Which algebraic expression is equivalent to the expression below? 6x+15y A. 3(2x - 5y) B. 3(5x - 2y) C. 3(2x + 5y) D. 3(5x + 2y)

Answer:

(x,y)=(4,6)

Step-by-step explanation:

3x+4y=36

y=-1/2 x+8

step 1: substitute the value of y

[tex]3x+4(-\frac{1}{2}x+8)=36[/tex]

step 2: solve equation for x

[tex]3x+4(-\frac{1}{2}x+8)=36[/tex]

3x-2x+32=36

x+32=36

x=36-32

x=4

step 3: substitute the value of x

[tex]y=-\frac{1}{2} (4)+8[/tex]

Step 4: solve equation for y

[tex]y=-\frac{1}{2} (4)+8[/tex]

y=-2+8

y=6

there for the answer is

(x,y)=(4,6)

Answer:

a) 1,500 square yards

Step-by-step explanation:

you would do 30 times 20 which is 900.  then you would do 50 times 9 which is 450.  you would have to do that twice. then you would add 900 + 450 + 450 =  1,500

rate and like my answer plz.

hope this helped.

..

.

.

.

.

.

.

.

.

.

.

.

.

Answer:

A 1500 Square yards

Step-by-step explanation:

right on edge

Answer:

70

Step-by-step explanation:

just trust me i had this question and i had a 100

Answer:

30 cm is the perimeter.

Step-by-step explanation:

To find the perimeter of this figure, add up all the lengths of the sides:

6 cm

4 cm

9.5 cm

4 cm

6.5 cm

-----------

30 cm is the perimeter.

Answer:

The perimeter will be 30 cm

Step-by-step explanation:

The perimeter is the distance around the composite figure.

The perimeter= 9.5+6.5+4+4+6=30 cm

perimeter=30

Answer: Answer:the person entering the room is 10 years oldStep-by-step explanation:x / 5 = 40x = 40 * 5x = 200so the total of all the ages of 5 people

Step-by-step explanation:

Answer:

k=1/4

Step-by-step explanation:

x² - 5kx+ k=0  ....(1)

suppose 2 roots: a and 4a

(x-a)(x-4a)=0

x² - 5ax + 4a² = 0 ....(2)

compare (1) and (2): -5a = -5k              a=k

4a² = k                4a² = a   (substitute)

a(4a-1) = 0

a = 0 or a = 1/4        (if a=0   k=0 and x=0 is not the solution)

a = 1/4      k = 1/4

(a₂ = 1/4 * 4 = 1)

Answer:

k = 1/4.

Step-by-step explanation:

Let the roots be  r and 4r   and using the fact that sum of the roots = -b/a and product = a/c, we have:

r + 4r = -(-5k)

r*4r = k

5r = 5k

4r^2 = k

From the 3rd equation:

r = k, therefore:

4k^2 = k

4k = 1

k = 1/4.

Answer:

C represents a function

Answer:

81.64

Step-by-step explanation:

formula for volume of a cylinder is pi times radius squared times height

the radius here is 2, and the height is 6.5

plug the numbers into the formula and you get pi(2^2)(6.5), which is 81.64

Answer:

that's correct... 8√3 is the correct answer

Step-by-step explanation:

sin 30°=1/2

1/2=4√3/x

simplify and you're done ☺

Answer:

C = 8squareroot3

Step-by-step explanation:

x = 4squareroot3 * 2

Answer:

b is 6

c is 8

Step-by-step explanation:

i was close i have 0.8

and 0.7

Answer:

12.5 sq units for the first answer is correct.

The second answer is 6.

The third answer is 8.

Step-by-step explanation:

The formula of a triangle is bh/2. Plug in the base and height for b and h then multiply.

1st box:

(5)(5)/2

25/2

12.5 Correct

2nd box:

(4)(3)/2

12/2

6 Final Answer

3rd box:

(4)(4)/2

16/2

8 Final Answer

Answer:

3

Step-by-step explanation:

Answer:6 1/4

Step-by-step explanation:

Answer:

9/24

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

Six times negative three is negative eighteen and that plus four is negative 14

Answer: A

Step-by-step explanation:

Platooo

Answer:

y = 3x - 2

3x - y = 2

y = 2(x + 3)

Step-by-step explanation:

y = the larger number

x = the smaller number

A larger number is double the sum of 3 and a smaller number

y = 2(x + 3)

y = 6 + 2x

The larger number is 2 less than 3 times the smaller number.

y = 3x - 2

Make -2 the subject

y - 3x = -2

Make 2 the subject

y = 3x - 2

y - 3x = -2

(y - 3x) * -1 = -2 * -1

-y + 3x = 2

3x - y = 2

The answers:

y = 3x - 2

3x - y = 2

y = 2(x + 3)

Answer:

The starting height of the raiders is 39 meters.

Step-by-step explanation:

Physically speaking, a free fall motion is an uniformly accelerated motion due to gravity. Mathematically, speaking the equation of motion for the height of an object under free fall is a second order polynomial (quadratic function).

Let [tex]h(t) = -9.8\cdot t^{2}-5\cdot t + 39[/tex] be the height of the riders, in meters, the starting height is the height evaluated at [tex]t = 0\,s.[/tex] Hence, we proceed to the determined the required data by direct evaluation:

[tex]h(0) = -9.8\cdot (0)^{2}-5\cdot (0) +39[/tex]

[tex]h(0) = 39[/tex]

The starting height of the raiders is 39 meters above the ground.

Answer:

Marketing helps producers to decide what products to produce and when to produce them. Marketing also helps consumers by letting them know what products are available at what price. When done well, it leads to greater satisfaction for consumers and higher profits for producers.

Step-by-step explanation:

hope this helps!

Answer:

C because not all rhombuses are squares

Find where the curve intersects the x-axis; this happens when y = 0:

y = t - t ² = 0   →   t (1 - t ) = 0   →   t = 0, t = 1

Then the area of the bounded region is

[tex]\displaystyle\int_0^1 y(t) x'(t)\,\mathrm dt=\int_0^1 (t-t^2)e^t\,\mathrm dt=\boxed{3-e}[/tex]

(you can compute the integral by parts)

Answer:

$39.95 + $1.99x

Step-by-step explanation:

Cost of shoes = $39.95

Cost per pair of socks = $1.99

Number of socks pairs purchased = x

Total amout spent = (cost of shoes + cost of x pairs of socks)

Cost of x pairs of socks = $1.99 * x = $1.99x

Total amount spent = $39.95 + $1.99x

Answer:

$39.95 + $1.99x

Step-by-step explanation:

Answer:

The famous irrational numbers consist of Pi, Euler's number, Golden ratio. Many square roots and cube roots numbers are also irrational, but not all of them. For example, √3 is an irrational number but √4 is a rational number. Because 4 is a perfect square, such as 4 = 2 x 2 and √4 = 2, which is a rational number.

Step-by-step explanation:

examples of irrational numbers is 0.2, 0.5 and 0.9

Answer:

2. X^2-7x+3

Step-by-step explanation:

Answer:

x= 10, x=1

Step-by-step explanation:

(x-1)(x-10)=0

then solve for x

Answer:

Blue square

Step-by-step explanation:

looking like rhombus because right angle is 90 degrees and a square has 4 right angles

Answer:

110°

Step-by-step explanation:

Answer:

110 degrees

Step-by-step explanation: