Which ordered pair is the solution to the system of linear equations y = negative 7 x + 2 and y = 9 x minus 14? (negative 5, 1) (1, negative 5) (5, negative 1) (Negative 1, 5)

Answers

Answer 1

Answer:

Answer:

B. $(1,-5)$

Step-by-step explanation:

We have been given a system of equations. We are asked to choose the ordered par that is the solution to the given system.

$y=-7x+2...(1)$

$y=9x-14...(2)$

To solve our given system, we will equate both equations as:

$9x-14=-7x+2$

Combine like terms:

$9x+7x-14+14=-7x+7x+2+14$

$16x=16$

$x=(16)/(16)=1$

Upon substituting $x=1$ in equation (1), we will get:

$y=-7(1)+2\n\ny=-7+2\n\ny=-5$

Therefore, the ordered pair $(1,-5)$ is the solution of the given system and option B is the correct choice.

Answer 2

Answer:

Answer:

mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm its b

Step-by-step explanation:

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How do you solve x to the second power +7x=O

Answers

well the answer is 0 because if anything = 0 then it has to be multiplied by 0 so x = 0

x^2+7x=0
use the square root something....
(7/2)^2=49/4(add it to both sides)
x^2+7x+49/4=49/4
(x+7/2)^2=49/4
x+7/2=posinega 7/2
x=0 or x=-7

in this triangle, the product of sin b and tan c is , and the product of sin c and tan b is . nextreset

Answers

The triangle is a right triangle with:1) leg c opposed to angle C.2) leg b opposed to angle B.3) hypotenuse, a, opposed to angle A.So, using the definitions of the trigonometric ratios, you get:1) sin C = opposite leg / hipotenuse = c / a.2) tan B = opposite leg / adjacent leg = b / c=> sin C * tan B = [c / a] * [b / c] = b / a.Answer: b / a

Answer:

the answer is a/b

Step-by-step explanation:

The school café charges $3 for hot lunch. This amount is automatically withdrawn from a student's lunch account each day they purchase. If Kelsey purchased hot lunch all 5 days last week, how much did her lunch account change?

Answers

Answer:

15 dollars

Step-by-step explanation:

you do 3 × 5 which will give you 15

how do i solve this infinite geometric series?

64/25-16/5+4-5

Answers

$(64)/(25)-(16)/(5)+4-5+....\n\na_1=(64)/(25);\ a_2=-(16)/(5)\n\nq=a_2:a_1\n\nq=-(16)/(5):(64)/(25)=-(16)/(5)\cdot(25)/(64)=-(5)/(4)\n\nS_n=(a_1(1-q^n))/(1-q)\n\n\nS_n=((64)/(25)(1-(-(5)/(4))^n))/(1-(-(5)/(4)))=(64)/(25)(1-(-(5)/(4))^n):(1+(5)/(4))=(64)/(25)(1-(-(5)/(4))^n):(9)/(4)\n\n=(64)/(25)(1-(-(5)/(4))^n)\cdot(4)/(9)=(256)/(225)\cdot\left(1-\left(-(5)/(4)\right)^n\right)$

$x= (64)/(25) - (16)/(5) +4-5+...\n \na_1= (64)/(25)\ \ \ \wedge \ \ \ a_2= - (16)/(5)\ \ \ \Rightarrow\ \ \ q= (a_2)/(a_1) = (-16)/(5):(64)/(25)= (-16)/(5)\cdot (25)/(64)=- (5)/(4) \n \nx=sum\ of\ the\ infinite\ geometric\ series\n \n$

$x= \lim_(n \to \infty) a_1\cdot (1-q^n)/(1-q) = \lim_(n \to \infty) (64)/(25) \cdot (1-(- (5)/(4))^n )/(1+ (5)/(4) ) =\n \n= \lim_(n \to \infty) (64)/(25) \cdot (4)/(9) \cdot [1-(- (5)/(4))^n]= (256)/(225) +(256)/(225)\cdot \lim_(n \to \infty) (- (5)/(4) )^n\n \nn=2k\ \ \Rightarrow\ \ \ \lim_(n \to \infty) (- (5)/(4) )^n=+\infty\ \ \Rightarrow\ \ \ x\rightarrow+\infty\n \n$

$n=2k+1\ \ \ \Rightarrow\ \ \ \lim_(n \to \infty) (- (5)/(4) )^n=-\infty\ \ \Rightarrow\ \ \ x \rightarrow -\infty$

A 10 inch diameter pumpkin pie is cut into 6 equal servings. What is the area of the top of each piece of pie?

Answers

The area (A) of the whole circle is calculated through the formula, A = πd² / 4. Substituting the given diameter, A = π(10 in)² / 4 = 25π in². The area of the top of each piece is 1/6 of the this area. Thus, the answer is approximately 4.17 in².

Help asap plz and thanks

Answers

Answer:

-49

Step-by-step explanation:

I checked with a calculator so it should be right

Answer:

-49

Step-by-step explanation:

my calculator confirmed it.

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