What is the slope of a line with points at (-5,2) (4,-7)?​

Answer:

B

Step-by-step explanation:

If p and q are both true, then p→q is true.

If p is true, q is false, then p→q is false.

If p is false, q is true, then p→q is true.

If p and q are both false, then p→q is true.

So if you know that p→q and p are both true, then q must be true (because if q is false, then p→q must be false).  

Answer:

Step-by-step explanation:

To find the indicated product, multiply each element in the 2x2 matrix by 3:

3(-6)     3(-11)

3(-14)     3(-8)

which comes out to:

-18         -33

-42         -24

This corresponds to the 2nd answer choice.

Answer:

4

Step-by-step explanation:

If we perform the indicated multiplication, the highest powered x term will be 4 (as in x^4).  Thus, the total number of roots of this polynomial will be 4.

Answer:

total number of roots =4

Step-by-step explanation:

the total number of roots of each polynomial function using the factored form

[tex]F(x) = (x-6)^2(x+2)^2[/tex]

Given f(x) is in factored form, to get the roots we look at the factors and the exponents.

[tex](x-6)^2[/tex] has exponent 2, so we have two roots 6 and 6

like that [tex](x+2)^2[/tex] gives us two roots because it has exponent 2

So total number of roots for this polynomial function is 4

Answer:

120

Step-by-step explanation:

Using the definition

n[tex]P_{r}[/tex] = n! / (n - r ) !

where n! = n(n - 1)(n - 2) ....... × 3 × 2 × 1

Hence

5[tex]P_{5}[/tex] = 5! / 0! = 5! ← 0! = 1

5[tex]P_{5}[/tex] = 5! = 5 × 4 × 3 × 2 × 1 = 120

In mathematics, the permutation '5P5' equals 1 because there is exactly one way to arrange 5 items in 5 spots.

The problem you are asked to solve involves understanding permutations, which in mathematics, is a way to calculate the number of possible arrangements of a set of items. Specifically, the permutation you are asked to evaluate is written as '5P5'.

In permutation notation, the expression 'nPn' always equals 1, because there are exactly 1 ways you can arrange 'n' items in 'n' spots.

Therefore, the solution to '5P5' is 1.

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Answer:

12

Step-by-step explanation:

We are given first five multiples of 4 and 6 as shown below and we are to find their least common multiple.

Multiples of 4: 4, 8, 12, 16, 20, . . .

Multiples of 6: 6, 12, 18, 24, 30, . . .

From the given multiples, we can see that the number 12 and 24 are the common multiples which means that these numbers are multiples of both 4 and 6.

So the least common multiple will be 12.

The least common multiple (LCM) of 4 and 6 is 12. This is the smallest multiple that both numbers share.

The least common multiple (LCM) of two numbers is the smallest number that is evenly divisible by both of those numbers. In this case, we are looking for the LCM of 4 and 6.

To find the LCM, we can list the multiples of both numbers and look for the smallest common multiple.

Multiples of 4: 4, 8, 12, 16, 20, ...

Multiples of 6: 6, 12, 18, 24, 30, ...

From the lists, we can see that 12 is the smallest number that appears in both lists. Therefore, the LCM of 4 and 6 is 12.

So, the correct answer is 12. The LCM of 4 and 6 is 12 because it is the smallest number that is evenly divisible by both 4 and 6, as it appears in the list of multiples for both numbers.

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Answer:

I'm sorry but is this a question? I don't mean to be rude.

Step-by-step explanation:

Answer:

A, C

Step-by-step explanation:

I had answered this earlier, so you better look back at that question.

To reiterate, use the Pythagorean Theorem a^2+b^2=c^2.

If a^2+b^2=c^2, it is a right triangle.

*remember that squaring a square root results in just the number inside the square root.

Answer:

50 nickels, 20 quarters.

Step-by-step explanation:

System of equations (q = # of quarters, n = # of nickels):

q + n = 70, 0.25q + 0.05n = 7.50

the first equation can be changed to q = 70 - n, so we are able to substitute q with 70 - n.

So, it will look like 0.25*70 - 0.25n + 0.05n = 7.50. This can be simplified to 0.2n = 10, which means that n = 50.

Knowing that we can solve q + 50 = 70, which means that q = 20.

By applying algebraic principles, it's determined that Kevin and Randy Muise have 20 quarters and 50 nickels. We've used two equations to solve this two-variable problem. The first equation comes from the total number of coins, and the second comes from the total value of the coins

The subject of this question is a classic two-variable algebra problem. We have two unknowns here: the number of quarters (which we'll call Q) and the number of nickels (which we'll call N).

From the given information in the question, we can create the following equations:

Essentially, the first equation states that the total number of coins is 70, and the second equation is representative of the total value in dollars of the coins.

From the first equation, we can isolate one variable: N = 70 - Q.

Substituting this value into the second equation gives us

0.25Q + 0.05(70 - Q) = 7.50

⇒0.20Q +3.50 =7.50

⇒0.20Q= 4

⇒Q= 20

Solving this equation gives us the value of Q (number of quarters) = 20.

Substituting Q = 20 into our first equation: 20 + N = 70, we can find the value of N (number of nickels) = 50.

So, Kevin and Randy Muise have 20 quarters and 50 nickels.

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Answer:

B. 3/5

Step-by-step explanation

1/5 of icing = 1/3 of a cake

1/3 * 3/1 = 3/3 = 1 (a whole cake)

1/5 * 3/1 = 3/5

The answer to your question is B, 3/5.

Answer:

I GOT U ITS C DIDN'T HAVE TIME TO WRITE EXPLANATION SEEMS U IN A HURRY

Step-by-step explanation:

1 whole divided by 4 parts is the same as saying each part is 1/4 or 25% of the whole.

Answer: OPTION D

Step-by-step explanation:

THe quadratic formula is shown below:

[tex]x=\frac{-b\±\sqrt{b^2-4ac}}{2a}[/tex]

Given the quadratic equation shown in the image, you have that:

a=1

b=3

c=4

Therefore, when you susbtityte these values into the formula you obtain the following solution:

[tex]x=\frac{-3\±\sqrt{3^2-4(1)(4)}}{2*1}[/tex]

[tex]x=\frac{-3\±\sqrt{-7}}{2}[/tex]

Answer:

D.x = (-3±√-7) / 2

Step-by-step explanation:

We have given  a quadratic equation.

x²+3x+4  = 0

From above equation, a = 1, b = 3 and c = 4

We have to find the solution of given equation bu using quadratic formula.

x  = (-b±√b²-4ac) / 2a

Putting given values in above formula, we have

x = (-3±√(3)²-4(1)(4) ) / 2(1)

x = (-3±√9-16) / 2

x = (-3±√-7) / 2 which is the answer.

Let's do this in steps, show your work!   | Make sure to ask questions!

#1. Simplify 5x - 4 + 3 to 8x - 4.

8x - 4 = 36.

#2. Add 4 to both sides.

8x = 36 + 4.

#3. Simplify 36 + 4 to 40.

8x = 40.

#4. Divide both sides by 8.

x = 40/8.  <------ It turned into a fraction because it's easier to not divide a decimal.

#5. Simplify 40/8 to 5.  

x = 5.

The cost at which both video rental plans are the same is $48, which occurs when a customer borrows 20 DVDs in a month.

The student asked about the cost at which both video rental plans offered by a company would be equal in value. To find this, we need to establish an equation for each plan and set them equal to each other. The first plan includes a membership fee of $8 and charges $2 for every DVD borrowed, which can be represented as cost = $2 × number of DVDs + $8. The second plan is a flat rate of $48 per month for unlimited rentals.

Now we set the equations equal to each other: $2 × number of DVDs + $8 = $48. Solving for the number of DVDs would look like this:

Therefore, the break-even point where both plans cost the same amount is at 20 DVDs borrowed. At this point, the customer would pay $48 with either plan.

Answer:

41

Step-by-step explanation:

Add the numbers together and divide by 5. 5 is the amount of numbers in the example.

Answer: The mean of all the numbers is 41.

Step-by-step explanation:

To find the mean of a set of numbers you must first add them all together.  In this case, all of the numbers added together equaled 205.  Then, you divide what ever your previous number was by how many numbers are in the original set all total.  In this case, there was 5.  So my last step would be dividing 205 / 5 = 41.  41 is my final answer.  

[tex]\bf \textit{volume of a cylinder}\\\\ V = \pi r^2 h~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ r=10\\ h=8 \end{cases}\implies V=\pi (10)^2(8) \\\\\\ V=800\pi \implies V\approx 2513.27[/tex]

Answer:

V = 800π

Step-by-step explanation:

The formula for volume of a cylinder is V = πr²h  where r is the radius of the base circle, and h is the height of the cylinder

We are given r = 10, and h = 8.  Plug them in and solve for V...

V = π(10²)(8)

    V = π(100)(8)

          V = 800π

This is the EXACT answer.  Leave it in terms of pi.  If you multiply out pi, you have to round, then you have an estimated answer.

Answer:

The area of the rectangle is 2/15

Step-by-step explanation:

To figure this out you have to multiply the length and the width

2/5×1/3 = 2/15

This is the simplified answer

Answer:

The maximum number of points is [tex]140\ points[/tex]

Step-by-step explanation:

we know that

Essay question represent the 10% on Mrs. Moore's English final exam

so

To find the number of points in Essay questions multiply the percent by total questions and then multiply by the value of 10 points each

[tex]10\%=10/100=0.10[/tex]

[tex]0.10*50=5\ Essay\ questions[/tex]

[tex]5*10=50\ points[/tex]

The remaining questions are

[tex]50-5=45\ questions[/tex]

To find the number of points in the remaining questions multiply the number of remaining questions by the value of 2 points each

[tex]45*2=90\ points[/tex]

therefore

The maximum number of points is

[tex]50\ points+90\ points=140\ points[/tex]

Answer:

The probability of rolling a 5 on the first number cube and rolling a 6 on the second number cube is 1/36

Step-by-step explanation:

There are total 6 possible outcomes of rolling a six sided fair cube. Therefore, the probability of rolling each number (1,2,3,4,5,6) is fair = 1/6

In this way,

The probability of rolling a 5 on the first number cube = p(A) = 1/6

The probability of rolling a 6 on the second number cube = p(B) = 1/6

The probability of rolling a 5 on the first number cube and rolling a 6 on the second number cube is = p(A) * p(B) = 1/6*1/6 = 1/36

Answer:

1/36

Step-by-step explanation:

The probability of rolling a 5 on the first number cube and rolling a 6 on the second number cube is 1/36

Step-by-step explanation:

There are total 6 possible outcomes of rolling a six sided fair cube. Therefore, the probability of rolling each number (1,2,3,4,5,6) is fair = 1/6

In this way,

The probability of rolling a 5 on the first number cube = p(A) = 1/6

The probability of rolling a 6 on the second number cube = p(B) = 1/6

The probability of rolling a 5 on the first number cube and rolling a 6 on the second number cube is = p(A) * p(B) = 1/6*1/6 = 1/36

Answer:

The correct option is 4.

Step-by-step explanation:

The given function is

[tex]f(x)=5(2)^x[/tex]

Put x=0,

[tex]f(0)=5(2)^0=5\times 1=5[/tex]

Put x=1,

[tex]f(1)=5(2)^1=5\times 2=10[/tex]

Put x=2,

[tex]f(2)=5(2)^2=5\times 4=20[/tex]

Put x=3,

[tex]f(3)=5(2)^3=5\times 8=40[/tex]

Only table 4 represents the correct value of the given function, therefore the correct option is 4.

The table representation of the exponential function f(x)=5*2^x is: for x=0, f(x)=5; for x=1, f(x)=10; for x=2, f(x)=20; for x=3, f(x)=40.

To find the table representation of the exponential function f(x)=5*2^x, we need to calculate the values of f(x) for different values of x. Remember, any number raised to the power of 2 is being squared, but in this case, x can be any integer, and we're multiplying the result of 2 raised to that power by 5. Here's how you calculate the first few values:

Therefore, the correct table representation of the function f(x)=5*2^x is:

Answer:

The numbers are

14

and

7

.

Explanation:

Let the numbers be

x

and

y

.

x

+

y

=

21

x

−

y

=

7

y

=

21

−

x

x

−

(

21

−

x

)

=

7

x

−

21

+

x

=

7

2

x

=

28

x

=

14

∴

14

+

y

=

21

y

=

7

Answer:  The required numbers are 14 and 7.

Step-by-step explanation:  Given that the sum of two numbers is 21 and their difference is 7.

We are to find the numbers.

Let x and y represents the two numbers.

Then, according to the given information, we have

[tex]x+y=21~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)\\\\x-y=7~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(ii)[/tex]

Adding equations (i) and (ii), we get

[tex](x+y)+(x-y)=21+7\\\\\Rightarrow 2x=28\\\\\Rightarrow x=\dfrac{28}{2}\\\\\Rightarrow x=14.[/tex]

From equation (i), we get

[tex]x+y=21\\\\\Rightarrow 14+y=21\\\\\Rightarrow y=21-14\\\\\Rightarrow y=7.[/tex]

Thus, the required numbers are 14 and 7.

Answer: The area is 221.558, with the explanation below.

Step-by-step explanation: The area of a circle is solved by the equation

π x r². You are given the diameter of 16.8, and the radius is half of it, so the radius = 16.8/2 = 8.4

Next, you need to plug your numbers into the equation:

Area = 3.14 x 8.4²

Area = 3.14 x 70.56

Area = 221.558

[tex]x^2-y^2=-5[/tex]

The problem tells us that the slope of the tangent to a curve at any point [tex](x, y)[/tex] on the curve is x divided by y, that is:

[tex]m=\frac{x}{y}[/tex]

We also know that the point [tex](2,-3)[/tex] is on the curve. By taking a look on the options this point lies on both equations, namely:

[tex]x^2+y^2=13 \ because \ (2)^2+(-3)^2=13 \\ \\ x^2-y^2=-5 \ because \ (2)^2-(-3)^2=-5[/tex]

We know that the derivative is the slope of the tangent line to the graph of the function at a given point. So taking the derivative of both equations we have:

[tex]\frac{d}{dx}(x^2+y^2)=\frac{d}{dx}(13) \\ \\ \therefore 2x+2y\frac{dy}{dx}=0 \\ \\ \therefore m=\frac{dy}{dx}=-\frac{x}{y}[/tex]

And:

[tex]\frac{d}{dx}(x^2-y^2)=\frac{d}{dx}(-5) \\ \\ \therefore 2x-2y\frac{dy}{dx}=0 \\ \\ \therefore m=\frac{dy}{dx}=\frac{x}{y}[/tex]

So [tex]x^2-y^2=-5[/tex] also meets the requirement of the condition the slope of the tangent to a curve at any point (x, y) on the curve is x divided by y. Therefore this is the correct option.

Answer:

The correct option is D

Step-by-step explanation:

Edge2020

Answer:

1/81

Step-by-step explanation:

Remember:

b^-n = 1/b^n

Then

[(3^2)]^-2 = 1/[9^2]

1/81

Best regards

Answer:

The correct answer option is [tex]\frac { 1 } { 81 } [/tex].

Step-by-step explanation:

We are given the following expression and we are to find out whether which of the given answer options is equivalent to this expression:

[tex] ( 3 ^ 2 ) ^ { - 2 } [/tex]

We know the rule for solving the exponents:

[tex] ( b ^ n ) ^ { m } = b ^ { n \cdot m} [/tex]

This means that the exponents are multiplied with each other.

So, if we multiply them, for the given expression we get:

[tex] ( 3 ) ^ { - 4 } [/tex] = [tex] \frac { 1 } { 3 ^ 4 } = \frac { 1 } { 81 } [/tex]

Answer:

The answer is 1/9.

Step-by-step explanation:

Reduce the expression, if possible, by cancelling the common factors.

Hope this helps. :D

For this case we have that by definition, any number raised to zero results in "1".

That is to say:

[tex]a ^ 0 = 1[/tex]

Then, given the following expression:

[tex]\frac {(- 3) ^ 0} {(- 3) ^ 2} = \frac {1} {(- 3) (- 3)} =[/tex]

Taking into account that:

[tex]- * - = +\\\frac {1} {(- 3) (- 3)} = \frac {1} {9}[/tex]

Answer:

[tex]\frac {1} {(- 3) (- 3)} = \frac {1} {9}[/tex]

Option c

The last option is not even a function, because it ambiguously defines the endpoints.

The first option doesn't define the endpoint, because they are always excluded.

So, the correct option is the second one, because it includes the left endpoint and excludes the right one.

The function d(x) is given by:

d(x)=  1 if   1≤x<4

         2 if  4≤x<6

        3.5 if  6≤x<11

and  5  if 11≤x<13

                    1 when 1≤x<4

( because the graph is a straight horizontal line i.e. y=1 and the line has a closed circle at x=1 and open circle at x=4 )

( because the graph is a straight horizontal line i.e. y=2 and the line has a closed circle at x=4 and open circle at x=6 )

( because the graph is a straight horizontal line i.e. y=3.5 and the line has a closed circle at x=6 and open circle at x=11 )

( because the graph is a straight horizontal line i.e. y=5 and the line has a closed circle at x=11 and open circle at x=13 )

I believe the correct answer is 36

Answer:

60 square meters

Step-by-step explanation:

The area of a triangle is with the formula A = 1/2 b*h. The base and height are the measurements of the sides of a triangle which form a 90 degree angle. When all three measurements are given, the base and height are the smallest since the largest is the hypotenuse. Here b = 8 and h = 15.

So the area is A = 1/2 * 8 * 15 = 60.

Answer:

a: 162 ft^2

Step-by-step explanation:

Lets turn the inches into feet. Every one inch is 3 feet so 3 inches is 9 feet and 6 inches is 18 feet. 9*18=162. The area of the playground is 162 ft^2

Answer:

see below

Step-by-step explanation:

Let q = number of quarters

Each quarter is worth .25

The total is 9.50

.25q = 9.50

Divide each side by .25

.25q/.25 = 9.50/.25

q =38

she has 38 quarters