Check that x=2 and y=5 is a solution of both equations below:
X+2y=12
3x+6y=36 *

Answer:

hyolpotheses people death ate 90 and the significance is their on their hand pls mark me as the brainliset hope it helps you

Answer:

$16.90

Step-by-step explanation:

First you need to find how much the markup is in dollars.

Multiply 13(0.3).

This will give you 3.9.

Then you add this to the original cost of the glasses.

13+3.9= 16.9.

So, the final cost of the glasses is $16.90.

Answer:

Step-by-step explanation:

Given the inequality cosθ>−sinθ, to get the value of [tex]\theta[/tex] that falls within the range π/2≤θ<3π/2, the following steps must be followed;

Step 1;

Divide both sides by cosθ;

cosθ/cosθ>−sinθ/cosθ

1>−sinθ/cosθ

1>-tanθ

Step 2;

Multiplying both sides by -1

-1<tanθ

tanθ>-1

θ>[tex]tan^{-1} -1[/tex]

θ>-45°

Since tan is negative in the second and 4th quadrant;

In the second quadrant θ>180-45

θ>135°

θ>3π/4

in the 4th quadrant, θ>360-45

θ>315°

θ>9π/4

The only value that falls within the range is at when θ>3π/4  

Answer:

D I and IV

Step-by-step explanation:

The opposite of an integer "x" is "-x".

I. The integer is 53.  →  Since the opposite of George's integer is -53, the integer is -(-53) = 53

II. The integer has an absolute value of - 53.  →  The absolute value of 53 is 53.

III. The integer is - 53.  →  It was 53, found in I.

IV. The integer has an absolute value of 53.  →  It has an absolute value of 53, found in II.

Answer:

  C.  √17

Step-by-step explanation:

The radius can be found by solving the given equation at the given point.

__

  (x -1)^2 + (y+1)^2 = r^2 . . . . . . . given equation

  (0 -1)^2 + (3 +1)^2 = r^2 . . . . . . using (x, y) = (0, 3)

  1 +16 = r^2 . . . . . . . . . . . . simplify

  r = √17 . . . . . . . take the square root

The answer is :

x + y ≤ 14

2x + 3y ≤ 18

The inequality for the given statement will be equal to x +y ≤ 18 or,

2x + 3y ≤ 18.

Inequalities are mathematical expressions where neither side is equal. In inequality, as opposed to equations, we compare the two values. Less than (or less than and equal to), larger than (or greater or equal to), or not similar to signs are used in place of the equal sign in between.

As per the given information in the question,

The price of fuel x = $2/gallon

The price of fuel y = $3/gallon

Total money to spend on fuel = $18

Then, the inequality in this situation will be,

x +y ≤ 18 or,

2x + 3y ≤ 18.

To know more about Inequality:

https://brainly.com/question/28823603

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Answer: hi lissette

Step-by-step explanation:

Answer:

Step-by-step explanation:

Annually: 14.21 years

Quarterly: 13.95 years

Daily: 13.86 years

Continuously: 13.86 years

:)

Answer:

The answer is B.

Step-by-step explanation:

You have make y equals to 0 and solve each and every equation one by one :

Option A,

[tex] {x}^{2} + x - 6 = 0 \\ {x}^{2} + 3x - 2x - 6 = 0 \\ x(x + 3) - 2(x + 3) = 0 \\ (x - 2)(x + 3) = 0 \\ x = 2 \: or \: - 3[/tex]

Option B,

[tex] {x}^{2} - x - 6 = 0 \\ {x}^{2} - 3x + 2x - 6 = 0 \\ x(x - 3) + 2(x - 3) = 0 \\ (x + 2)(x - 3) = 0 \\ x = - 2 \: or \: 3[/tex]

Option C,

[tex] {x}^{2} - 5x - 6 = 0 \\ {x}^{2} + x - 6x - 6 = 0 \\ x(x + 1) - 6(x + 1) = 0 \\ (x - 6)(x + 1) = 0 \\ x = 6 \: or \: - 1[/tex]

Option D,

[tex] {x}^{2} + 5x - 6 = 0 \\ {x}^{2} - x + 6x - 6 = 0 \\ x(x - 1) + 6(x - 1) = 0 \\ (x + 6)(x - 1) = 0 \\ x = - 6 \: or \: 1[/tex]

Answer: 0.14

Step-by-step explanation:

1) Find the total #of seniors. To do this add up 25+5+5 = 35.

2)Since we know the number of seniors that work just do 5/35. This simplifies to 0.14 rounded to the nearest hundreth.

Answer:

240 Square Inches

Step-by-step explanation:

See the attached diagram

The Isosceles Triangle based prism consists of two triangles of equal area, to rectangles of equal area and the rectangle at the base.

Therefore:

Surface Area of the Prism =Surface Area of Two Triangular Base+Area of three Rectangles

Area of one Triangular Base=0.5 X 8 x 3 =12 Square inches

Area of Rectangle 1=5 x 12 =60 Square Inch

Area of Rectangle 2=5 x 12 =60 Square Inch

Area of Rectangle 3=8 x 12 =96 Square Inch

Therefore:

Surface Area of the Prism=2(12)+2(60)+96

=240 Square Inches

Answer:

240 in²

Step-by-step explanation:

The prism has an isosceles triangle with the following data:

- Two lengths = 5 inches

- Other length = 8 inches

- Height = 12 inches

Since the prism consist of 2 triangle bases and three rectangular faces, the surface area (SA) of the prism can be calculated as follows:

[tex] SA = SA_{b1} + SA_{b2} + SA_{f1} + SA_{f2} + SA_{f3} [/tex]

Where:

[tex]SA_{b1}[/tex] and [tex]SA_{b2}[/tex] are the surface areas of the two triangle bases.

[tex]SA_{f1}[/tex], [tex]SA_{f2}[/tex] and [tex]SA_{f3}[/tex]: are the surface areas of the three rectangular faces.  

The surface area of the triangle bases can be calculated as follows:

[tex] SA_{b1} = SA_{b2} = \frac{b*h}{2} [/tex]

Where:

b: is the base = lenght of 8 inches

h: is the height = 3 inches

[tex] SA_{b1} = SA_{b2} = \frac{8*3}{2} = 12 in^{2} [/tex]

Now, we need to find the surface area of the rectangular faces using the following data:

Rectangular face 1 = rectangular face 2:  

- One side = 12 inches

- Other side = 5 inches

Rectangular face 3:

- One side = 12 inches

- Other side = 8 inches

Hence, the SA of the rectangular face 1 and rectangular face 2 is:

[tex] SA_{f1} = SA_{f2} = 12*5 = 60 in^{2} [/tex]

And the SA of the rectangular face 3 is:

[tex] SA_{f3} = 12*8 = 96 in^{2} [/tex]

Finally, the SA of the prism is:

[tex] SA = SA_{b1} + SA_{b2} + SA_{f1} + SA_{f2} + SA_{f3} [/tex]

[tex] SA = 2*12 + 2*60 + 96 = 240 in^{2} [/tex]      

Therefore, the surface area of the prism is 240 in².

I hope it helps you!

Step-by-step explanation:

use substitution method so it will now look like

8x + 5(-4x) = 24

8x + (-20x) = 24

-12x = 24 (divide both sides by 12)

-x = 2 (multiply both sides by negative 1)

x = -2

substitute to find y

y= -4(-2)

=8

Answer:

[tex]x=-2\\y=8[/tex]

Step-by-step explanation:

[tex]8x+5y=24\\y=-4x[/tex]

We already have y in terms of, so the easiest way to do is by plugging that value in the first equation.

[tex]8x+5y=24\\8x+5(-4x)=24\\8x-20x=24\\-12x=24\\x=\frac{24}{-12} \\x=-2[/tex]

After having found the value of x, replace it in the second equation to find y.

[tex]y=-4(-2)\\y=8[/tex]

Answer:24

Step-by-step explanation:

Answer:

The answer is exponentially.

Step-by-step explanation:

Because your X goes up by one while your f(x) goes up by three for every X, which makes it exponential.

Answer:

exponentially

Step-by-step explanation:

Answer:

Step-by-step explanation:I don't say you must have to mark my ans as brainliest but my friend if it has really helped you plz don't forget to thank me...

Answer:

420

Step-by-step explanation:

if we add 30 to each of the length of speech, we get 420 seconds

Answer:

4/3

Step-by-step explanation:

Question :

[tex]\frac{A}{B} = \frac{6}{7}[/tex]

[tex]\frac{B}{C} = \frac{14}{9}[/tex]

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

try to make B same number with  2 fraction

[tex]\frac{A}{B} = \frac{6}{7} = \frac{12}{14}[/tex]

so => B = 14

A = 12

C = 9

[tex]\frac{A}{C} = \frac{12}{9} = \frac{4}{3}[/tex]

Hope this helps ^-^

Answer:

Step-by-step explanation:

60

Answer: 2 feets

Step-by-step explanation:

Recommended density = 7 fish/ ft^3

If recommended density guideline is followed:

Number of fishes in aquarium = 42

Length of aquarium = 3ft

Width = 1ft

Height =?

Volume of aquarium = Length × width × height

Volume = 3 × 1 × h = (3ft^2 × h)

Therefore ;

If

1ft^3 = 7 fishes

x ft^3 = 42 fishes

Cross multiply

7(x)ft^3 = 42 fishes

x ft^3 = (42÷7)

x ft^3 = 6

Therefore volume of the aquarium with 42 fishes is 6ft^3

Volume = (3ft^2 × h)

6ft^3 = 3ft^2 × h

h = (6ft^3) / (3ft^2)

h = 2ft

Answer:

17.5

Step-by-step explanation:

2:5

7 divided by 2 is 3.5

The difference is 3.5, now times each side by 3.5

7 inches:17.5 miles

Answer:

Probability tells you the likelihood of an event happening

Answer:

90%

Step-by-step explanation:

50%×2 100%

5%×2 10%

45%×2 90%

Answer:

Is a tangent

Step-by-step explanation:

* Great question by the way *

~ By definition, a tangent to circle is a straight line, presently perpendicular to a radius if one. In this case tangent AB should be perpendicular to the radius. If we were to call the center O, we would say AB should be perpendicular to OA. ~

1. Now let us say at the moment that AB is a tangent. If that is so, it should be that m∠A = 90 degrees ( ° ), provided AB is ⊥ to OA by definition.

2. Now the triangle ABO is a right triangle, and with that is should be that Pythagorean Theorem is applied. This can help us prove if AB is a tangent or not. If Pythagorean Theorem is not applicable it would mean ABO is not a right angle triangle, that AB is not ⊥ to OA, and thus can't be a tangent.

3. Let us say x ⇒ side OA, and that side BO = 9 + 8 + 17:

AB^2 + OA^2  =  BO^2,

15^2 + x^2 = 17^2,

x = 8

4. Now there are two radii present, OA is only one of them. As radii are ≅, OA = other radii, 8 = 8

5. This proves that Pythagorean Theorem is applicable, that ABO is a right triangle, that m∠A = 90°, and that by definition AB is a tangent

Answer:

[tex]x\approx 422.4[/tex]

Step-by-step explanation:

Assuming 'x'  the distance helicopter needs to fly to be directly over the tower.

It is given that a helicopter flying 3590 feet above ground spots the top of a 150-foot tall cell phone tower at an angle of depression of 83°.

From attachment that helicopter, tower and angle of depression forms a right triangle.

As height of tower is 150 feet, so the vertical distance between helicopter and tower will be: 3590-150=3440 feet.

Also, the side with length 3590-150 feet is opposite and side x is adjacent side to 83° angle.

As the tangent relates the opposite side of a right triangle to its adjacent  side, so we will use tangent to find the length of x.

[tex]\text{Tan}=\frac{\text{Opposite}}{\text{Adjacent}}[/tex]

[tex]\text{Tan}(83^o)=\frac{3590-150}{x}\\[/tex]

[tex]\text{Tan}(83^o)=\frac{3440}{x}[/tex]

[tex]x=\frac{3440}{\text{Tan}(83^o)}[/tex]=>[tex]x=\frac{3440}{8.14434}[/tex]

[tex]x\approx 422.4[/tex]

Thus, the helicopter must fly approximately 422.4 feet to be directly over the tower.  

Answer:

Option (3)

Step-by-step explanation:

The ramp shown in the figure is in the shape of a triangular prism.

Therefore, total surface area of this ramp = Area of the triangular sides + Area of the base + Area of the vertical side + Area of the slanting side

Area of the triangular sides = [tex]2[\frac{1}{2}(Base)\times (h)][/tex]

                                              = bh

                                              = 4×3

                                              = 12 square feet

Area of the rectangular base = Length × Width

                                                = 4 × 8

                                                = 32 square feet

Area of the vertical side = Length × Width

                                        = 3 × 8

                                        = 24 square feet

Area of the slanting side = Length × width

                                         = 8×5

                                         = 40 square feet

Total surface area = 12 + 32 + 24 + 40

                              = 108 square feet

Option (3) will be the answer.

Answer:

C (108)  

Im on the test right now  ~edge~

Answer and Step-by-step explanation:

As we know that

[tex]Perimeter\ of\ rectangle = 2\times (length + breadth)[/tex]

Given that

The perimeter of a rectangle is  16  inches i.e length and breadth should be measured by that way in which the perimeter of rectangle comes 16 inches

We considered four way of measuring the perimeter

Length  Width  Perimeter

    1            7           16

    2            6          16

    3            5           16

    4            4           16

Simple it is as we multiply the 8 by 2 it gives 16 inches and the same is displayed above

So there are four combinations of 8 how it came.

Answer:

A

Step-by-step explanation:

Edgenuity

Answer:

( x + 8 )( x - 8 ); None of the above

Step-by-step explanation:

Apply quadratic formula a^2 - b^2 = ( a + b )( a - b );

x^2 - 64 ⇒

x^2 - 8^2 ⇒

Answer: ( x + 8 )( x - 8 ); None of the above

Answer:

-1

Step-by-step explanation:

3x-6=7x-2

Collect the like terms

3x-7x=6-2

-4x = 4

x = -1

Answer:

The percentage is 70%

Answer:

the answer is 70%

Step-by-step explanation:

Let's consider 42 as x% of 60.

x% of 60 = 42 (x% means x/100)

(x/100) * 60 = 42

60x/100 = 42

60x = 42 * 100 = 4200

x = 4200

Answer:

Domain: 1,2,4,8

Range: 2,4,8

Step-by-step explanation:

The Domain is always the "X"  or input. Range is always the "Y" or output. As you can see here, there are same numbers in the domain and range. You put that as one number. Therefore, the above numbers are the answer.

Answer:

In this problem, I can not tell what is V, so I will answer it in a general way.

A polynomial is something of the form:

a*x^5 + b*x^4 + c*x^3 + d*x^2 + e*x + f

a, b, c, d, e, and f are real numbers and constant.

Where the degree of the polynomial is equal to the greatest power (in this case 5).

You write:

4x^2 + 3Vx + 5

Now, if V is a real number, then we have that this is a polynomial of degree 2.

Because we can write this as:

4*x^2 + (3V)*x + 5

So the answer is true.

Now, if V is a variable or an operation, the answer will be false.