What is the true answer of 8.50x+70=750??????????

Answer:

20x⁴ - 13x³+ 8x² - x + 6

Step-by-step explanation:

Multiplyin gbthebtop trinomial by the last term. Of the bottom trinomial.

___4x² - 5x + 3

___5x² + 3x + 2

* ____________

_________8x² - 10x + 6

______12x³-15x²+9x

_20x⁴-25x³+15x²

____________________

20x⁴ - 13x³+ 8x² - x + 6

___________________

Answer:

78kg

Step-by-step explanation:

76×5= 380kg

380-72-74-75-81= 78kg

Answer: #x^3

Step-by-step explanation:

        x^3

note: An algebraic expression doesn't have an equal sign (=)

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Answer:

It has a slope of 0

Step-by-step explanation:

Answer:

a slope of zero

Step-by-step explanation:

a vertical line has an undefined slope, a horizontal line has a slope of zero

The function for the given situation is m=200+0.8t.

Given that, Leticia is selling raffle tickets for her class fundraiser. Her class receives four-fifths of the money raised from selling the raffle tickets.

Functions are the fundamental part of the calculus in mathematics. The functions are the special types of relations. A function in math is visualized as a rule, which gives a unique output for every input x.

Here, the amount of money in Leticia's class fund=m and  the amount of money Leticia has made from selling raffle tickets is t

Now, the function is

m=200+4/5 t

⇒m=200+0.8t

Therefore, the function for the given situation is m=200+0.8t.

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xy + xz is an even integer & x is even and y + xz is an odd integer &  either (x-1) is even or (y-z) is even .

1. xy + xz is an even integer - SUFFICIENT

Given:

xy + z is odd ...(i)

xy + xz is even ...(ii)

subtracting (ii) from (i)

we get xz - z, which should be odd (* since odd - even = odd)

=> z(x-1) is odd

=> both z and (x-1) is odd

=> since (x-1) is odd, x must be even.

2. y + xz is an odd integer -INSUFFICIENT

Given:

xy + z is odd ...(i)

y + xz is odd ...(ii)

subtracting (ii) from (i)

we get xy + z - y - xz

= (x-1)(y-z) , which should be even

=> either (x-1) is even or (y-z) is even ....insufficient to determine

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Answer:

16 and a half

Step-by-step explanation:

it should be 16 and a half sense median is middle

Answer: 190 cm = 2.07787 yards, rounded to the nearest hundredth, 2.08 yards.

Step-by-step explanation:

divide 190 cm by 91.44 to get your answer.

We see BC is in the middle of the lines AB and BD, therefore mABC + mCBD = mABD.

We're given mABD = 75, mABC = 40.

Therefore, mCBD = mABD - mABC = 75 - 40 = 35.

Answer:

∠CBD = 35°

Step-by-step explanation:

We are told in the question that m∠ABD = 75° and m∠ABC = 40°. We are then asked what the value of m∠CBD is.

As we can see from the diagram, ∠ABD is made up of the angles ABC and CBD. Therefore:

∠ABD = ∠ABC + ∠CBD

⇒ 75° = 40° + ∠CBD

⇒ 75° - 40° = 40° + ∠CBD - 40°       [

⇒ 35° = ∠CBD

∴ ∠CBD = 35°

The estimate of the mean length of the insects Ciara found is 17 millimeters (mm).

To calculate an estimate of the mean length of the insects Ciara found, we need to find the weighted average of the lengths using the given frequencies.

Let's denote the lower limits of the length intervals as L1 = 0, L2 = 10, and L3 = 20.

Similarly, denote the upper limits as U1 = 10, U2 = 20, and U3 = 30.

Next, we calculate the midpoints of each interval by taking the average of the lower and upper limits.

The midpoints are M1 = (L1 + U1) / 2 = 5, M2 = (L2 + U2) / 2 = 15, and M3 = (L3 + U3) / 2 = 25.

Now, we can calculate the sum of the products of the frequencies and the corresponding midpoints.

This gives us (5 \(\times\) 5) + (6 \(\times\) 15) + (9 \(\times\) 25) = 25 + 90 + 225 = 340.

Next, we calculate the sum of the frequencies, which is 5 + 6 + 9 = 20.

Finally, we divide the sum of the products by the sum of the frequencies to find the weighted average, which is 340 / 20 = 17.

Therefore, the estimate of the mean length of the insects Ciara found is 17 millimeters (mm).

Thus, the mean length of the insects Ciara found is approximately 17 millimeters (mm).

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Answer:

slope: 1

y-intercept: (0, 4)

Step-by-step explanation:

Answer:

Butter = (3*15) / 4 = 45/4 = 11 1/4 tsp

Baking powder = (3*5) / 4 = 15/4

= 3 3/4 tsp

Pecans = (3 * 2) / 4 = 6/4

= 3/2 = 1.5 cups

Here, we are required to determine how much of each of these ingredients are necessary for 3 dozen cookies

The ingredients are;

Therefore, for 3 dozen cookies; 3 quarters of the requirements for 4 dozen cookies;

Ultimately,

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Answer: 19

Step-by-step explanation:

Multiplying both sides of the equation by \(-3\) gives that \(x=19\).

Let A be the total amount of money that Mrs. Sorenstam had before buying the school supplies. Let C be the unit price of the compass, M the unit price of the mechanical pencil and R the unit price of the ruler.

The total amount of money required for the school supplies of one student, is C+M+R. Since there are 12 students, the total amount of money required for school supplies is:

Since Mrs. Sorenstam had a total A of money and she bought the school supplies for 12 students, with 36 cents left after the transaction, then:

Since C=1.49, M=0.59 and R=0.49, then:

Then, our equation is equivalent to:

which is the equation that we may write for the first part of the problem.

For the second part, one step is to multiply 12 times 2.57, and then add the result to both sides of the equation to solve for A:

1.- Multiply 12 times 2.57:

2.- Add 30.84 to both sides of the equation:

Answer:

151.18

Step-by-step explanation:

I can't really show my work on this, sorry.

Answer:

151.18

Step-by-step explanation:

210.58-59.40=151.18

Answer:

Step-by-step explanation:

Given the height of the object covered by the ball modeled by the function;

h(x) = -16x^2 + 48x + 64

To determine the height covered by the ball after 1.2 secs, we will simply substitute x = 1.2s into the formula and find h(x) as shown;

h(1.2) = -16(1.2)^2 + 48(1.2) + 64

h(1.2) = -16(1.44) + 48(1.2) + 64

h(1.2) = -23.04 + 57.6 + 64

h(1.2) = 98.56m

This means that the ball have covered 98.56m in 1.2sseconds

Answer:

The Answer is D. 25ft

Step-by-step explanation:

Taking the quiz rn hope this helps:)

Answer:

Step-by-step explanation:

jjjjjjjj

Answer: £280

Step-by-step explanation:

After a year, the total amount that was in the account was £291.20 which according to the question is 4% more than the amount Patrick invested.

Assume the amount invested is x.

x + 0.04x = 291.20

1.04x = 291.20

x = 291.20/1.04

= £280

Answer:

27

Step-by-step explanation:

math

The function f(x) = ax^b is not one-to-one if b is an even integer, and its inverse function does not exist in such cases. If b is an odd integer or any other real number, f(x) is one-to-one, and its inverse function is f^(-1)(x) = (x/a)^(1/b).

A function is considered one-to-one if each element in the domain is mapped to a unique element in the range. To determine if the function f(x) = ax^b is one-to-one, we need to analyze the exponent b.

If b is an even integer (b = 2, 4, 6, ...), the function is not one-to-one because raising a positive or negative number to an even power eliminates the sign. As a result, multiple values of x can yield the same value of f(x), violating the one-to-one property. In such cases, the inverse function f^(-1)(x) does not exist.

However, if b is an odd integer (b = 1, 3, 5, ...) or any other real number, the function f(x) = ax^b is one-to-one. In these cases, we can find the inverse function. To find f^(-1)(x), we can solve the equation x = ax^b for x in terms of f(x). Rearranging the equation, we get x = (f(x)/a)^(1/b), which gives us the inverse function f^(-1)(x) = (x/a)^(1/b).

Therefore, depending on the value of b, the function f(x) = ax^b may or may not be one-to-one, and its inverse function may or may not exist.

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Answer: y = 45x + 345

Step-by-step explanation:

Hope this helps!!! :)

Answer: B

Step-by-step explanation:

The transformation that took place to form A'B'C' is Shifted 4 units left and 2 units down.

A transformation is a process that manipulates a polygon or other two-dimensional object on a plane or coordinate system.

Given that, a triangle ABC has undergone a transformation to form A'B'C' we need to identify the steps of transformation

So, considering the point B and B', we see, that, x-coordinate of B is at 5 and that of B' is at 1, that mean there is a shift of 4 units left,

Now, consider the y-coordinate, we see, that B is at 9 and B' is at 7 that gives a downward shifting of 2 units.

Hence, the transformation that took place to form A'B'C' is Shifted 4 units left and 2 units down.

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Answer: 4 ten-point questions and 15 four-point questions

Step-by-step explanation:

We will set up a system of equations to help us solve this question. Let x be ten-point questions and y be four-point questions.

         A test has 19 questions;

                   x + y = 19

         ... worth a total 100 points;

                   10x + 4y = 100

Now, we will solve by graphing. See attached. The point of intersection is our solution, where the lines cross each other.

         (4, 15), 4 ten-point questions and 15 four-point questions.

Answer:

I believe the answer is the first one A

Step-by-step explanation:

If you do this will construct the perpendicular bisector for AB.

Answer:

iT IS A

Step-by-step explanation:

The distance between two points on a plane is calculated by finding the length of the straight line between them. The formula used to find the distance between two points (a,b) and (c,d) is given below:Distance = √((c - a)^2 + (d - b)^2)Hence,

the distance between the points (4, 3) and (8, 6) is calculated below:Distance = √((8 - 4)^2 + (6 - 3)^2) = √(4^2 + 3^2) = √(16 + 9) = √25 = 5Therefore, the correct answer is option A, i.e. √((c - a)^2 + (d - b)^2); 5.

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Answer:

The equation of the ellipse is;

\(\dfrac{(x + 4)^2}{4^2} + \dfrac{(y - 0)^2}{1^2} = 1\)

Step-by-step explanation:

The parameters of the ellipse are;

The location of the center of the ellipse = (-4 0)

The coordinates of the vertex of the ellipse = (-8, 0)

The coordinates of the the co-vertex = (-4, 1)

The general form of the equation of an ellipse is presented as follows;

\(\dfrac{(x - h)^2}{a^2} + \dfrac{(y - k)^2}{b^2} = 1\)

The center of the above equation of an ellipse = (h, k)

The vertex of the above equation are; (h - a, k) and (h + a, k)

The co vertex of the above equation are; (h, k - b) and (h, k + b)

By comparison, we have;

h = -4, k = 0

For the vertex, we have;

When

h - a = -8

∴ -4 - a = -8

-a = -8 + 4 = -4

a = 4

When

h + a = -8

-4 + a = -8

∴ a = -4

a = 4 or -4

We note that a² = 4² = (-4)²

For the covertex, we have;

When

k - b = 1

0 - b = 1

b = -1

When k + b = 1

0 + b = 1

b = 1

∴ b = 1 or -1

b² = 1² = (-1)²

We can therefore write the equation of the ellipse as follows;

\(\dfrac{(x - (-4))^2}{4^2} + \dfrac{(y - 0)^2}{1^2} = \dfrac{(x + 4)^2}{4^2} + \dfrac{(y - 0)^2}{1^2} = 1\)

Therefore;

\(\dfrac{(x + 4)^2}{4^2} + \dfrac{(y - 0)^2}{1^2} = 1\)

The Given Series 1000+200+40+8+8/5 is Convergent.

If a series converges to a value as its terms approach to infinity, it is said to be convergent. If a series does not converge to a value but instead keeps on increasing or dropping as the terms of the series tend to infinity, it is said to be divergent.

Given:

The series is given as 1000+200+40+8+8/5

The common ratio is

200/1000

= 1/5

Then,40/200

= 1/5

= 0.2

Now, As the common ratio is < 1 so the series is convergent.

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Answer:

.8Km

Step-by-step explanation:

There is exactly 100,000 CM in every KM, if someone such as Ben was to measure out 80,000, to convert to KM you'd take the given value and divide by the appropriate values.

80,000cm / 100,000cm = .8 KM

Answer:

a) \(f(2) = 5\), b) \(f^{-1} (x) = \frac{x-1}{2}\), c) \(f^{-1} (7) = 3\)

Step-by-step explanation:

a) We evaluate the function at \(x = 2\):

\(f(2) = 2\cdot (2) + 1\)

\(f(2) = 4+1\)

\(f(2) = 5\)

b) First, we determine the inverse of the function by algebraic means:

1) \(y = 2\cdot x + 1\) Given

2) \(y +(-1) = 2\cdot x + [1+(-1)]\) Compatibility with addition/Associative property

3) \(y + (-1) =2\cdot x\) Existence of additive inverse/Modulative property

4) \(2^{-1}\cdot [y+(-1)] = (2\cdot 2^{-1})\cdot x\) Compatibility with multiplication/Commutative and associative properties

5) \([y+(-1)]\cdot 2^{-1} = x\) Existence of multiplicative inverse/Modulative and commutative properties

6) \(x = [y+(-1)]\cdot 2^{-1}\) Symmetry property of equality

7) \(x = \frac{y-1}{2}\) Definitions of subtraction and division

8) \(f^{-1} (x) = \frac{x-1}{2}\) \(x = f_{-1} (x)\)/\(y = x\)/Result

c)  Now we evaluate the expression obtained on b) at the given number:

\(f^{-1} (7) = \frac{7-1}{2}\)

\(f^{-1} (7) = 3\)

The answer is: Oscar's number is 210.

What is Sum?

In mathematics, the sum is the result of adding two or more numbers or quantities together. It is a basic arithmetic operation and is often denoted by the symbol "+".

To solve this question, we need to find a number that satisfies the following conditions:

The number is between 200 and 220.

The number is divisible by 6.

The sum of all the digits is 3.

Let's start by finding all the multiples of 6 that are between 200 and 220:

204 = 2 + 0 + 4 = 6

210 = 2 + 1 + 0 = 3

216 = 2 + 1 + 6 = 9

Out of these numbers, only 210 has a sum of digits that is equal to 3. Therefore, the number that Oscar is thinking of is 210.

To check that 210 is between 200 and 220, we can see that it is indeed between the two numbers:

200 < 210 < 220

And to check that 210 is divisible by 6, we can see that:

210 ÷ 6 = 35

Therefore, the answer is: Oscar's number is 210.

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