3 years ago

3) 6n– 7n – 5m?n – 7n + 2m + 6mn - 7n + 2m + 6m?n

Mathematics

1 answer:

Drupady [299]3 years ago

5 0

Answer:

1)-n-5m

2)-13n+10m+6mn

Step-by-step explanation:

1) (6n-7n)-5m= -n-5m

2)(n-7n-7n)+(2m+2m+6m)+6mn= -13n+10m+6mn

You might be interested in

Standardized Test Practice

Ulleksa [173]

Answer:

8x+6y=48

x+y=7

multiply bottom equation by 6:

8x+6y=48

6x+6y=42

subtract equations:

2x=6

divide 6 by 2:

x=3

therefore:

y=4

6 0

3 years ago

Read 2 more answers

Three times a number t minus twelve equals forty

tekilochka [14]

3 · t - 12 = 40

3t - 12 = 40 |add 12 to both sides

3t = 52 |divide both sides by 3

t = 52/3

t = 17 1/3

5 0

3 years ago

Identify the vertex and zeros of the function.

kirza4 [7]

Answer:

zeros: x=-6, x=2

Vertex: (-2,-16)

Step-by-step explanation:

try using math-way

5 0

3 years ago

The base of an isosceles triangle is a fourth as long as the two equal sides. write the perimeter of the triangle as a function

jeka57 [31]

Set the length of the base as x, the two equal sides are then 4x each, so the perimeter is x+4x+4x=9x

5 0

3 years ago

The total surface area of a cube is 96cm2, find its volume.

Setler [38]

Answer:

$\huge\boxed{V=64cm^3}$

Step-by-step explanation:

The formula of a surface area of a cube:

$SA=6a^2$

The formula of a volume of a cube:

$V=a^3$

We have

$SA=96cm^2$

Calculate the edge length (<em>a</em>).

$6a^2=96$ <em>divide both sides by 6</em>

$a^2=16\to a=\sqrt{16}\\\\a=4(cm)$

Calculate the volume of a cube:

$V=4^3=64(cm^3)$

6 0

3 years ago