What is the equation of the axis of symmetry of the parabola y=-2x^2+8x-7?
x=.....
Answer:
Equation of axis of symmetry is x = 2
Step-by-step explanation:
The equation of the parabola is given as;
y = -2x² + 8x - 7
The equation of the axis of symmetry is given by;
x = -b/2a
In the parabola equation given and using letters of quadratic equation, we can say that;
a = - 2
b = 8.
c = -7
Thus;
x = -b/2a = -8/(2 × - 2)
x = 8/4
x = 2
Equation of axis of symmetry is x = 2
Please help. Due today.
Answer:
Step-by-step explanation:
Answer:
C
Step-by-step explanation:
because 2^ 3= 16 so you can pull it out.
What is the constant of proportionality of y = 7x?
Answer:
7
Step-by-step explanation:
I did these types of questions for fun in 6th grade
Si al número de grados sexagesimales que contiene un ángulo se le resta 13, y a
un número de grados centesimales se le resta 2, se obtienen dos cantidades en la
relación de 2 a 3. ¿Cuál es la medida circular del ángulo?
Answer:
I am not sure my guy
Step-by-step explanation:
sorry?
TESTTT RNNNNnnnnnn WILL GIVE BRAINLESS
Answer:
iy7tfrdghjuygtfcvbnhjkiuytrfd
Step-by-step explanation:
Please help me solve this I have work and i can't have anything due late ..
Answer:
the answer is C i hope this helps
Step-by-step explanation:
Priya is making burgers for a party. She has 5 pounds of meat and uses 1/3 of a pound for one burger. How many burgers can priya make?
Answer: Priya can make 15 burgers with 5 pounds of meat
Step-by-step explanation:
Step 1
From Priya's receipe,
1 burger can be made from 1/3 of a pound of meat
How many burgers can be made from 5 pound of meat
Step 2 Using the equation below, that
1 burger = 1/3 pound of meat
Therefore 5 pounds of meat
5 x 1 / 1/3 = 5/(1/3)
= 5 x3 = 15 Burgers.
Ann wants to spend at most \$8.50 on school supplies. She needs to purchase a binder ( costs $6.89) and wants to spend the rest on pens, which cost $ 0.59 each. Which inequality represents this situation, where x is the number of pens Ann can buy?
A. 0.59x + 6.89 < 8.50
B. 0.59x + 8.50 < 6.89
C. 6.89x + 0.59 < 8.50
D. 8.50x + 6.89 < 0.59
Please help
Answer:
I think it is A. Sorry if I am wrong
Step-by-step explanation:
James and Sarah went out to lunch. The price of lunch for both of them was $60. They tipped their server
25% of that amount
How much did each person pay if they shared the price of lunch and the tip equally?
Answer:
$37.50
Step-by-step explanation:
$60 x .25 = $15 (tip)
$60 (meal) + $15 (tip) = $75
$75 ÷ 2 (# of people splitting the cost) = $37.50
What does the problem 37( 253,080 equal?
Answer:
so confused like what is this
Step-by-step explanation:
Answer:
9363960
Step-by-step explanation:
The calculator says otherwise -.-
but yeah, hope it helps.
Para abastecer o seu carro com 30 litros de gasóleo a Inês demorou 1 minuto e 40 segundos. Com a mesma mangueira, quanto tempo é necessário para encher um recipiente com a forma de um cone e uma semiesfera com 10 cm de raio e, o cone, com 10 cm de altura?
Answer:
hahdg duchy jejeurur y ed sethi. riruru. udhrhru. ueeh
The basketball team ordered two pizzas. They left 1/3 of one and 1/4 of the other uneaten. What amount of pizza did they have leftover?
Get both 1/3 and 1/4 to the same denominator, with is 12, you also multiply the numerator the same you had to as the denominator.
The answer is 7/12
What is 4x^2+14x+6=9x^2-6x+1 answer
Answer:
20x+5=5x^2
Step-by-step explanation:
For this type of albreic question you want to simplify
4x^2+14x+6=9x^2-6x+1
first you take the common integers(That might not be the right word)
4x^2+14x+6=9x^2-6x+1
+6x -1 -4x^2
20x+5=5x^2
You cannot simplify any further
Mrs. Norton wants to buy health insurance for her family, Plan A costs $620.50 per month. Plan B costs $597.20 per month. How much will she save in 12 months by choosing Plan B instead of
Plan A?
A $7,446.00
B $7,166.40
C $320.60
D $279.60
Answer:
Step-by-step explanation:
620.50 * 12 = 7,446
597.20 * 12 = 7,116.4
7446 - 7116.4 = 329.6
Steve has 1 1/2 cups of flour. One of his recipes requires 1/8 cup of flour. What is the maximum number of times (batches) Steve can complete the recipe? a.2 3/4 b.16 1/2 c.20 or d.17
Answer:
12
Step-by-step explanation:
Hello I am sorry to say but the answer should be 12 as 3/2÷1/8=12
hope it helps you
please mark me as brainlist
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I give brainliest to whoever answers correctly w/ an explanation first
answer the question below
i don’t get it, pls explain
18/20 + 12/20 (simpfiy it )
Answer:
1 [tex]\frac{1}{2}[/tex]
Step-by-step explanation:
Add the numerators and keep the same denominator.
18/20 + 12/20 = 30/20
30/20 = 1 [tex]\frac{1}{2}[/tex]
The cereal box shown below is a rectangular prism. Find the surface area of the cereal box.
Answer:
580 cm^2
Step-by-step explanation:
First, find the area of the front and back. 20*10=200
There are 2 sides with 20*10 ( front and back) so we can multiply by 2. 200*2=400
Then, the sides. 3*20=60*2=120
Then, the top and bottom 10*3=30*2=60
400+120+60=580
Answer:
420
Step-by-step explanation:
60+60+30+30+120+120
hope this helped :)
6(-5x - 16) = 30y + 84
Kaylie bought 3 bags of milk for $14. Each bag had 4 litres of milk. What was the cost of milk per gallon?
Steps:
Answer:
Answer:
about 3 gallons
Step-by-step explanation:
Using the following equation , solve the equation graphically for integral values of x any.
Plot a graph of the equations and shade out the area which is not in the range of values.
1.
[tex]y \geqslant 0 , \\ x - y \geqslant 1 , 3x + 4y < 12[/tex]
Answer:
See the attachedStep-by-step explanation:
y ≥ 0 - limits the region to first and second quadrantsx - y ≥ 1 ⇒ y ≤ x - 1 (region A on the graph)3x + 4y < 12 ⇒ y < - 4/3x + 4 (region B on the graph)Regions covered by each functions are shaded and the intersection also shaded and marked.
The white area in the graph is the out of range region.
Answer:
{(1, 0), (2, 0), (2, 1)}
Step-by-step explanation:
In the attached graph, the dashed lines are to be considered part of the unshaded area, hence in the solution set. The only points with integer coordinates in the solution set are the ones listed above.
can someone please help me with this?!!
and the first choose options are: linear or nonlinear
Answer:
nonlinear
Step-by-step explanation:
It isn't a straight line
A triangle is translated by using the rule (x,y) (x-4,y+1). Which describes how the figure is moved?
Answer:
four units left and one unit up
Step-by-step explanation:
this is because x is always horizontal and y is always vertical
-7X-8 =
What is the answer to -7X-8 =
Answer:
-7x-8=0
-7x=8
x=-8/7
hope this helps
Answer:
The answer for -7 x -8 is 56
Step-by-step explanation:
two negatives equal one positive.
4 (2r + 3 ) = 15r - 11 +1 - 7r
delete this
boop uwu
Answer:
No solutions
Step-by-step explanation:
4(2r + 3) = 15r - 11 + 1 - 7r
Distribute:
8r + 12 = 15r - 11 + 1 - 7r
Combine like terms:
8r + 12 = 8r - 10
Same to both sides:
0r = -22
No solutions
PLZ HELP!!! WILL GIVE HIGHEST POINTS IF THE ANSWER IS RIGHT!!
Step-by-step explanation:
Standard polynomial is:
[tex] - 20 {x}^{3} - 3 {x}^{2} + 4x[/tex]
Leading co effecient is:
-20
help please i’ll give extra points
At a restaurant, the cost for one breakfast taco and one glass of milk is $2.10. The cost for two tacos and three glasses of milk is $5.15.
Write a system of equations to represent this situation. DO NOT SOLVE.
Let x = # of tacos and y = # of glasses of milk.
Answer:
2x+3y=5.15
Step-by-step explanation:
помогите пж а то мне купец я не могу решить умоляю вас
Answer:
hshsjakaihshsksishshsjsiaiqoajsbsiwkajsvjsksjshshs
Solve for x:
(a) 4x - 21 = 5 - 9x
Answer:
X = 2
Step-by-step explanation:
First we'll need to simplify this equation:
Add 9x on both sides:
13x - 21 = 5
Add 21 on both sides:
13x = 26
Divide 26/13
26/13 = 2
X=2
(You can check this yourself by plugging x into the equation)