PLEASE HELP!! WILL AWARD BRAINLIEST!!

9514 1404 393

Answer:

  (x, y) = (12, -12)

Step-by-step explanation:

The two equations can be added to solve for x.

  (-5x -5y) +(6x +5y) = (0) +(12)

  x = 12 . . . . . . . . simplify

  -5(12) -5(y) = 0 . . . substitute into the first equation

  12 +y = 0 . . . . . . . divide by -5

  y = -12 . . . . . . . . subtract 12

The solution is (x, y) = (12, -12).

Answer:

Restrict values of  x  to .  Then the surface area function is one-to-one and has an inverse.

Write  y  instead of S(x).  Interchange  x  and  y, then solve for  y.

This function could be used to find the edge of a cube with a given surface area.  For example, if the area is  x = 54, then the edge is

Step-by-step explanation:

Answer:

ans is nothing

plz its is a jock

Answer:

32

Step-by-step explanation:

Answer:

1. If x is under a square root then x cannot equal a negative number. If x is in the denominator of a fraction then x cannot equal zero.

2. ax2 + bx + c

Step-by-step explanation: Hope this helps :)

Answer:

103 chairs

Step-by-step explanation:

cost = fee + cost per chair * number of chairs

410 = 100 + 3*c

Subtract 100 from each side

410-100 = 100+3c-100

310 = 3c

Divide by 3

310/3 = 3c/3

103.3=c

We cannot rent part of a chair so we round down

103 chairs

Answer:

I think 3 chairs. (sorry, i read the equation wrong)

Step-by-step explanation:

Answer:

Step-by-step explanation:

cost of 8 pencils=16

cost of 1 pencil=16/8

=Rs 2

cost of 5 pencil=5*2

=Rs 10

Answer:

Step-by-step explanation:

B

Answer:

the second choice

Step-by-step explanation:

Answer:

90 mph

Step-by-step explanation:

To get miles per hour ([tex]m/h[/tex]), we just need to divide. [tex]360/4[/tex] gives us [tex]90/1[/tex], meaning the train travelled 90 miles in one hour. This is the same as going 90 mph. Hope that explained things :)

Answer:

twenty-seven dollars

Step-by-step explanation:

0.6×$45=$27

Answer:

-25

Step-by-step explanation:

[tex]-35[/tex] · [tex](\frac{5}{7})[/tex]

[tex]-\frac{175}{7}[/tex]        Multiply the whole number by the numerator

-25         Then simplify by dividing 175 ÷ 7

Answer:

[tex]a_{n}[/tex] = - 3n - 3

Step-by-step explanation:

The nth term of an arithmetic sequence is

[tex]a_{n}[/tex] = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - 6 and d = a₂ - a₁ = - 9 - (- 6) = - 9 + 6 = - 3 , then

[tex]a_{n}[/tex] = - 6 - 3(n - 1) = - 6 - 3n + 3 = - 3n - 3

Answer:

r = 5

Step-by-step explanation:

12 - 1/5r = 2r + 1

12 - 0.2r = 2r + 1

12 - 0.2r + 0.2r = 2r + 0.2r + 1

12 = 2.2r + 1

12 - 1 = 2.2r + 1 - 1

2.2r = 11

2.2r ÷ 2.2 = 11 ÷ 2.2

r = 5

Answer:

r = 5

Step-by-step explanation:

12- 1/5r = 2r + 1

12 = 11/5r + 1

5(11) = (11/5r)5

55 = 11r

r = 5

Answer:

1237t - 289

Step-by-step explanation:

Answer:

x=3

Step-by-step explanation:

15/x=10/2

Simplifying the right side

15/x = 5

Multiply each side by x

15/x *x = 5x

15 = 5x

Divide each side by 5

15/5 = 5x/5

3 =x

Answer:

The last one

Step-by-step explanation:

[tex]x^3+1=0[/tex]

Subtract 1 from both sides

[tex]x^3+1-1=0-1[/tex]

simplify

[tex]x^3=-1[/tex]

[tex]\mathrm{For\:}x^3=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt[3]{f\left(a\right)},\:\sqrt[3]{f\left(a\right)}\frac{-1-\sqrt{3}i}{2},\:\sqrt[3]{f\left(a\right)}\frac{-1+\sqrt{3}i}{2}[/tex]

[tex]x=\sqrt[3]{-1},\:x=\sqrt[3]{-1}\frac{-1+\sqrt{3}i}{2},\:x=\sqrt[3]{-1}\frac{-1-\sqrt{3}i}{2}[/tex]

simplify

[tex]x=-1,\:x=\frac{1}{2}-i\frac{\sqrt{3}}{2},\:x=\frac{1}{2}+i\frac{\sqrt{3}}{2}[/tex]

(That's basically the last one but in a different way of writing it)

Answer:

The last one

Step-by-step explanation:

Subtract 1 from both sides

simplify

simplify

Answer:

A(7,4)

Step-by-step explanation:

-2/3 is the slope and the slope is the rise over the run, and we know it passes through the point (1,8).

Next, we can create a chart/table

X int-1+3=4, 4+3=7

Y int-8-2=6,6-2=4

1st point: (4,6)

2nd point: (7,4)

Hope I helped, have a nice day :)

Answer:

2√2 I think

Step-by-step explanation:

Answer:

531.167 ft²

Step-by-step explanation:

Given data

Dimension of pool

Diameter =24ft

Radius =12ft

If the cover must hang by 1ft around, then the diameter is 26ft

Radius =13ft

Area of cover = πr²

Substitute

Area = 3.142*13²

Area =3.143*169

Area =531.167 ft²

Hence the minimum area is 531.167 ft²

Answer:

B

Step-by-step explanation:

It is linear and increasing.

If it is linear, it is increasing at a constant rate with a straight line.

Exponential means it is a curved line and would have an equation like f(x)=5^x

If it was decreasing, it would have a negative slope, such as -2x +10

Answer:

domain = 0 < x < infinity / range = y < 4

Step-by-step explanation:

Answer:

The 3rd choice.

Step-by-step explanation:

The third choice has what it takes to be a scientific notation.

Answer:

if these are points on a graph, then the point (3,-2) has y-value 2 below the point at (3,0).

Step-by-step explanation:

Answer:

47yd

Step-by-step explanation:

4 + 15 + 15 + 13 = 47yd

Answer:

47 yd

Step-by-step explanation:

The perimeter is the distance around a polygon. It can be found by adding up all the lengths of the sides.

4 + 15 + 15 + 13

= 47

Answer:

15 oz

Step-by-step explanation:

Answer:

2 degrees / hour

Step-by-step explanation:

The average rate of change is

f(x2) - f(x1)

---------------

x2 -x1

We know that x2 is 6pm so f(x2) is 101

We know that x1 is 10 am so f(x1) is 85

101 -85

--------------

6 pm - 10 am

16 degrees

---------------

8 hours

2 degrees / hour

Answer:

We have this proportion....

36 / 12 = x / 9 where x is the model door height

Cross-multiply

36*9 = 12 * x

324 = 12 *x divide both sides by 12

27 = x and that's the model height in centimeters