Answers
Answer:
B
Step-by-step explanation:
Simply choose an x coordinate and plug it into the equations from the choices given.
i.e. where x=1
y=2(1)^2 - 4(1)
y= 2-4
y= -2
it can then be seen that where x=1 on the graph, y= -2 aligns perfectly
Answer:
B
Step-by-step explanation:
In y = 2x^2-4x, we put y = 0 to represent the intersection points on the x-axis of the graph. (Since y = 0 is always on the x-axis)
For 2x^2-4x = 0, using the quadratic formula, we get x = 0 and x = 2.
This matches the int. points on the graph.
Related Questions
Write and solve a word problem that requires multiplying two mixed numbers.
Answers
Answer:
Jack ate two and a half pieces of a pie. Amy ate one and three fourth pieces of a pie. How much pie did they eat altogether?
Step-by-step explanation:
Jack ate 2 1/2 pie
Amy ate 1 3/4 pie
2 1/2 + 1 3/4 = 4 1/4
They ate four and one-fourth pieces of pie altogether.
Only 12 people can ride a trolley at one time. This is 20% of the people waiting to ride. How many people are waiting to ride?
Answers
Answer:
2 people are waiting if you want a whole number
explanation:
12=20%(x)
reverse operations
12/.20=x
x=60
Decreasing 3/4 times a number by 18 is equal to increasing 1/2 times the number by 5 give an equation and solution to the situation.
Please help me out on this problem thank you!!!!!!
Answers
Answer:
solved below.Explanation:
[tex]\sf \frac{3}{4} x-18 = \frac{1}{2} x +5[/tex]collect variables:
[tex]\sf \frac{3}{4} x - \frac{1}{2} x = + \ 5 + 18[/tex]simplify:
[tex]\sf \frac{1}{4} x = 23[/tex]final answer:
[tex]\sf x = 92[/tex]HELPPPPPPPPP MEEEEE
According to the general equation for conditional probability, if P(AnB)= 1/6 and P(B)= 7/24, what is P(A|B)?
Answers
Answer:
4/7
Step-by-step explanation:
The conditional probability of A and B happening : P(AnB) is 1/6, and the conditional probability of B happening : P(B) is 7/24, the probability of A happening is 1/6 : 7/24 = 4/7
P(A/B) = Given that B occurs, find the probability of A occuring
An open box with a square base is constructed so that it has a volume of 64in^3. The base needs to be made out of a material that costs twice as much as the sides. What are the dimensions of the box, what are the dimensions of the box x and y (x being the width and depth of the square dimensions, and y being the height of the box) which will minimize the cost of the box?
Answers
The volume of a box is the amount of space in the box
The dimensions that minimize the cost of the box is 4 in by 4 in by 4 in
How to determine the dimensions that minimize the costThe dimensions of the box are:
Width = x
Depth = y
So, the volume (V) is:
[tex]V = x^2y[/tex]
The volume is given as 64 cubic inches.
So, we have:
[tex]x^2y = 64[/tex]
Make y the subject
[tex]y = \frac{64}{x^2}[/tex]
The surface area of the box is calculated as:
[tex]A =x^2 + 4xy[/tex]
The cost is:
[tex]C = 2x^2 + 4xy[/tex] --- the base is twice as expensive as the sides
Substitute [tex]y = \frac{64}{x^2}[/tex]
[tex]C = 2x^2 + 4x * \frac{64}{x^2}[/tex]
[tex]C =2x^2 + \frac{256}{x}[/tex]
Differentiate
[tex]C' =4x - \frac{256}{x^2}[/tex]
Set to 0
[tex]4x - \frac{256}{x^2} = 0[/tex]
Multiply through by x^2
[tex]4x^3 - 256= 0[/tex]
Divide through by 4
[tex]x^3 - 64= 0[/tex]
Add 64 to both sides
[tex]x^3 = 64[/tex]
Take the cube roots of both sides
[tex]x = 4[/tex]
Recall that:
[tex]y = \frac{64}{x^2}[/tex]
So, we have:
[tex]y = \frac{64}{4^2}[/tex]
[tex]y = 4[/tex]
Hence, the dimensions that minimize the cost of the box is 4 in by 4 in by 4 in
Read more about volume at:
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help please! also, explain! thank youuuuuu so much 6th grade math.
Answers
I think this is the answer
how do I do 6 and 6/7 plus 2 and 3/14
Answers
Let me clarify for 6 6/7, you multiply the 7 and 6 to get 42, then the 6 the is above the 7 is added onto 42 to give us 42, we carry our denominator of seven over and get [48/7,]
Then we do 2 3/14, multiply 2 by 14 and add 3, the carry over the denominator of 14, giving us [31/14]
Finally, we multiply 48/7 by 2/2 to give us 96/14 and add that to 31/14, this gives us 127/14 which can be converted into mixed numbers by finding the whole number of times that 14 goes into 127, which is 9, the remainder is 1 so you keep that on the numerator and you get 9 and 1/14
Which is a better deal? Three packs of gum for 5 dollars or 9 packs of gum for 14 dollars? HOW DO YOU KNOW?
Answers
Answer:
9 for 14 is slightly less expensive, but for convenience 3 for 5 is better
Step-by-step explanation:
5/3=1.(6)
14/9=1.(5)
Help with the answer please
Answers
Answer:
A is the answer
Step-by-step explanation:
I hope it helps sorry kung mali
As an apprentice to a chef you are preparing a recipe that says to bake the dish for 3/4 of a hour how many minutes should you bake the dish?
Answers
You should bake the dish for 45 minutes.
Explanation:
So you have 60 minutes in an hour and if you divide that in 4 you get 15. And for the last step you add 15 three times or just multiply 15*3 and get 45.
Hope this helps :D
Patrick collected 192 seashells at the beach.He made five necklaces with an equal number of shells on each necklace.He used the leftover sheets to decorate a magnet.How many shells are on the magnet
Answers
Answer:
I'm going to put the most shells possible on the necklaces this would be 38, 38x5=190, meaning that we have a remainder of 2.
2 shells would be on the magnet
3x - 2 + x + 8 = -(9x + 7
=
- 2(9x + 7 - x + 5)
1 (8x + 12)
4x + 6 =
2
4x + 6 = 4x + 6
4x + 6 = 4x - 6 = 4x + 6 - 4x - 6
0=0
Is this correct?
Answers
Answer:
no
Step-by-step explanation:
3x−2+x+8=−9x−7
4x+6=−9x−7
4x+6+9x=−7
13x+6=−7
13x=−13
x=−1
simplify 2 2/5 x 1 2/5
A. 8/25
B. 84/25
C. 2 4/25
D. 3 9/25
please hurry due in 11 min!!!
Answers
Answer:
84/25
Step-by-step explanation:
What is the surface area?
32 cm
11 cm
15 cm
Answers
Answer:
(rectangular prism) Opposite sides are equal;
Area of bottom base:-
11 x 15 = 165
Above base, (165 x 2) = 330
Area of front:-
15 x 32 = 480
Area of back, (480 x 2) = 960
Area of left side:-
11 x 32 = 352
Area of right side, (352 x 2 ) = 704
Add the sums of all the areas;
330 + 960 + 704 = 1,994 square cm
Small batteries are sold in packs of 8. Mr. Winn bought 4 packs and Mrs. Winn bought 6 packs. Which expressions show how many batteries the Winn family purchased? Select all that apply.
a. 8(4) + 8(6)
b. 8(4) ⋅ 6
c. 6(4 + 8)
d. 8(4) + 6(4)
e. 8(4 + 6)
Answers
What is the exact volume of the cone
Answers
Answer:
V = [tex]\frac{400}{3}[/tex][tex]\pi[/tex]
Step-by-step explanation:
Volume of a cone is:
[tex]V = \pi r^{2} \frac{h}{3}[/tex]
Substitute values given:
[tex]V = \pi (5^{2} )(\frac{16}{3})[/tex]
[tex]V = \pi (25)(\frac{16}{3} )[/tex]
V = [tex]\pi \frac{400}{3}[/tex]
V = [tex]\frac{400}{3}[/tex][tex]\pi[/tex]
Answer the following
Answers
Answer:
14
sorry if i need any.
Step-by-step explanation:
9-8=1 + 13 = 14
Evaluate the expression 6(x) when x equals 3.
Pls... I need help.
Answers
Answer:
18
Step-by-step explanation:
substitute x = 3 into the expression
6x = 6(3) = 6 × 3 = 18
What values of x make 3 - 4x > 17 true?
Answers
Answer: x < -3.5
Step-by-step explanation:
Subtract 3 from both sides and we get
-4x > 14
We divide -4 on both sides, but be careful because we have to flip the sign since it's a negative number.
x < -3.5
Round 385,497 to the nearest thousand.
Answers
Answer:
385,000
Step-by-step explanation:
Solve this, please ...
Answers
Answer: x = 6
Step-by-step explanation:
The midsegment is half of the side it's parallel to.
Therefore 2*(3x-1) = 34
3x-1 = 17
3x = 18
x = 6
Add 2/10 +36/100 =
Write each sum as fraction with a denominator of 100 and as a decimal
Answers
Answer:
56/100 or 0.56
Step-by-step explanation:
you first need the dinominators to be the same so to figure that at you can do 100 divided by 10 which is 10. so to make the doniomators even you need to multipy the 2/10 by 10. so 2x10=20 and 10x10=100 so that makes the fraction 20/100. now you have 20/100 + 36/100 =? which makes it a lot easier. so now all you do is add ONLY THE NUMERATOR so you do 20+36 which is 56 and you keep the 100 and that 56/100.
To make it into a decimal, this one is easy because the denominater is 100 so you just take 56.0 and move the decimal two place values so its 0.56. :)
Can someone please help me with this the last two tutors got it wrong
Answers
Triangular prism: 2 bases and 5 faces
Pentagonal prism: 2 bases and 7 faces
Answer:
I hope this is right
Step-by-step explanation:
A triangular prism has two triangular bases and five faces.
A pentagonal prism has two pentagonal bases and seven faces.
I really hope this is right :)
Need help really please
Answers
Answer:
She will have 7 extra bags.
Step-by-step explanation:
[13(7+6)]/9
(13 * 13)/9
169/9
18.8
9 * 18 = 162
169 - 162 = 7
She will have 7 extra bags.
A hat salesman earns a commission of 15% of all hat sales. Yesterday he
sold 3 hats for $90 each and 4 hats for $50 each. How much did he earn in
commission yesterday?
Answers
Answer:
$70.5
Step-by-step explanation:
Given that,
Total sales=90*3+60*4= 470
So,
Commission 15%
470*.15=$70.50 Ans
The Grand Prismatic Spring in Yellowstone discharges 8,400 gallons of water at a rate of 560 gallons a minute. Using m for minutes, write an equation that represents this situation.
Answers
The equation that represents this situation is 560m = 8400
Equation
An equation is an expression that shows the relationship between two or more variables and numbers.
Let m represent the number of minutes taken to discharge the water. Hence this can be represented by:
560m = 8400
The equation that represents this situation is 560m = 8400
Find out more on Equation at: https://brainly.com/question/2972832
Finding Circumference The radius is cm. v cm OZ The circumference in terms of ais Using 3.14 for A, the approximate circumference of the circle is cm. d=2cm
Answers
Answer:7picm Circumference = pi x d Diameter = 7 C = pi x 7 C = 7pi cm.
Step-by-step explanation:
The circumference of the circle with diameter 2 cm is 6.28 cm.
What is a circle?A circle is a round-shaped figure that has no corners or edges. In geometry, a circle can be defined as a closed, two-dimensional curved shape.
Given that a circle has a diameter of 2 cm we need to find its circumference,
The circumference of a circle is given by, π × diameter
Therefore, the circumference of the circle with diameter 2 cm =
= π × diameter
= π × 2
= 3.14 × 2
= 6.28 cm
Hence, the circumference of the circle with diameter 2 cm is 6.28 cm
Learn more about circles, click;
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Ms. Ashley planned to stay at a hotel that charges $88 per night for a room and $20 per night in fees and taxes. She used this expression to calculate the total cost of staying in the hotel for n nights. 88n 20n
Answers
Step-by-step explanation:
Since 88 is for one night and 20 per night in fees and taxes.
Step 1 : Calculate for $88
[tex] \frac{88n}{88} \\ [/tex]make N the subject of formula
[tex]n = \frac{88}{88} \\ [/tex]
N= 1
Step 2: Calculate for $20
[tex] \frac{20n}{20} \\ [/tex]
make N the subject of formula
[tex]n = \frac{20}{20} [/tex]
N = 1
what is the Estimate 26% of 84.
Answers
Answer: 26% of 84 is 21.84
Step-by-step explanation:
0.26 * 84 = 21.84
Answer:
26%
of
84
=
21
Step-by-step explanation:
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Which measurements of two similar triangles are the same?
Answers
Step-by-step explanation:
Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion .
Answer:
Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion. In other words, similar triangles are the same shape, but not necessarily the same size. The triangles are congruent if, in addition to this, their corresponding sides are of equal length.
Step-by-step explanation:
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