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Talja [164]
3 years ago
10

Please show work 3d – 4 + d = 8d – (-12)

Mathematics
2 answers:
balandron [24]3 years ago
4 0

Answer:

d = -4

Step-by-step explanation:

3d – 4 + d = 8d – (-12)

3d - 4 + d = 8d + 12

4d - 4 = 8d + 12

(4d - 4d) - 4 = (8d - 4d) + 12

-4 = 4d + 12

-4 - 12 = 4d (+ 12 - 12)

-16 = 4d

-16/4 = 4d/4

d = -4

igomit [66]3 years ago
4 0

Answer:

d= -4

Step-by-step explanation:

3d- 4 +d = 8d + 12

4d - 4 = 8d + 12

4d = 8d + 16

-4d = 16

d= -4

Check

-12 - 4 - 4 = -32 + 12

-20 = -20

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Joey can mow the lawn in 40 minutes and Pet can mow the lawn in 60 minutes. How long will it take for them to mow the lawn toget
In-s [12.5K]

Answer:

It will take 100 minutes (an hour and 40 mins)

Step-by-step explanation:

Just add 60 and 40 and you will get 100 mins.

6 0
3 years ago
Hey:) can you please help me posted picture of question
PolarNik [594]
Answer:
x¹³ - x⁹ - 9x⁸ + 9x⁴

Explanation:
Before we begin, remember the following:
xᵃ * xᵇ = xᵃ⁺ᵇ

Now, for the given:
To answer the question, we will simply multiply each term from the first bracket by each term from the second bracket and then combine like terms to get the final expression.

This can be done as follows:
(x⁸ - x⁴)(x⁵ - 9)
x⁸(x⁵) + x⁸(-9) - x⁴(x⁵) - x⁴(-9)
x¹³ - 9x⁸ - x⁹ + 9x⁴

Rearrange in order of decreasing powers, we will end up with:
x¹³ - x⁹ - 9x⁸ + 9x⁴

Hope this helps :)
5 0
3 years ago
Read 2 more answers
Factor the polynomial completely: 16t*2-24t+9
romanna [79]

the factord form is =32t−24t+<span>9</span>

<span>equals =</span>8t+9

6 0
4 years ago
claudia earns overtime pay when she works more then 40 hours in a week how many hours of overtime pay did she work for the week
Bingel [31]
Ummmmmm is that all the information that you have about it
3 0
3 years ago
Which model represents the factors of 4x^2-9
dsp73

The model (x+a)(x-a) will represents the factors of 4x²-9 as (2x+3)(2x-3).

<h3>What are the quadratic equations in one variable completing the squares method?</h3>

The "completing the squares" method aims to construct a quadratic equation of the form where the x variable is entirely covered by a single squared term, which is the square of a linear expression in x, as the name suggests.

The quadratic equation can resemble this:

x²-a² = (x+a)(x-a)

Given equation;

⇒4x²-9

⇒(2x)²-3²

The equation can be modeled as;

(2x+3)(2x-3)

Hence the model (x+a)(x-b) will represents the factors of 4x²-9 as (2x+3)(2x-3).

To learn more about completing the squares method refer to:

brainly.com/question/16800259

#SPJ1

8 0
2 years ago
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