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sweet [91]
3 years ago
13

align="absmiddle" class="latex-formula">

Could someone please walk me through this equation?
Mathematics
1 answer:
sveta [45]3 years ago
6 0

Answer:

x = 1

Step-by-step explanation:

  • 2x^2 + 3 = 5
  • 2x^2 = 5 - 3
  • 2x^2 = 2
  • x^2 = 2/2
  • x = \| 1
  • x = 1

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(5 ×5×5)×-1= simplify
kogti [31]

Answer: -125


Step-by-step explanation:

(5*5*5)*-1

(25*5) *-1

125 * -1

-125

6 0
3 years ago
Read 2 more answers
A carnival charges $8 to enter and $3 per ride. Fill in the table of values for the total cost for a person to enter and go on 0
grigory [225]

Answer:

Look at the picture

Step-by-step explanation:

For 0 rise it would just be eight dollars

4 0
3 years ago
Can you guy's help me quick!
nadya68 [22]

Answer:

480,700 sets (first choice)

Step-by-step explanation:

If all 25 questions are different,

When order of selection counts:

P(25,7)

= 25!/(25-7)!

= 15511210043330985984000000/6402373705728000

= 2422728000

When order of selection does not count count:

C(25,7)

=25!/(7!*(25-7)!)

=15511210043330985984000000/(6402373705728000*5040)

= 480,700

Hope this helps, have a nice day.

6 0
3 years ago
A software developer wants to know how many new computer games people buy each year. Assume a previous study found the standard
Marrrta [24]

Answer:

The minimum sample size required to ensure that the estimate has an error of at most 0.14 at the 95% level of confidence is n=567.

Step-by-step explanation:

We have to calculate the minimum sample size n needed to have a margin of error below 0.14.

The critical value of z for a 95% confidence interval is z=1.96.

To do that, we use the margin of error formula in function of n:

MOE=\dfrac{z\cdot \sigma}{\sqrt{n}}\\\\\\n=\left(\dfrac{z\cdot \sigma}{MOE}\right)^2=\left(\dfrac{1.96\cdot 1.7}{0.14}\right)^2=(23.8)^2=566.42\approx 567

The minimum sample size to have this margin of error is n = 567.

3 0
3 years ago
Suppose a city with population 500,000 has been growing at a rate of ​7% per year. If this rate​ continues, find the population
krok68 [10]

Answer:

2,070,281

Step-by-step explanation:

let x = number of years

let y = population

Given:

  • initial population = 500000
  • rate of increase = 7%

y = 500000 × 1.07^x

when x = 21:

y = 500000 × 1.07^(21) = 2070281.187... = 2,070,281

5 0
2 years ago
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