtain 1739 ft2.
2000 - (2000x) = 1739
Solving for x
-2000x = 1739 -2000
-2000x = -261
x =-261/-2000
x = 0.1305
Multiply by 1000 to obtain the percentage:
0.1305 x 100 = 13.05%
I don’t even know how to answer this lol it’s too early for me. So confused plz help
Answers
Answer:
132
Step-by-step explanation:
Answer:
pie 1 = |=| 3-75+1=u so g4y
that a have a gobayd day i rey dont no
Step-by-step explanation:
if u have a new deck of shuffled cards what is the probability you will choose a black card?
Answers
Answer:
50%
Step-by-step explanation:
There are 4 suits in a deck of cards, hears diamonds clubs and spades
2 are red and 2 are black
This means 1/2 of the cards are black and 1/2 are red
P (black) = black cards / total cards
= 1/2
= 50%
Evaluate x2 + 14 for x = –5.
Question 10 options:
A)
11
B)
39
C)
–39
D)
–11
Answers
Answer:
If that's x^2 + 14,the answer is B. 39
but if it's x2 + 14 | 2x + 14 = 24
Step-by-step explanation:
x^2 + 14
= (-5)^2 + 14
= 25 + 14
=39
x2 + 14 | 2x + 14
=2(-5) + 14
=10 + 14
=24
After substituting x=-5 into the equation x² + 14 and performing the operations, we get the answer as 39.
Explanation:The question asks us to evaluate the expression x² + 14 when x = -5.
Firstly, replace x in the equation with -5. So the equation becomes (-5)² + 14.
Perform the square operation to get 25, and then add the 14. This results in 25 + 14 = 39.
So, when you substitute x = -5 into the expression x² + 14, you get the result 39. Therefore, x² + 14 for x = -5 equals 39.
Learn more about Algebra here:https://brainly.com/question/32436021
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Rico and Halima are shopping for craft sticks, glue, and electrical tape for a science project. Together, they have $30 to spend on supplies. How should they spend their $30 if they need at least 1,000 craft sticks? 275 craft sticks is $4.75 electrical tape is $3.50, large glue is $5.00 small glue is $3.50
Answers
Rico and Halima should spend $17.30 on craft sticks and evenly distribute the remaining $12.70 between large glue, small glue, and electrical tape.
Explanation:To determine how Rico and Halima should spend their $30 on craft sticks, glue, and electrical tape, we need to calculate the cost of each item and ensure they have enough money to buy at least 1,000 craft sticks. Let's break it down:
Craft sticks cost $4.75 for 275 sticks. Hence, the cost per craft stick is $4.75/275 = $0.0173 (rounded to 4 decimal places).If they need at least 1,000 craft sticks, the minimum cost for craft sticks will be 1,000 × $0.0173 = $17.30 (rounded to 2 decimal places).Next, let's consider the cost of the other supplies. Large glue costs $5.00 and small glue costs $3.50. The electrical tape costs $3.50.To determine the remaining amount, they can spend on glue and electrical tape, we subtract the minimum cost of craft sticks from their total budget: $30 - $17.30 = $12.70.
Now we need to decide how much to spend on large glue, small glue, and electrical tape. Since we don't have specific quantities required for each item, let's assume they spend an equal amount on large glue, small glue, and electrical tape.
Therefore, each item can cost $12.70/3 = $4.23 (rounded to 2 decimal places).
Learn more about Calculating expenses for purchasing craft supplies here:https://brainly.com/question/29754702
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Rico and Halima should buy 1,100 craft sticks, two small glues, and one electrical tape for a total of $29.50, staying within their $30 budget.
Here’s a breakdown of how they can spend their money:
Purchase Plan
Craft Sticks: 1,100 craft sticks (4 packs) = 4 x $4.75 = $19.00Large Glue (recommended for better bonding): 2 x $5.00 = $10.00Electrical Tape: 1 x $3.50 = $3.50Total: $19.00 + $10.00 + $3.50 = $32.50
Since $32.50 exceeds their $30 budget, they’ll need to make adjustments:
Craft Sticks: 1,100 craft sticks (4 packs) = 4 x $4.75 = $19.00Small Glue: 2 x $3.50 = $7.00Electrical Tape: 1 x $3.50 = $3.50Total: $19.00 + $7.00 + $3.50 = $29.50 (within budget).
Therefore, Rico and Halima should buy 1,100 craft sticks, two small glues, and one electrical tape for a total of $29.50.
What property does the hour and minute hand of a clock at 3 o’clock show?
A. opposites
B. perpendicularity
C. symmetry
D. parallelism
Answers
Answer:
Hey I think it is C. Symmetry but im no all the way sure
Step-by-step explanation:
Answer:
B. Perpendicularity
Step-by-step explanation:
If you analyze what shows 3 o‘clock, you can see that....
Make a right angle (90 grade angle), that’s is name perpendicular
So that’s why the answer is B
Hope I helped
What is the cube root of 8x^27? 2x^3 2x^9 4x^3 4x^9
Answers
Answer:
2 x^9
Step-by-step explanation:
8x ^27
We want to take the cube root
(8x ^27) ^1/3
We know that (ab)^1/3 = a^1/3 * b^1/3
(8) ^ 1/3 (x ^27) ^1/3
Re writing 8 as 2^3
(2 ^3) ^ 1/3 (x ^27) ^1/3
We know that a^b^c = a^ (b*c)
(2 ^(3* 1/3) *x ^(27 *1/3)
2 ^ 1 * x ^ 9
2 x^9