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zlopas [31]
3 years ago
7

Algebra: solve for x. show work to justify your answer. ​

Mathematics
2 answers:
Kaylis [27]3 years ago
6 0
Both bc they justify the number problems
Vinil7 [7]3 years ago
5 0

Ok so to make this easier which problem are we working on? 9, 10, or 11? cause before I do the hard work, I need to know

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2) Lisa is ordering sand from the Internet, On one site she found sand on sale for
Anastasy [175]

For this case we must find the unit cost (dollars per pound) of each site and then compare.

We take into account that:

1kg equals 2.205 pounds

So, we have:

Site 1:

C = 2.25 \frac {dollars} {pound}

Site 2:

5kg = 5 (2.205\ pounds) = 11.025 pounds

So, the unit cost is:

C = \frac {14} {11.025} \frac {dollars} {pound} = 1.27 \frac {dollars} {pound}

Thus, the best deal is on site 2.

ANswer:

The best deal is on site 2.

7 0
4 years ago
16x+x =12 solve justify each step with algebraic property
Karolina [17]
Here are some things you should know when solving algebraic equations.
If you add an expression to both sides of an equation, the resulting equation will have the same solution set as the original equation. In other words, they will be equivalent. This is true for all operations. As long both sides are treated the same, the equation will stay balanced.
You will also need to know how to combine like terms. But what are like terms to begin with? Like terms are defined as two terms having the same variable(s) (or lack thereof) and are raised to the same power. In mathematics, something raised to the first power stays the same. So, 5x and 10x are like terms because they both have the same variable and are raised to the first power. You don’t see the exponents because it doesn’t change the value of the terms.
To combine like terms, simplify add the coefficients and keep the common variable(s) and exponent.
The distributive property is another important rule you will need to understand. The distributive property is used mostly for simplifying parentheses in expressions/equations. 
For example, how would you get rid of the parentheses here?
6(x + 1)
If there wasn’t an unknown in between the parentheses, you could just add then multiply. That is what the distributive property solves. The distributive property states that a(b + c) = ab + ac
So, now we can simplify our expression.
6(x + 1) = 6x + 6

16x + x = 12
17x = 12 <-- Combine like terms
x = \frac{12}{17}

So, x is equal to 12/17 or approximately to 0.7.
6 0
3 years ago
Aishas diet consists of approximately 3000 calories a day.if 750 calories come from fat what percentage of total calories is tha
Natali5045456 [20]
Sorry about the lighting
Wala kasi yung ibang symbols kaya pic nalang hehe

5 0
3 years ago
The fastest train on earth is Maglev, a Japanese train which runs at a
CaHeK987 [17]

Answer:

167.2 m/sec

Step-by-step explanation:

Convert 602 km/hr to m/sec, as follows:

602 km       1000 m

------------ * ----------------- = 602,000 m/hr

    hr               1 km

Recall that 1 hr = 3600 sec.  Convert 602,000 m/hr to m/sec:

602,000 m          1 hr

------------------ * ---------------- = 167.2 m/sec

     1 hr              3600 sec

5 0
2 years ago
Guys plzz help <br> I will give points plzzz​
ludmilkaskok [199]

Answer:

Pizza

Step-by-step explanation:

It’s yummy

4 0
4 years ago
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