Answer:
Step-by-step explanation:
You are given GALLONS and MILES
you want to find MILES / GALLON
so just put those numebrs in
MILES / GALLON = 126 miles / 6 gallons = 21 m/g (or 21 MPG)
Answer
Step-by-step explanation
what are the choices TwT
A pair of designer sneakers were purchased for $150. Since they were purchased, their price has increased by 20%. After the increase what would the new ammount for the sneakers?
Answer:
the new price is... i think 180
Step-by-step explanation:
Which of the following is the best thing to do as a first step in using substitution to solve the system of equations?
(3x + y=-3
2x-3y = -13
A. Solve the top equation for x.
B. Solve the top equation for y.
C. Solve the bottom equation for x.
D. Solve the bottom equation for y.
Find the focus and directrix of the parabola y = 1/2(x+1)2 + 4.
C A) Focus: (1,41/2); Directrix: y = 31/2
C B) Focus: (-1,41/2); Directrix: y= 31/2
C C) Focus: (1,31/2); Directrix: y = 41/2
CD) Focus: (-1,31/2); Directrix: y = 41/2
Answer is B! Correct on exam!
Step-by-step explanation:
1. Identify the values for a, h, and k: a= 1/2 h= -1 k= 4. (Remember that the sign of h changes!)
2. Determine vertex: (-1,4)
3. Determine x and y for focus: X= -1 (same as vertex) y= K + 1/4(a)
Substitute what we know into that formula: y= 4 + 1/4(1/2)
y= 4 + 1/2 so y= 4 1/2.
4. Determine directrix: y= k - 1/4(a) ]
Substitute in what we know: y= 4 - 1/4(1/2)
y= 4-1/2 so y= 3 1/2
The focus and directrix of the parabola are (-1, 9/2) and y=7/2 respectively.
The given function is y = 1/2(x+1)² + 4.
We need to find the focus and directrix of the parabola.
What are focus and directrix?A parabola is a set of all points in a plane which are an equal distance away from a given point and given line. The point is called the focus of the parabola and the line is called the directrix. The focus lies on the axis of symmetry of the parabola.
Graph the parabola using the direction, vertex, focus, and axis of symmetry.
Direction: Opens Up
Directrix: Use the vertex form to find the directrix
y=7/2
Focus: Use the vertex form to find the focus.
(-1, 9/2)
Axis of symmetry: x=-1
The coordinates to plot the graph are as follows:
(-3, 6), (-2, 9/2), (-1, 4), (0, 9/2) and (1, 6).
Therefore, the focus and directrix of the parabola are (-1, 9/2) and y=7/2 respectively.
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Rita wants to know the average weight of each apple in
an 8-pound bag of apples. She purchased 5 bags and
found the average apple weight. Using her results, an
apple from an 8-pound bag of apples should weigh
between:
O
O lbs and 0.9 lb.
1.0 lb and 1.2 lbs.
0.8 lb and 1.2 lbs.
O 0.8 lb and 0.9 lb.
Answer:
c
Step-by-step explanation:
because all your doing is picking the smallest and the biggest number and i just got it right .
Answer:C
Step-by-step explanation: 0.8 lb and 1.2 lb
Jada sells ground paprika
Her weekly profit (in dollars) as a function of the amount of paprika she sold that week (in kilograms) is
graphed
What is Jada's profit if she sells 60 kilograms of paprika?
Answer:
If Jada sells 60 kilograms of paprika, her profit would be $200.
Step-by-step explanation:
Note: The missing graph is attached below.
From the graph,
Taking two points
(35, 0) (60, 200)[tex]\mathrm{Slope\:between\:two\:points}:\:\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]\left(x_1,\:y_1\right)=\left(35,\:0\right),\:\left(x_2,\:y_2\right)=\left(60,\:200\right)[/tex]
[tex]m=\frac{200-0}{60-35}[/tex]
[tex]m=8[/tex]
The equation of line in slope-intercept form is
[tex]y=mx+b[/tex]
Putting (60, 200) and m = 8 in the slope-intercept form
[tex]200=\left(60\right)\left(8\right)+b[/tex]
[tex]\left(60\right)\left(8\right)+b=200[/tex]
[tex]480+b=200[/tex]
[tex]\mathrm{Subtract\:}480\mathrm{\:from\:both\:sides}[/tex]
[tex]480+b-480=200-480[/tex]
[tex]b=-280[/tex]
Thus
[tex]y=mx+b[/tex]
[tex]y=8x+\left(-280\right)[/tex]
[tex]y=8x-280[/tex]
Putting x = 60
[tex]y=8\left(60\right)-280[/tex]
[tex]y=200[/tex]
Therefore, if Jada sells 60 kilograms of paprika, her profit would be $200.
Answer:
the answer is 35 kilograms
Step-by-step explanation:
got it from khan academy
What is the correct answer to the equation
Answer:
right answer is 8cm
Step-by-step explanation:
if QM=x
so. Om=32+x
ON=64+16=80
(32+x)/x=80/16
32+x=5x
4x=32
x=8
Which is the reflection line for the transformation
shown?
x-axis
y-axis
x = -2
y = -2
Answer:
y= -2
Step-by-step explanation:
Answer:
y = -2
Step-by-step explanation:
The radius of the base of a metallic rod is 2 centimeters, and its height is 15 centimeters. What is the volume of this cylinder?
A) 60π cm³
B) 50π cm³
C) 27π cm³
D) 36π cm³
Answer:
A) 60π cm³
Step-by-step explanation:
Given:
The radius of the base of a metallic rod is 2 centimetres, and its height is 15 centimetres.
Question asked:
What is the volume of this cylinder?
Solution:
As we know''
[tex]Volume\ of\ cylinder=\pi r^{2} h[/tex]
[tex]=\pi \times2\times2\times15\\ \\ =60\pi[/tex]
Therefore, the volume of this cylinder will be [tex]60\pi\ cm^{3}[/tex]
Answer:
The correct option is option (A)
The volume of the metallic rod is 60π cm³.
Step-by-step explanation:
Cylinder:
It is three dimension shape.The lateral surface area is 2πrh, r= radius, h= heightTotal surface area = 2πrh+2πr²,Volume = πr²h.The radius of the base of metallic rod is 2 cm and its height is 15 cm.
Here r= 2 cm, h= 15 cm, [tex]\pi =\frac{22}7[/tex]
The volume of metallic rod is
=πr²h
=π(2 cm)² (15 cm)
=π(4)(15) cm³
=60π cm³
what unit of measurement do you measure the length of a living room?
Answer:
ft
Step-by-step explanation:
just the most common
area
i would say feet, so it could be like ''the room is 45 feet long'' or something
The calculator shows the result that Luiza got after
evaluating the expression 9 (52+ 18) + 42. She checked
her work by rounding all of the values to the nearest ten and
comparing it to the calculator result. Which is true regarding
her estimate and the accuracy of her calculator result?
1.) The estimated result is 560, which suggests the
calculator is correct.
2.)The estimated result is 740, which suggests the
calculator is incorrect.
3.) The estimated result is 840, which suggests the
calculator is incorrect.
4.) The estimated result is 1,100, which suggests the
calculator is incorrect.
Answer:
Answer 2 is correct, 740
Step-by-step explanation:
The rounded equation would be 10 (50+20) + 40. So if you do the equation then it would be 740
Paula designed a three-dimensional scale model of a department store. The volume of the scale model was 35 cubic feet. The ratio of the dimensions of the model to the dimensions of the store was 1:20. Determine the volume of the actual department store that Paula planned to build
Answer:
700 cubic feet
Step-by-step explanation:
Volume of scale model = 35 cubic feet
ratio of the dimensions of the model to the dimensions of the store was 1:20
Therefore
dimensions of the model/ dimensions of the store = 1/20
we know that in scaling
dimensions of the model/ dimensions of the store = Volume of scale model / volume of the actual department store
Now substituting the value of scale model in the above ratio equation we have
1/20 = 35/volume of the actual department store
=> volume of the actual department store = 35*20 = 700
Therefore volume of the actual department store is 700 cubic feet
How many Starbucks do you think there were in the US in 20152 Make a quick estimate and write it in the box below
Answer:
0
Step-by-step explanation:
Some president will make Russia mad enough to start a nuclear war and the entire planet will be destroyed, let alone Starbucks.
what is -5% as a decimal
-0.5
Answer: -0.5
Step-by-step explanation:
Answer:-0.05
Step-by-step explanation:
The function f(x)f(x) is a quartic function and the zeros of f(x)f(x) are -6−6, -5−5, -2−2 and 11. Assume the leading coefficient of f(x)f(x) is 11. Write the equation of the quartic polynomial in standard form.
[tex]\boxed{f(x) = 11x^4 + 22x^3 - 1001x^2 - 5632x - 7260}[/tex]
Explanation:A quartic function is a function given by the the following equation in standard form:
[tex]f(x)=a_{4}x^4+a_{3}x^3+a_{2}x^2+a_{1}x+a_{0} \\ \\ \\ Where: \\ \\ a_{4},a_{3},a_{2},a_{1},a_{0} \ \text{are constant} \\ \\ \text{and} \ a_{4} \ \text{is the leading coefficient}[/tex]
From the statement we must assume the leading coefficient of f(x) is 11, so:
[tex]a_{4}=11[/tex]
The zeros are:
[tex]x=-6 \\ \\ x=-5 \\ \\ x=-2 \\ \\ x=11[/tex]
So, we can write:
[tex]f(x)=11(x-(-6))(x-(-5))(x-(-2))(x-11) \\ \\ \\ So: \\ \\ \mathrm{Rule}:-\left(-a\right)=a \\ \\ \\ Then: \\ \\ f(x)=11\left(x+6\right)\left(x+5\right)\left(x+2\right)\left(x-11\right)[/tex]
[tex]Expand:\left(x+6\right)\left(x+5\right):\ x^2+11x+30: \ \text{Distributive Property} \\ \\ \\ Then: \\ \\ f(x)=11\left(x^2+11x+30\right)\left(x+2\right)\left(x-11\right) \\ \\ \\ Expand:\left(x^2+11x+30\right)\left(x+2\right):\ x^3+13x^2+52x+60: \ \text{Distributive Property} \\ \\ \\ Then: \\ \\ f(x)=11\left(x^3+13x^2+52x+60\right)\left(x-11\right)[/tex]
[tex]Expand: \left(x^3+13x^2+52x+60\right)\left(x-11\right):\ x^4+2x^3-91x^2-512x-660 \\ (Distributive \ property)[/tex]
Finally:
[tex]f(x) = 11(x^4 + 2x^3 - 91x^2 - 512x - 660) \\ \\ \boxed{f(x) = 11x^4 + 22x^3 - 1001x^2 - 5632x - 7260}[/tex]
Suppose integers a and b are even. Which expression MUST be even?
A) ab + 1
B) a + b + 1
C) 3(ab + 1)
D) 2(ab + 1)
E) a2 + b2 + 1
Answer:
D
Step-by-step explanation:
2 multiplying by any number even or odd=even number
Final answer:
The correct answer is D) 2(ab + 1), because multiplying an odd number (ab + 1) by 2 results in an even number.
Explanation:
The question asks which expression must be even if integers a and b are even. We know that the product of two even numbers is always even. Therefore, ab is even.
When we add 1 to an even number, the result is odd, so ab + 1 is odd. Multiplying by 3, as in option C, won't change the oddness, so 3(ab + 1) is also odd. The expression in option E, a2 + b2 + 1, will be odd for the same reason - the sum of even squares is even, and adding 1 makes it odd.
However, option D multiplies the odd number ab + 1 by 2, guaranteeing that the result is even regardless of the values of a and b since any number multiplied by 2 is even. Thus, the correct answer is D) 2(ab + 1).
Given the sequence in the table below, determine the sigma notation of the sum for term 4 through term 15. n an 1 5 2 −10 3 20
Answer:
The answer to this would be 662.
Step-by-step explanation:
Sigma notation calls for the sum of the terms in the sequence.
Answer:
15
∑ 5(-2)^n-1
n =4
Step-by-step explanation:
15 and n = 4 should be on top (15) and below (n = 4) of the ∑
hope this helps :]
Khan academy use Pythagorean theorem to find isosceles triangle size length
Answer:
I know
Step-by-step explanation:
The length of each equal side of the isosceles triangle Pythagorean theorem is equal to the square root of half the square of the length of the base.
The Pythagorean theorem states that in a right-angled triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides.
To find the length of an isosceles triangle, we need to consider the two equal sides as the legs of a right-angled triangle, and the remaining side as the hypotenuse.
Let's denote the length of the equal sides as "a" and the length of the remaining side (the base) as "b".
According to the Pythagorean theorem, we have:
[tex]a^2 + a^2 = b^2[/tex]
Simplifying this equation, we get:
[tex]2a^2 = b^2[/tex]
To find the length of the equal sides, we can solve for "a" by taking the square root of both sides:
[tex]a = \sqrt{b^2 / 2}[/tex]
Therefore, the length of each equal side of the isosceles triangle Pythagorean theorem is equal to the square root of half the square of the length of the base.
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If a circle with a diameter of 57.75 m is inscribed in a square, what is the probability that a point picked at random in the
square is in the shaded region? Round the answer to the nearest thousandth.
A. 0.005
B. 0.027
C 0.215
D. 0.785
Answer:
The answer is C
Step-by-step explanation:
Answer the question
Answer:
on my screen the picture is blocked just comment on my answer and i will do it for you
Step-by-step explanation:
What parts of the American System are still in effect today
Answer:
Many of the policy tools used by these earlier American systems are obsolete today. But the idea is not. Now, as in the nineteenth and twentieth centuries, national economic development rests on a mutually reinforcing triad of policies to encourage American industry, national infrastructure, and adequate finance.
The principles of economic nationalism, financial stability, and infrastructure development remain influential in modern economic policy.
The American System, also known as the National System or Henry Clay's American System, was an economic plan devised by American statesman Henry Clay in the early 19th century. The plan aimed to promote economic growth and national unity by focusing on three key areas:
Tariff Protection: Clay advocated for high tariffs on imported goods to protect American industries from foreign competition. This policy is still reflected in modern trade agreements, where tariffs are used to balance trade and protect domestic industries.
National Bank: Clay supported the establishment of a strong national bank to regulate the money supply, stabilize the economy, and facilitate commerce. While the specific form of the Second Bank of the United States, which Clay supported, is no longer in existence, the concept of a central bank remains central to modern economic policy.
Internal Improvements: Clay believed in investing in infrastructure projects such as roads, canals, and railroads to improve transportation and connect different regions of the country. This concept is still relevant today, as governments continue to invest in infrastructure to support economic growth and mobility.
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you have a bag containing five purple marbles three yellow marbles to red marbles and four blue marbles you pull one more wall what is the probability that you will pull a yellow marble give your answer in a fraction.
Answer:
3/14
Step-by-step explanation:
5+3+2+4=14....
3 yellow
How much grain can this container hold? Express your
answer in terms of it. It’s a cylinder
4 in.
11 in.
176pie in.3
88pie in.3
44pie in.3
484pie in.3
Answer:
[tex]176\pi in.^3[/tex]
Step-by-step explanation:
The figure of the problem is missing: find it in attachment.
In this problem, the container has a shape of a cylinder.
The volume of a cylinder is given by the formula:
[tex]V=\pi r^2 h[/tex]
where
V is the volume
r is the radius of the base of the cylinder
h is its height
For the container in this problem, we have:
r = 4 in. is the radius of the base
h = 11 in. is the height of the container
Substituting into the formula, we can find the volume of the container, and so the volume of grain that it can contain:
[tex]V=\pi (4)^2 (11)=176\pi in.^3[/tex]
The given cylinder container can hold 44π cubic inches of grain. This is calculated using the formula for the volume of a cylinder which is πr²h.
Explanation:To compute the amount of grain a cylindrical container can hold, you would have to calculate the cylinder's volume. The formula for the volume of a cylinder is πr²h, where r represents the radius, and h represents the height.
In this case, the diameter is 4 inches, so the radius (r) would be 2 inches. The height (h) of the cylinder is 11 inches. So, substituting these values into the formula gives us:
Volume = π(2²) x 11 = 44π cubic inches
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If a raffle has a winning prize of $100 and each ticket costs $5 with a total of 500 tickets sold, which equation would calculate the expected value?
100 (StartFraction 1 Over 500 EndFraction) + (negative 5) (StartFraction 499 Over 500 EndFraction) = E (X)
95 (StartFraction 1 Over 500 EndFraction) + (negative 5) (StartFraction 499 Over 500 EndFraction) = E (X)
(100 minus 5) (StartFraction 1 Over 500 EndFraction) = E (X)
(100) (StartFraction 1 Over 500 EndFraction) = E (X)
Answer:
B
Step-by-step explanation:
It's the right answer
The expected value of the given scenario is -$4.80
What is probability?The probability of an event is a number that indicates how likely the event is to occur. It is expressed as a number in the range from 0 and 1, or, using percentage notation, in the range from 0% to 100%. The more likely it is that the event will occur, the higher its probability.
The expected value refers to the value for a person who decides to purchase one ticket.
And that value is the sum of the values of the different possible scenarios.
There are two scenarios, wining and losing.
Note that we need to subtract the cost of the ticket (i.e. $5) from the return.
Winning :-
Probability 1 out of 500 chances
Return expected: ($100 - $5) *1/500 = $95 * 1/500 = $0.19
Losing :-
Probability 499 out of 500 chances
Return expected: (0 - $5)*499/500 = -$4.99
The expected value is the sum of the two returns: $0.19 - $4.99 = -$4.80 (it is negative).
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If three unbiased coins are tossed, then what is the probability of getting one or more heads is
The odds would be 7/8 that at least one would be a heads.
Step-by-step explanation:To find your answer, see each coin flip as unrelated to the last one.
For the first coin flip, you can either get heads or tails. So, there's only 2 possible outcomes.
Flip 1 (Outcome 1): H or T
Flip 1 (Outcome 2): H or T
But when it comes to the second flip, now each outcome has two possible "sub-outcomes" of their own. So there's now four total outcomes.
Flip 2 (Outcome 1) : H, H
Flip 2 (Outcome 2) : H, T
Flip 2 (Outcome 3) : T, H
Flip 2 (Outcome 4) : T, T
On the third flip, there would now be 8 outcomes. As each "sub-outcome" has own of their own.
Flip 3 (Outcome 1) : H, H, H
Flip 3 (Outcome 2) : H, H, T
Flip 3 (Outcome 3) : H, T, H
Flip 3 (Outcome 4 : H, T, T
Flip 3 (Outcome 5) : T, H, H
Flip 3 (Outcome 6) : T, H, T
Flip 3 (Outcome 7) : T, T, H
Flip 3 (Outcome 8): T, T, T
So all but one of the eight outcomes have at least one heads drawn. Due to this, the odds of an heads happening would be 7/8 within all of the possible outcomes.
8 books cost \$19.60$19.60dollar sign, 19, point, 60.
Which equation would help determine the cost of 101010 books?
Final answer:
The cost of 10 books can be found by dividing the total cost for 8 books ($19.60) by 8 to get the cost per book ($2.45), and then multiplying that by 10 to get the total cost ($24.50).
Explanation:
To determine the cost of 10 books if 8 books cost $19.60, we need to establish the price per book and then multiply that by 10. First, let's calculate the cost per book by dividing the total cost by the number of books:
Cost per book = Total cost ÷ Number of books = $19.60 ÷ 8 books = $2.45 per book
Now, using the cost per book, we can find the total cost for 10 books:
Total cost for 10 books = Cost per book × 10 = $2.45 × 10 = $24.50
Therefore, the equation that would help determine the cost of 10 books is:
Cost = $2.45 × Number of books
In this case, for 10 books, the cost would be:
Cost = $2.45 × 10
tommy likes to run up and down and "up" escalator. Going up, he can cover 30 steps in 6 seconds. Going down, it takes him 15 seconds to cover 30 steps. Find Tommy's rate (in steps per second) if the escalator stopped moving.
Answer:
3 steps per second.
Step-by-step explanation:
Find the Unit Rates of each going up and down:
--> 30/6 unit rate is 5 steps per second.
--> 30/15 unit rate is 2 steps per second.
Now subtract them to get the amount if the elevator wasn't moving:
--> 5-2= 3.
Final answer:
To find Tommy's rate (in steps per second) if the escalator stopped moving, calculate his speed going up and going down, then subtract the speed going down from the speed going up.
Explanation:
To find Tommy's rate (in steps per second) if the escalator stopped moving, we need to calculate his speed when going up and when going down.
When going up, Tommy covers 30 steps in 6 seconds. So his speed going up is 30 steps / 6 seconds = 5 steps per second.
When going down, Tommy covers 30 steps in 15 seconds. So his speed going down is 30 steps / 15 seconds = 2 steps per second.
If the escalator stopped moving, Tommy's rate would be the difference between his speed going up and his speed going down. So his rate would be 5 steps per second - 2 steps per second = 3 steps per second.
A sprinkler head is equidistant from flower garden A and a small shrub B. The sprinkler waters in a
circular pattern. If the length of minor arc AB is 12 feet and the radius of the circle is 10 feet, find the
measure of the central angle subtended by minor arc AB, to the nearest degree.
Answer:
[tex]69^{\circ}[/tex]
Step-by-step explanation:
We are given that
Length of minor arc AB=12 feet
Radius of circle=r=10 feet
Let x be the measure of central angle subtended by minor arc AB.
We know that
Length of an arc=[tex]\frac{Central\;angle}{360}\times 2\pi r[/tex]
Where [tex]\pi=3.14[/tex]
Using the formula
[tex]12=\frac{x}{360}\times 2\times 3.14\times 10[/tex]
[tex]x=\frac{12\times 360}{2\times 3.14\times 10}[/tex]
[tex]x=69^{\circ}[/tex]
Simplify the expression (3x^3 y^-2)^-4
solve -2 | 3x - 6 | + 5 = 1
Answer:
x = [tex]\frac{4}{3}[/tex], x = [tex]\frac{8}{3}[/tex]
Step-by-step explanation:
Given
- 2 | 3x - 6 | + 5 = 1 ( subtract 5 from both sides )
- 2 | 3x - 6 | = - 4 ( divide both sides by - 2 )
| 3x - 6 | = 2
The absolute value function always returns a positive solution, however, the expression inside can be positive or negative, that is
3x - 6 = 2 ( add 6 to both sides )
3x = 8 ( divide both sides by 3 )
x = [tex]\frac{8}{3}[/tex]
OR
- (3x - 6) = 2, that is
- 3x + 6 = 2 ( subtract 6 from both sides )
- 3x = - 4 ( divide both sides by - 3 )
x = [tex]\frac{4}{3}[/tex]
As a check
Substitute these values into the left side of the equation and if equal to the right side then they are the solutions.
x = [tex]\frac{8}{3}[/tex] : - 2| 8 - 6 | + 5 = - 2| 2| + 5 = -2(2) + 5 = - 4 + 5 = 1 = right side
x = [tex]\frac{4}{3}[/tex] : - 2 | 4 - 6| + 5 = - 2| - 2| + 5 = - 2(2) + 5 = - 4 + 5 = 1 = right side
Thus the solutions are x = [tex]\frac{4}{3}[/tex] and x = [tex]\frac{8}{3}[/tex]
Answer:
x = 1⅓, 2⅔
Step-by-step explanation:
-2 | 3x - 6 | + 5 = 1
-2 | 3x - 6 | = 1 - 5
-2 | 3x - 6 | = -4
| 3x - 6 | = 2
3x - 6 = 2
3x = 8
x = 8/3 = 2⅔
3x - 6 = -2
3x = 4
x = 4/3 = 1⅓
?/6=1/2 Will get Brainliest
Answer:
3/6
Step-by-step explanation:
Answer:
3/6=1/2
Step-by-step explanation:
Cross multiply
x/6=1/2
2x=6
Divide by 2 on both sides
x=3
So, 3/6=1/2
Hope this helps! :)