Select all that apply

Answer:

x = 3, y = -2

Step-by-step explanation:

Solving the bottom equation for y, we have y = 4 - 2x. Substitute that into the top equation, and solve for x.

4x - 3(4 -2x) = 18

4x - 12 + 6x = 18

10x - 12 = 18

10x = 30

x = 3

From this, we have y = 4 - 2(3) = 4 - 6 = -2

Answer:

<ABC= 45 degrees

Angles on a straight line add up to 180

3x+ x= 180

4x=180

x=180÷4

x=45

Answer:

Measure of ABC = 15 degrees.

Step-by-step explanation:

We draw 2  lines parallel  to l and m , one passing through pont C ( n) and the other passing through point D (p).

If < abc = x degrees then the angle below line n = 25 - x. As the one above = x degrees ( alternate to < ABC).

The angle below line p = < DEF 3x degrees (alternate angles)

So as  < CDE = 55:

25 - x + 3x = 55

2x = 30

x = 15.

So < ABC = 15 degrees.

Answer:

The solution to the set of linear equations is:

[tex](5,-4)[/tex]

Step-by-step explanation:

Hey there!

In order to solve this system of equations, we can put the equations equal to each other since both equations are equal to y

[tex]6-2x=-4x+16[/tex]

Now we simplify

[tex]2x=10[/tex] ---> [tex]x=5[/tex]

So now that we know that x is equal to 5, we can find the value of y

let's substitute it in one of the equations

[tex]y=6-2(5)[/tex] ---> [tex]y=-4[/tex]

So now we know that the point where the two equations intersect is:

[tex](5,-4)[/tex]

This is going to be our solution

The graph is in an attachment below

Answer:

9.4

Step-by-step explanation:

(rectangle) shape 1: perimeter of rctangle= 2(l b)

=7

(semicircle)shape 2:perimeter of semicirlce=½ñd+d(ñ=pie)

0.5×ñ×1.4+1.4=3.6

add them

7+3.6=10.6

i hope i was helpful

please consider as brainlest

Answer:

see explanation

Step-by-step explanation:

substitute n = 1, 2 into the sum rule

1² + 2(1) = 1 + 2 = 3 , then

a₁ = 3

2² + 2(2) = 4 + 4 = 8 , then

a₁ + a₂ = 8

3 + a₂ = 8 ( subtract 3 from both sides )

a₂ = 5

then

common difference d = a₂ - a₁ = 5 - 3 = 2

First term is 3 and common difference = 2

Answer:

Step-by-step explanation:

3

opposit side of parallelogram are equal and opposit angles are also equal

Answer:

  √61 ≈ 7.81

Step-by-step explanation:

It appears that the polygon can be enclosed by a rectangle that is 12 units wide and 10 units high. The enclosing circle is the one that will circumscribe that rectange. Its radius is half the length of the diagonal, so is ...

  (1/2)√(12² +10²) = 1/2√244 = √61

The smallest circle that will surround the polygon will have a radius of √61 ≈ 7.81 units.

_____

The Pythagorean theorem is used to find the length of the diagonal. It tells you the square of the diagonal is the sum of the squares of the sides of the rectangle. Our radius is half the diagonal, so is half the square root of the sum of the squares of the side lengths.

Answer:

Step-by-step explanation:

Area of figure I = length * width

                        = 8 *16

                         = 128 cm²

Area of figure II = length * width

                          = 4 * 3

                          = 12 cm²

Trianlge:

base = b =  7 cm

height = 4 + 4 + 6 = 14 cm

[tex]\text{area of triangle =$\dfrac{1}{2}*b*h$}[/tex]

                         [tex]= \dfrac{1}{2} * 7 * 14[/tex]

                        = 7 * 7

                        = 49 cm²

Area of the figure = area of figure  I + area of figure II + area of figure II

                               =  128 + 12 + 49

                                = 189 cm²[tex]\text{area of figure III = \dfrac{1}{2}*b*h}[/tex]

Answer:

189 cm²

area of triangle:

1/2 * base * height

1/2 * 7 * (6+4+4)

49 cm²

area of rectangle:

Length * Width

8 * 10

80 cm²

area of rectangle 2:

Length * Width

6 * 8

48 cm²

area of small rectangle:

Length * Width

4 * 3

12 cm²

total area:

49 + 48 + 12 + 80

189 cm²

Answer:

5.625 cubic inches

Step-by-step explanation:

Answer: x = 16, y = 9

D. x + y = 25

x - y = 7

Step-by-step explanation:

        Let x be a number and y be another. First, I will write the problem out using equations. Then I can solve by graphing, see attached. Their point of intersection is the answer, x = 16 and y = 9.

    The sum of two numbers is 25

x + y = 25

    Their difference is 7

x - y = 7

          D. x + y = 25

          x - y = 7

Answer:

4th option

Step-by-step explanation:

Remember the Quotient Rule:

[tex]\frac{x^{m} }{x^{n} } =x^{m-n}[/tex]

6-2 = 4

So it is the last option

Step-by-step explanation:

could not find the formula ?

the volume is a cylinder is

ground area × height

the ground area is a circle, so we get

pi×r²×h

where r is the radius, h is the height.

therefore

pi×4.5²×2.9 = 184.4900286... ft³ ≈ 184.5 ft³

Answer:

-5+5k-8k-20

-3k-25

-(3k+25)

Answer:

Step-by-step explanation:

(-5 - -25k) - (8k + 20) =

-(18k - 15)

Answer:

-3

Step-by-step explanation:

2x=-6

transpose 2 to LHS

[tex]x = \frac{ - 6}{2 } \\ =x = - 3[/tex]

Answer:

x = - 3

Step-by-step explanation:

2x = - 6 ( divide both sides by 2 )

x = - 3

Answer:

17/4 is 4 ¼ as a mixed fraction

Step-by-step explanation:

hope this helps

Answer: 90

Step-by-step explanation:

add all numbers up:

82+85+89+94+100=450

divide by amount of numbers

450/5=90

Answer:

18

Step-by-step explanation:

Intersecting Secant-Tangent Theorem

The square of the tangent is equal to the product of the external secant segment and the secant.

Given:

AE² = EC · ED

⇒ 12² = 8(18 + x)

⇒ 144 = 144 + 8x

⇒ 0 = 8x

⇒ x = 0

ED = 18 + x

     = 18 + 0

     = 18

Answer:

100 cm square?

Step-by-step explanation:

1 meter square = 100 cm square

Answer:

10,000 cm²

Step-by-step explanation:

m² to cm² conversion

So, the surface area of the prism in cm² is 10,000 cm²

Answer:

Only iris is correct in equation sq. z = 9/25

Answer:

14/10 or 1 2/5

Step-by-step explanation:

Hey there!

In order to simplify this expression, we need to add the numerators and not the denominator since they are the same

14/10 is what you will get or this is also 1 2/5

Answer:

A.

[tex]1 \frac{2}{5} [/tex]

Explanation:

6/10 + 8/ 10 = 7/5

[tex] \frac{6}{10} + \frac{8}{10} = \frac{6 + 8}{10} = \frac{14}{10} = \frac{7}{5} = 1 \frac{2}{5} [/tex]

hope this helps.

Answer:

439.5 million

Step-by-step explanation:

Expand the numbers:

439.5 million = 439500000

484 million = 484000000

439.5 million is smaller because 3 < 8 in the tens of millions place.

Answer:

Firstly, we would have to find out how much is 25% of 32.

So we do this:

32 x 0.25 = 8

Now that we know that 8 is 25 % of 32

We simply add 8 to 32

and get the final answer which is 40

Answer:

$7.20

Step-by-step explanation:

convert 1 1/4 to decimal form.

0.25+1=1.25

9/1.25 =7.20

Answer: .775 lbs

Step-by-step explanation:

7 3/4 _> 7.75

7.75 / 10 = .775

Answer:

6c + 16a = T :)

Step-by-step explanation:

We only know how much the cost for the children is, 6, so we put a variable c after it :)

We only know how much the cost for the adults is, 16, so we put a variable a after it :)

I put T to show a varibale for the total :)

Have an amazing day!!

Please rate and mark brainliest!!

Answer:

2/21 hours per task.

Step-by-step explanation:

2/3 / 7  hours per task

=  2/21.

Answer:

16-25y^2

Step-by-step explanation:

Hey there!

As you know, both 16 and 25 are perfect squares

All the other answers don't have both numbers as perfect sqaures

The population of bacteria after 672 hours is 36000.

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

According to the given question we have

The number of bacteria double is 336 hours.

And, the current population of bacteria is 9,000.

Therefore,

The population of bacteria after 336 hours = 9,000×2 = 18,000

⇒ the population of bacteria after 672 hours  = 18000 × 2 = 36000  

Hence, the population of bacteria after 672 hours is 36000.

Learn more about Unitary method here:

https://brainly.com/question/22056199

#SPJ2

Answer:

Step-by-step explanation: