All categories

3 years ago

(6 + 5y)3 Multiply the algebraic expressions using a Special Product Formula, and simplify.

Mathematics

1 answer:

Kruka [31]3 years ago

7 0

Hello.

The answer is: 15y+18

(6+5y)(3)

=(6+5y)(3)

=(6)(3)+(5y)(3)

=18+15y

=15y+18

Have a nice day

You might be interested in

Please Answer Quick 70 Points !

Kipish [7]

Answer:

The ordered pair (7, 19) is a solution to the first equation because it makes the first equation true

The ordered pair (7, 19) is not a solution to the system because it makes at least one of the equations false

Step-by-step explanation:

we have

$2x-y=-5$ -----> First equation

$x+3y=22$ -----> Second equation

Solve the system of equations by graphing

Remember that the solution of the system is the intersection point both graphs

The solution is the point (1,7)

The ordered pair (7,19) lie on the first line, so is a solution of the first equation

see the attached figure

<u><em>Verify each statement</em></u>

case 1) The ordered pair (7, 19) is a solution to the first equation because it makes the first equation true

The statement is true

case 2) The ordered pair (7, 19) is a solution to the second equation because it makes the second equation true

The statement is false, because the ordered pair (7,19) not lie on the second line

case 3) The ordered pair (7, 19) is not a solution to the system because it makes at least one of the equations false

The statement is true

case 4) The ordered pair (7, 19) is a solution to the system because it makes both equations true

The statement is false,because it makes only the first equation true

6 0

3 years ago

What is the radius of the cone ? I need help

Mariulka [41]

Answer:

Step-by-step explanation:

pi*r^2

just put each number where r is to find out the answer

7 0

3 years ago

How do l do this I’m so confused

Anika [276]

Answer:

$967.6cm^{2} (1 d.p)$

Step-by-step explanation:

Total Surface Area of Cylinder = $2\pi rh+2\pi r^{2}$

Given from the question, r = 7 cm and h = 15cm

Lets Substitute r and h into the formula to find the Total Surface Area of the cylinder.

Total Surface Area of Cylinder = $2\pi (7)(15)+2\pi (7)^{2} \\=210\pi +98\pi \\=308\pi cm^{2} \\=967.6cm^{2} (1 d.p)$

7 0

2 years ago

Today the ratio of Elinor's age to her mother's age is 3:8. After 15 years, the ratio will become 6:11. What is Elinor's age tod

amm1812

X=Elinor´s age today.
y=Mother´s age today.
(x+15)=Elinor´s age after 15 years.
(y+15)=Mohter´s age after 15 years.

We can suggest this systemen of equations:
x/y=3/8 ⇒x=3y/8
(x+15)/(y+15)=6/11 ⇒11(x+15)=6(y+15)

Finally, we´ll have the following system:
x=3y/8
11(x+15)=6(y+15)

We can solve this system of equations by substitution method:
11[(3y/8)+15)=6(y+15)
11[(3y+120)/8)=6y+90
33y+1320=8(6y+90)
33y+1320=48y+720
33y-48y=720-1320
-15y=-600
y=-600/-15
y=40

We find out the value of "x";
x=3y/8
x=3(40)/8
x=120/8
x=15

Answer: Elinor is 15 years old.

8 0

3 years ago

Last question I need i have gotten everything else please help me if you can

Goryan [66]

Answer:

There are 39 people in the Filmmaking club and 25 in the Yearbook Club

X = 39

39x + 25y = 64

Step-by-step explanation:

I really hope this is right, it was kinda confusing! Sorry if I got it wrong!!

3 0

3 years ago

Read 2 more answers