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MAVERICK [17]
2 years ago
7

Use the algebra tiles to help you solve the equation 4x-12=16. What is the first step in solving the equation using algebra​ til

es? What is the solution to the​ equation?

Mathematics
1 answer:
-BARSIC- [3]2 years ago
8 0
Add 12 to 16 on the other side to make 4x = 28. Then divide 28 by 4, which equals 7. Solution is x = 7
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How do I find the variable?<br><br> N x 1/5 = 2/15<br><br> N / 1/5 = 1/3
algol [13]
First you need to get all variables on one side. You do that by multiplying the reciprocal of the fraction to everything.
N(5/1) x 1/5(5/1)=2/15(5/1)
5n=2/15 x 5/1
Then solve the multiplication problem
5n= 10/15
Then you should reduce the fraction
5n=2/3
Then divide both sides by 5
5n/5=N
2/3 divided by 5 =2/15

N=2/15




4 0
2 years ago
The operating costs for each machine for one day have an unknown distribution with mean 1610 and standard deviation 136 dollars.
BabaBlast [244]

Answer:

20.27

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, the sample means with size n of at least 30 can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

Using the Central Limit Theorem for Means, what is the standard deviation for the sample mean distribution?

This is s when \sigma = 136, n = 45. So

s = \frac{136}{\sqrt{45}} = 20.27

So the correct answer is:

20.27

3 0
2 years ago
What is 10+3c+5d-7c+d
kumpel [21]
Hey!


To simplify the equation provided we must first start off by grouping like terms.

<em>Original Equation :</em>
10 + 3c + 5d - 7c + d

<em>New Equation {Grouped Like Terms} :</em>
3c - 7c + 5d + d + 10

Now we add similar elements.

<em>Old Equation :</em>
3c - 7c + 5d + d + 10

<em>New Equation {Added Similar Elements} :</em>
-4c + 5d + d + 10

Next we add the other similtar elements.

<em>Old Equation :</em>
-4c + 5d + d + 10

<em>New Equation {Add Similar Elements} :</em>
-4c + 6d + 10

<em>So, this means that the equation 10 + 3c + 5d - 7c + d simplified is</em>  -4c + 6d + 10.

Hope this helps!


- Lindsey Frazier ♥
4 0
3 years ago
Read 2 more answers
Which values of x and y would make the following expression represent a real number? (4 + 5i)(x + yi) x = 4, y = 5 x = –4, y = 0
Svetllana [295]

Answer:It’s C

Step-by-step explanation: Edge 2020

3 0
2 years ago
Read 2 more answers
A photograph was enlarged and made into a poster using the scale factor of 2. The photograph is 5 inches by 11 inches. What is t
arsen [322]

Answer:

the area is 55

Step-by-step explanation:

5 0
3 years ago
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