−4x−y+4 when x=−1/4 and y=3 .

Answers

Answer 1

-4(-1/4)-(3)+4
1 - 3 + 4
-2 + 4
2

Related Questions

rewrite 8/9 with a denominator of 63

Answers

To write 9 as 63, you need to multiply it by a number. 63/9 = 7.
So you need to multiply 9 by 7 to get 63.

But since it's a fraction, you can't multiply the denominator without multiply the numerator. So you need to multiply the denominator, 9, by 7 and the numerator, 8, by 7.

8/9 = (8*7) / (9*7) = 56/63

So 8/9 = 56/63

Hope this helps! :)

Final answer:

To rewrite the fraction 8/9 with a denominator of 63, multiply both the numerator and denominator by 7 to get 56/63.

Explanation:

To rewrite 8/9 with a denominator of 63, you need to find a number that you can multiply both the numerator (8) and the denominator (9) of the original fraction by, so that the denominator becomes 63. To do this, divide 63 by the original denominator, 9, which gives you 7. Thus, the number you need to multiply by is 7.

Multiply both the numerator and the denominator by 7:

Numerator: 8 times 7 = 56

Denominator: 9 times 7 = 63

Therefore, the fraction 8/9 with a denominator of 63 is 56/63.

please help me with this problem

Answers

129.95 * 0.55 = 71.4725

71.4725 * .06 = 4.28835

71.4725 + 4.28835 = $75.76

Answer = $75.76

Let c be the curve of intersection of the parabolic cylinder x2 = 2y, and the surface 3z = xy. find the exact length of c from the origin to the point 2, 2, 4 3 . step 1

Answers

Parameterize the curve [tex]C[/tex] by [tex]\mathbf r(t)=\left\langle t,\dfrac{t^2}2,\dfrac{t^3}6\right\rangle[/tex] (essentially replacing [tex]x=t[/tex] and finding equivalent expressions for [tex]y,z[/tex] in terms of [tex]t[/tex].

The length of [tex]C[/tex] is given by the line integral

[tex]\displaystyle\int_C\mathrm dS=\int_{t=0}^{t=2}\|\mathbf r'(t)\|\,\mathrm dt[/tex]
[tex]=\displaystyle\int_0^2\left\|\left\langle1,t,\dfrac{t^2}2\right\rangle\right\|\,\mathrm dt[/tex]
[tex]=\displaystyle\int_0^2\sqrt{1+t^2+\dfrac{t^4}4}\,\mathrm dt[/tex]
[tex]=\displaystyle\frac12\int_0^2\sqrt{4+4t^2+t^4}\,\mathrm dt[/tex]
[tex]=\displaystyle\frac12\int_0^2\sqrt{(t^2+2)^2}\,\mathrm dt[/tex]
[tex]=\displaystyle\frac12\int_0^2(t^2+2)\,\mathrm dt[/tex]
[tex]=\dfrac12\left(\dfrac{t^3}3+2t\right)\bigg|_{t=0}^{t=2}[/tex]
[tex]=\dfrac12\left(\dfrac83+4\right)[/tex]
[tex]=\dfrac{10}3[/tex]

Which equation represents a linear function? A) y – 2 = –5(x – 2) B) x + 7 = –4(x + 8) C) y – 3 = y(x + 4) D) y + 9 = x(x – 1)

Answers

it's (A) y-2=-5(x-2)

i believe its the option A

-3 1/2 * 0.5 help please

Answers

Convert -3 1/2 into an improper fraction. That fraction is -7/2. Mult. this by 1/2.
Result is -7/4 (answer)

Let -3 1/2 = -7/2.

Let 0.5 = 1/2.

(-7/2)(1/2) = -7/4

Done.

The answer because I don’t know it

Answers

What's the highest term that goes into 12x³, 8x², and 12x evenly? If it helps, you can break it up into two questions: what's the greatest common factor between 12 and 8, and what's the greatest common factor between x³, x², and x? Once you have those, multiply the two together, and you'll have the greatest common factor for all three monomials.

Also important to keep in mind: when we say we want to "factor" an expression with more than one term added together, what we really want to do is reverse the distributive property. In case you've forgotten, the distributive property is a property of multiplication that states that if you have three numbers a, b, and c, a(b+c) = ab + ac. You distribute the a to each of the terms in the parentheses. Here, you're given the ab + ac part, and you have to work your way back. To give an example, if we had the expression:

[tex]24x+36[/tex]

We can use the fact that 12 is the greatest common factor of 24x and 36 to rewrite it:

[tex]12(2x)+12(3)[/tex]

And, realizing that 12 has been distributed to the 2x and the 3, reverse the distributive property to get:

[tex]12(2x)+12(3)=12(2x+3)[/tex]

On a town map, each unit of the coordinate plane represents 1 mile. Three branches of a bank are located at A(−3, 1), B(4, 3), and C(2, −1). A bank employee drives from Branch A to Branch B and then drives halfway to Branch C before getting stuck in traffic. What is the minimum total distance the employee may have driven before getting stuck in traffic? Round to the nearest tenth of a mile if necessary.

Answers

distance formula : sqrt ((x2 - x1)^2 + (y2 - y1)^2)
(-3,1)...x1 = -3 and y1 = 1
(4,3)...x2 = 4 and y2 = 3
now we sub
d = sqrt ((4 - (-3)^2 + (3 - 1)^2)
d = sqrt ((4 + 3)^2 + (2^2))
d = sqrt (7^2 + 2^2)
d = sqrt (49 + 4)
d = sqrt 53
d = 7.28 ...so its 7.28 miles from A to B

d = sqrt ((x2 - x1)^2 + (y2 - y1)^2)
(4,3)...x1 = 4 and y1 = 3
(2,-1)...x2 = 2 and y2 = -1
now we sub
d = sqrt ((2 - 4)^2 + (-1 - 3)^2)
d = sqrt (-2^2) + (-4^2)
d = sqrt (4 + 16)
d = sqrt 20
d = 4.47....but the employee only drives halfway....so this trip was 4.47/2 = 2.235

so the minimum total distance is : 7.28 + 2.235 = 9.515 rounds to 9.5 miles

Write the equation of a vertical line containing (5,-8)

Answers

check the picture below.

Which is the solution to the equation 2.6a + 18.4 = 28.8 round the nearest tenth if necessary. 1.4, 4, 18.2, 27

Answers

You would subtract 18.4 from 28.8 then divide that answer by 2.6. The answer would therefor be 4.

Answer:

Your answer is B=4

Step-by-step explanation:

hope it helps once again

A total of 29,183 votes were casted I’m an election. The winning candidate in the election received 61.3% of the votes. Which of the following is closest to the number of votes received by the winning candidate

Answers

61.3/100 × 29183
the Winning candidate had an approx of 17889 votes or 17890

Multiply 29183 votes by 0.613 and then round off to the nearest integer number of votes:

0.613(29183) = 17889.179, which must be rounded off to 17,889 votes.

Evaluate 4x-3 when x=_3

Answers

Final answer:

To evaluate the expression 4x-3 for x = -3, we substitute -3 into the expression and follow the order of operations, resulting in a value of -15.

Explanation:

To evaluate the expression 4x-3 when x is -3, we simply substitute -3 in place of x and calculate the result as follows:

Replace x with -3: 4(-3) - 3.Multiply 4 by -3: -12 - 3.Finally, subtract 3 from -12 to get: -15.

Therefore, evaluating 4x-3 when x is -3 gives us -15.

A single 6-sided die is rolled twice. find the probability of getting a 55 the first time and a 11 the second time. express the probability as a simplified fraction.

Answers

They are independent events therefore they will not affect each other so rolling a certain number will always be 1/6.

1/6 x 1/6 x 1/6 x 1/6 = 1/1296

Write ratio in simplest form

6:3/5

Answers

you cdan simplify the ratio 6:3 by dividing both terms GCF ( greatest common factor) divide both terms by three 6 divided by 3 is 2 . 3 divided by 3 is 1. so 6:3 is 2:1

What is the unit rate 3 for $5 4 for$6

Answers

The unit rate for 3 for $5 is around $1.70 or $1.60

The unit rate for 4 for $6 is $1.50

You have two separate problems here.

a) 3 for $5 needs to be expressed as cost per unit. Write $5/(3 units), and then simplify. Here the unit rate is ($5/3) / unit, or $1.67 per unit.

b) 4 for $6: Write $6/(4 units), and then reduce to lowest terms:
(6/4) dollars per unit, or $1.50/unit

Find the volume of the solid whose base is the circle x^2+y^2=81 and the cross sections perpendicular to the x-axis are triangles whose height and base are equal.

Find the area of the vertical cross section A at the level x=6.

Answers

Sent a picture of the solution to the problem (s). Just rotate pic.

The volume of the cone will be 1526.8 cubic units. The area of the vertical cross-section A at level x = 6 will be 72 square units.

What is Geometry?

It deals with the size of geometry, region, and density of the different forms both 2D and 3D.

The equation of the base circle is given below.

x² + y² = 81

x² + y² = 9²

Then the radius of the circle is 9 units. Then the height of the cone is the same as the diameter of the circle.

h = 2r

h = 2 x 9 = 18

The volume of the cone will be

V = (1/3)πr²h

V = (1/3) × π × 9² × 18

V = 1526.8 cubic units

The area of the vertical cross-section A at the level x = 6 will be

A = (1/2) x (18 - 6) x (18 - 6)

A = (1/2) x 12²

A = (1/2) x 144

A = 72 square units

More about the geometry link is given below.

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The Red Sox have won 3 World Series titles in the last 11 years. At this rate, how long will it take them to win 20 World Series?

Answers

The answer is 74 years. do 11/3=3.67. Then 3.67x20 =73.4 and since that .4 is not a full year you would have to round up to 74

73 1/3 years
What I did was use a proportion:

11/3 and x/20
Then you cross multiply:

3x=220
Then solve.

A 1950 kg car moves with a velocity of 11 m/s. What is its kinetic energy? Joules

Answers

The formula for Kinetic Energy is given by

KE = 0.5 × mv²

We have:
m, the mass = 1950 kg
v, the velocity = 11 m/s

KE = 0.5 × 1950 × 11²
KE = 117975 joules

which is the smallest number? 3/4,1/5,10/23,2/31

Answers

A quick and easy way to do this particular question is to think all of these numbers are close to 1/2 except 2/31. So, the lowest is 2/31.

H O P E T H I S H E L P S!

3333333333333333333333

Assume that the distance from Earth to the moon is exactly 238,855 miles and that it took astronauts 75 hours to reach the moon in 1969. How far did the astronauts travel each hour, on average, during their trip to the moon? 3,004.73 miles mc026-1.jpg miles 3,317.4305 miles mc026-2.jpg miles

Answers

you would do 238855 divided by 75 ===3184.73333 mph

On average during their trip, their speed was 3184.8 miles/hr.

What is a unitary method?

A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.

We know Distance = Speed×Time.

∴ Speed = Distance/Time.

Given, The distance from Earth to the moon is exactly 238,855 miles and it took astronauts 75 hours.

So, the average speed is (238855/75) miles/hr.

= 3184.8 miles/hr.

learn more about unitary method here :

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Devin brought his snails collection to school. He has 10 snails. How could he put them into 2 tanks so two classes could see them?
Write equation for all the possible ways.
One of the ways is given.
Explain how you know you have found all the ways.

Answers

10 divided by 2 = 5 is one of the equations

3. Find the scale factor using the given scale drawings and measurement below

Answers

Final answer:

The question asks to find the scale factor for given scale drawings and measurements. A scale factor is computed by creating a ratio comparing the measurement of the scale drawing to the actual measurement, simplifying that ratio to find the scale factor.

Explanation:

The subject of the question is concerned with finding the scale factor from a given scale drawing and measurements. In mathematics, particularly in geometry, a scale factor is used to transform the size of a figure without altering its shape.

Step-by-Step Explanation

To find the scale factor for each given scale drawing, you will need to create a ratio or a fraction that compares the scale measurement to the actual measurement. Here’s how you might solve one of the problems:

Example: What is the scale factor if 3 inches is equal to 12 feet?

Solution:

Convert all measurements to the same unit, for instance, turn feet into inches (1 foot = 12 inches).Write the ratio of the scale drawing to the actual measurement.Reduce the ratio to its simplest form to find the scale factor.

Given the equation D =m/v if D=2/3 and v=m+1., then m=
-3
2
1

Answers

D = m/v D = 2/3 v = m + 1

2/3 = m/m + 1

2/3(m + 1) = m

2(m + 1)/ 3 = m

2(m + 1) = 3m

2m + 2 = 3m

2 = 3m - 2m

2 = m

m = 2

hope that helps, God bless!

The value V of a square glass varies directly as the square of its length X cm. If the value of a square glass with length 3 cm is $243, find the value of a glass with length 5 cm

Answers

Given that the value V of a square glass varies directly as the square of its length X cm.

Then, the variation equation is given by

[tex]V\propto X^2 \\ \\ \Rightarrow V=kX^2[/tex]

Given that value of a square glass with length 3 cm is $243, we have:

[tex]243=k(3)^2=9k \\ \\ \Rightarrow k= \frac{243}{9} =27 \\ \\ \Rightarrow V=27X^2[/tex]

Thus, the value of a glass with length 5 cm is

[tex]V=27(5)^2=27\times25=\bold{\$675} [/tex]

The value V of a square glass varies directly as the square of its length X cm. This means that V is proportional to [tex]X^2[/tex], which can be expressed as:

[tex]\[ V = kX^2 \][/tex]

where k is the constant of proportionality.

Given that the value of a square glass with length 3 cm is $243, we can use this information to find the constant k:

[tex]\[ 243 = k(3)^2 \][/tex]

[tex]\[ 243 = 9k \][/tex]

[tex]\[ k = \frac{243}{9} \][/tex]

[tex]\[ k = 27 \][/tex]

Now that we have the value of k, we can find the value of a glass with length 5 cm by substituting X = 5 into the original equation:

[tex]\[ V = 27(5)^2 \][/tex]

[tex]\[ V = 27 \times 25 \][/tex]

[tex]\[ V = 675 \][/tex]

Therefore, the value of a glass with length 5 cm is $675.

The answer is: 675.

The sum of the square of two consecutive whole number is 25. Find the numbers

Answers

Don't you mean "the sum of the squares ..."?
The sum of the squares of two consecutive whole numbers is 25. Find the numbers. Let the first be represented by x and the second by x+1.
Then x^2+(x+1)^2=25. Expanding, x^2+x^2+2x+1=25.
Rewriting this as a quadratic equation in standard form,

2x^2+2x+1=25, or 2x^2+2x-24=0. Simplifying, x^2+x-12=0.
Factoring, (x-3)(x+4)=0. Solving for x: x-3=0, so x=3; x+4=0, so x=-4.
Choose the positive x value: x=3. Then the next consecutive number is 2+1=3+1=4.

Check: Does 3^2 + 4^2 = 5^2 = 25? Yes.
The numbers are 3 and 4.

If the circumference of a circle is 201 centimeters what is the radius of the circle (to the nearest whole number)? Use 3.14 for pi

A) 32 centimeters
B) 128 centimeters
C) none
D) 16 centimeters
E) 64 centimeters

Answers

Final answer:

The radius of a circle with a circumference of 201 centimeters is approximately 32 centimeters, found by dividing the circumference by 2 times pi (π), using 3.14 as the value of pi. The correct answer is A) 32 centimeters.

Explanation:

The question asks us to find the radius of a circle when its circumference is given to be 201 centimeters. We use the circumference formula of a circle, which is C = 2πr, where C stands for circumference, π (pi) is a constant approximately equal to 3.14, and r represents the radius of the circle.

To find the radius, we rearrange this formula to solve for r:

Divide both sides of the equation by 2π to isolate r.

Plug in the given circumference value, C = 201 cm, and the approximate value of pi, π = 3.14, into the rearranged formula.

So the calculation would be r = C / (2π) = 201 / (2 * 3.14) = 201 / 6.28. When we compute this, we get r ≈ 32 centimeters to the nearest whole number.

Therefore, the correct answer is A) 32 centimeters.

which of the following shows a strategy to use to find 4x275 (4x300)+(4x25)
(4x300)-(4x25) (4x275)-100 (4x200)+75

Answers

[tex]4*275 (4x^3^0^0)+(4x^2^5) (4x^3^0^0)-(4x^2^5) (4x^2^7^5)-100 (4x^2^0^0)+75[/tex]

The correct strategy is (4x275) - 100. So option (3) is correct.

To find 4 multiplied by 275 using the given strategies, let's go through each one:

1. (4x300) + (4x25):

First, calculate (4x300) = 1200. Then, calculate (4x25) = 100. Finally, add these results together: 1200 + 100 = 1300.

2. (4x300) - (4x25):

Calculate (4x300) = 1200. Then, calculate (4x25) = 100. Now, subtract the second result from the first: 1200 - 100 = 1100.

3. (4x275) - 100:

Simply multiply 4 by 275 to get 1100. Then, subtract 100: 1100 - 100 = 1000.

4. (4x200) + 75:

Calculate (4x200) = 800. Then, add 75: 800 + 75 = 875.

The correct strategy is the third one: (4x275) - 100.

Detailed Calculation:

1. [tex]$4 \times 275 = 1100$[/tex]

2. [tex]$1100 - 100 = 1000$[/tex]

So, using the strategy of (4x275) - 100, the result is 1000.

If a project is handed in late you receive 8/9 of your earned points. You received 72 points on your late project. How many points did you lose

Answers

Final answer:

In this situation, because the project was handed in late, you lost a total of 9 points. The full score was 81, and you got 72 after a deduction.

Explanation:

The principal in this problem is understanding proportion. Given that handing in a project late results in receiving 8/9, or approximately 88.88%, of the total points, we'll figure out the total possible score by dividing the received points (72) by the portion of the full score you got for handing in the project late, which is 8/9. So, 72 ÷ 8/9 = 81. This would be the original points you could have received. You can then subtract the received points (72) from the original points (81) to ascertain the number of points lost. Therefore, 81 - 72 = 9. Consequently, you lost 9 points because the project was handed in late.

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Tom received a coupon in the mail for 30%off one regular priced item for a local sporting goods store He wishes tp purchase a soccer ball for 22.50 and shin guards for 17.00 which item would he use his coupon justify your answer by comparing the discount taken for each item

Answers

it should be used on the higher priced item to get a bigger discount.

So it should be used on the soccer ball

soccer ball: 22.50 * 0.30 = 6.75 discount

shin guards: 17.00 * 0.30 = 5.10 discount

6.75 is greater than 5.10

How are the variables on the graph related?

Answer choices:

A. As speed decreases, height stays constant.

B. As speed decreases, height increases.

C. As speed increases, height decreases.

D. As speed increases, height increases.

Answers

Having a look at the graph, we will find that:
For speed: it is increasing along the x-axis
For height: it is increasing along the y-axis

This means that the function is linearly increasing.

Based on this, the correct choice would be:
D. As speed increases, height increases

Find the quotient 4/6÷4/12

Answers

Keep Change Flip is the way to think about dividing fractions.
First- 4/6 divided by 4/12
Next- Change the division sign to multiplecation 4/6 time 4/12
Then- Flip the second number 4/6 times 12/4
Now multiply

48/24 this simplifies down to 2

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