All categories

3 years ago

(7n+4) +(8n-1) please solve this

Mathematics

2 answers:

monitta3 years ago

4 0

Answer:

3(5n+1)

Step-by-step explanation:

7n+4+8n-1

15n+3

3(5n+1)

meriva3 years ago

3 0

Answer:

n= -6

Step-by-step explanation:

Simplifying

4 + -7n = -1(8n + 4) + 2

Reorder the terms:

4 + -7n = -1(4 + 8n) + 2

4 + -7n = (4 * -1 + 8n * -1) + 2

4 + -7n = (-4 + -8n) + 2

Reorder the terms:

4 + -7n = -4 + 2 + -8n

Combine like terms: -4 + 2 = -2

4 + -7n = -2 + -8n

Solving

4 + -7n = -2 + -8n

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '8n' to each side of the equation.

4 + -7n + 8n = -2 + -8n + 8n

Combine like terms: -7n + 8n = 1n

4 + 1n = -2 + -8n + 8n

Combine like terms: -8n + 8n = 0

4 + 1n = -2 + 0

4 + 1n = -2

Add '-4' to each side of the equation.

4 + -4 + 1n = -2 + -4

Combine like terms: 4 + -4 = 0

0 + 1n = -2 + -4

1n = -2 + -4

Combine like terms: -2 + -4 = -6

1n = -6

Divide each side by '1'.

n = -6

Simplifying

n = -6

You might be interested in

PLEASE HELPPP (NO LINKS) (NO LINKS) (NO LINKS)

rosijanka [135]

Answer:

B, B, C

Step-by-step explanation:

Shirts cost $20 each and ties cost $12 each.

Expression for the cost:

20s + 12t

Correct choice is B

An expression that represents 40% of a number is:

40*n/100 = 0.4n

Correct choice is B. False

t = -2, x = 3 and z = 5

4z + 3x − t =
4*5 + 3*3 - (-2) =
20 + 9 + 2 =
31

Correct choice is C. 31

3 0

3 years ago

Read 2 more answers

When the following expression is written in simplest form, what is the coefficient of the variable term? -2.5y + 8y - 10.5y

LUCKY_DIMON [66]

Answer:

Option 1 is correct.

-5

Step-by-step explanation:

Given:

The given expression is.

$=-2.5y+8y-10.5y$

Write the given expression in simplest form.

$=-2.5y+8y-10.5y$

Add negative term of y.

$=-13y+8y$

$=-5y$

The simplest form of given expression is $=-5y$

Therefore, the coefficient of the variable term is -5

7 0

4 years ago

The ratio of tulips to roses is 17/11. If there are 3444 tulips and roses in the garden, how many are tulips?

irga5000 [103]

You can also approach it this way:

28 flowers times n = 3444

so n = 123

11 x 123 = roses, 17 x 123 = tulips.

Those 2 products should add up to 3444. They do. :-)

gotchaaaaaa

ahhh

thanxxx

5 0

3 years ago

Y = x2+6x+8 and y = (x+2)(x+4) both define the same quadratic function. Without graphing, identify the x- and y-intercepts of th

mash [69]

Answer:

x-int:(-2,0)(-4,0) . y-int:(0,8)

Step-by-step explanation:

y = x2+6x+8 and y = (x+2)(x+4)

x-int:

x+2=0

x= -2

(-2,0)

x-int:

x+4=0

x=-4

(-4,0)

y-int: plug 0 for x

y=(0+2)(0+4)

y=8

(0,8)

3 0

3 years ago

The quotient rule for exponents states that bm bn=_______, b≠0 . When dividing exponential expressions with the same nonzero b

wariber [46]

Answer:

The quotient rule for exponents states that $b^{m}\div b^{n}=b^{m-n}$ .

When dividing exponential expressions with the same nonzero base, subtract the exponents.

Step-by-step explanation:

Some rules to solve exponents are:

$x^{0}=1$
$(x^{m})^{n}=x^{mn}$
$x^{-n}=\frac{1}{x^{n}}$
$x^{m}\cdot x^{n}=x^{m+n}$
$\frac{x^{m}}{x^{n}}=x^{m-n}$

The quotient rule for exponents states that:

$b^{m}\div b^{n}=b^{m-n}$ .

When dividing exponential expressions with the same nonzero base, subtract the exponents.

3 0

3 years ago