solve the system by substitution y=7x+15
y=2x

-12kxand up a 2 +1

your welcome

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Answer:

[tex]-12kx^2+1[/tex]

Step-by-step explanation:

Given;

k(-3)4x²+1

Solve;

[tex]k\left(-3\right)\cdot \:4x^2+1[/tex]

[tex]\mathrm{Multiply\:the\:numbers:}\:\left(-3\right)\cdot \:4=-12[/tex]

[tex]=k\left(-12\right)x^2+1[/tex]

[tex]\mathrm{Remove\:parentheses}:\quad \:k\left(-12\right)x^2=-k\cdot \:12x^2[/tex]

[tex]=-k\cdot \:12x^2+1[/tex]

[tex]=-12kx^2+1[/tex]

Answer = [tex]-12kx^2+1[/tex]

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Answer: 20%

Step-by-step explanation: $1200 - $960 = $240

20% of 1200 is 240.

Answer:

7

Step-by-step explanation:

Because the lines are parrell and there is and a line intersecting both, you can say that the angles are interior corresponding angles. Thus you can have an equation 46=6x-2 then 48=6x divide x=7

Answer:

74

10x7=70

10-6=4

70+4=74

The result of the given mathematical expression is 74.

A mathematical expression consists of numbers, variables, and common mathematical operations such as addition, subtraction, multiplication, division, and more.

The given expression is:

{10 x 7} + (10 - 6)

= 70 + 4

= 74

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Answer:

7(x-1)

Step-by-step explanation:

If you factor out 7 from each term,

you end up with 7([tex]\frac{7x}{7} -\frac{7}{7}[/tex])

or 7(x-1)

Answer: 13

Step-by-step explanation:First, based on the data, find the probability of a water cooler being a student's first choice of additions to the lunchroom.

Robert has surveyed 10+7+4+5=26students.

7 of these students ranked a water cooler as their first choice.

So, the probability of a water cooler being a student's first choice of additions to the lunchroom is

7

26

.

You can estimate how many of the next 50 students surveyed will rank a water cooler as their first choice by assuming that

7

26

of the 50 students will do so. Find

7

26

of 50.

7

26

50=13.461…

Based on the data, about 13 students out of the next 50 surveyed will rank a water cooler as their first choice of additions to the lunchroom.

Answer:57.95

Step-by-step explanation:

24.25

16.70

17.00=57.95

Answer:

Option (C)

Step-by-step explanation:

Quadratic parent function has been given as,

f(x) = x²

If we reflect this function across the x-axis and vertically stretched by a scale factor of 'k',

g(x) = -kx²

This quadratic function passes through a point (1, -4),

g(1) = -k(1)²

-4 = -k

k = 4

Therefore, the new function after transformation will be,

g(x) = -4x²

Option (C) will be the correct option.  

The function g(x) is [tex]\rm g(x) = -4x^2\\[/tex].

Given that,

The function g(x) is a transformation of the quadratic parent function,

[tex]\rm f(x) = x^2[/tex]

We have to determine,

What function is g(x)?

According to the question,

The function f(x) is a transformation of the quadratic parent function,

[tex]\rm f(x) = x^2[/tex]

In the given figure the function g(x) reflect across the x-axis and is vertically stretched by a scale factor of 'k',

Then, The function g(x) is,

[tex]\rm g(x) = -kx^2[/tex]

Therefore,

The quadratic equation passes through the point (1,4),

[tex]\rm g(x) = -kx^2\\\\g(1) = -k(1)^2\\\\-4 = -k\\\\k= 4[/tex]

Therefore,

The function g(x) is,

[tex]\rm g(x) = -kx^2\\\\g(x) = -4x^2[/tex]

Hence, The required function g(x) is [tex]\rm g(x) = -4x^2\\[/tex].

For more details refer to the link given below.

https://brainly.com/question/411998

The area of the sector which has a central angle of 5π/7 radians and a diameter of 5.6 in is 8.79 in².

The area of a circular sector is the total space occupied by it. The sector area is half of the product of the square of radius of the circle and the central angle.

It can be calculated as,

[tex]A_{sector}=\dfrac{d^2\theta}{8}[/tex]

Here, (d) is the diameter of the circle and (θ) is the central angle.

The central angle of the sector is 5π/7 radians and the diameter of the sector is 5.6 in.

Put the values in the above formula as,

[tex]A_{sector}=\dfrac{(5.6)^2\times5\pi}{8\times7}\\A_{sector}=\dfrac{(5.6)^2\times5\pi}{8\times7}\\A_{sector}=8.79 \rm \; in^2[/tex]

Hence, the area of the sector which has a central angle of 5π/7 radians and a diameter of 5.6 in is 8.79 in².

Learn more about the area of a circular sector here;

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The probabilities for each case are:

There are 8 reservations for passengers that may go or not, such that the probability of arriving to the flight is P = 0.42, and the probability of not arriving is Q = 0.58

a) There will be overbooking if 7 or more passengers go to the flight, the probability that the 8 attend is:

P(8) = (0.42)^8

The probability that 7 attend is:

P(7) = 8*(0.42)^7*(0.58)

(where the factor 8 is because there are 8 permutations)

The total probability is:

P = P(8) + P(7) = 0.012

b) Will be empty seats if less than 6 people go.

The probability that exactly 6 of these people go to the flight is:

P(6) = (28)*(0.42)^6*(0.58)^2

Where there are 28 permutations, that is why we used that factor.

Then, the probability of having empty seats is:

P = 1 - P(6) - P(7) - P(8) = 0.937

If you want to learn more about probability, you can read:

https://brainly.com/question/251701

Answer:

783

Step-by-step explanation:

There are 52 weeks in a year. Divide 40,716/52 and you get $783 weekly.

Answer:

Picture or graph? I need a graph to answer.

Answer:

8 red flyers and 8 blue flyers

Step-by-step explanation:

Packs of red flyers = 8

Blue flyers = 4

Jenny realizes that she gave out the same number of red and blue flyers

Find the lowest multiples of 8 and 4

8 = 8, 16, 24, 32

4 = 4, 8, 12, 16

The lowest common multiples of 8 and 4 is 8

Therefore,

The minimum number of flyers of each color is

8 red flyers and 8 blue flyers

The total finance charge for a $4,250 loan at 13. 25% interest compounded monthly for 24 months is $670.54.

What is Compound Interest?

Interest on interest, or compound interest, is the adding of interest to the principal sum of a loan or deposit. It's the outcome of reinvesting interest rather than paying it out so that interest is received on the principal plus previously collected interest in the next quarter.

[tex]A = P(1 + \frac{r}{n})^{nt}[/tex]

A is the final amount, P is the Initial principal balance, r is the interest rate, n is the number of times interest is applied per time period, t is the number of time periods elapsed.

As it is given that the principal amount is $4,250 while the interest rate is 13.25% compounded monthly and the principal amount is taken for 24 months, therefore,

[tex]A = P(1 + \frac{r}{n})^{nt}\\\\A = 4,250(1 + \frac{0.1325}{12})^{24 \times 2}\\\\A = 5,531.54[/tex]

Now, the total amount that is needed to be paid is $5,531.54, while $4,250 was the principal amount therefore, the finance charge or the interest is,

Financial Charge = Final amount - Principal amount

Financial Charge = $5531.54 - $4861 = $670.54

Hence, the total finance charge for a $4,250 loan at 13. 25% interest compounded monthly for 24 months is $670.54.

Learn more about Compound Interest:

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Answer:

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Answer:

x = –3, x = –1, or x = 1

Step-by-step explanation:

when I put -3.-1,or 1 as x I get 0

Remainder Theorem Way :

x^3-3x^2-x-3

x^2 (x+3) -1(x+3) = 0

(x^2 -1) (x+3) = 0

(x+1) (x-1) (x+3) = 0

x= 1 x= -1 x= -3

https://brainly.com/question/3470351

Answer:

its b

Step-by-step explanation:

cause I took test

Answer:

1.23, -4.8

Step-by-step explanation:

-3.57 - 1.23 = -4.8

Hope this helps :)

Answer:

98.875

Step-by-step explanation:

Just add all the hours worked.

Hope this helps! :)

Answer:

what 35 minus 42

Step-by-step explanation:

Answer:

20%

Step-by-step explanation: you just multiply 35 bye different percent and obviously more than 50 is too much in less than 10 is too little so just multiply from numbers that you know are close and from 35 to 42 is seven so once you multiply those percent by 35 you have to get seven as your answer

Answer:

E. 0.75%

Step-by-step explanation:

Convert to a fraction, then convert to a decimal by dividing the numerator by the denominator.

Answer: is 4 you dontiy noweok

Step-by-step explanation: beacouse 2 + 2 is for silli sdlkfjasñldkas

sadfjlñsakdfjñsldfk

sdfsdlfksjañdlkfj234

23

42

34

23

4234

4

56

6

345

.

Answer:

We have two independent events.

A number cube, with 6 possible outcomes.

A spinner, with 3 possible outcomes.

Each element in the combined sample space will be something like:

(outcome of the number cube, outcome of the spinner).

Then the number of possible outcomes in the sample size is equal to the product between the number of outcomes in each event.

Sample space size = 6*3 = 18.

Answer:

The answer is D. With all the 18 options.

Step-by-step explanation:

Answer:

300.2

7505/25=300.2 or300

Answer:

28.01

Step-by-step explanation:

Since x = 5.1

Substitute

5.1² + 2

=26.01+2

Add the numbers

=28.01

Hence, Answer = 28.01

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Answer:

a₇ = 797

Step-by-step explanation:

substitute n = 7 into the explicit formula

a₇ = 800 - 0.5(7 - 1) = 800 - 0.5(6) = 800 - 3 = 797