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alexgriva [62]
3 years ago
7

8x-3x=5x^2 show work

Mathematics
2 answers:
kolezko [41]3 years ago
8 0

Simplify 8x - 3x to 5x

5x = 5x^2

Cancel 5 on both sides

x = x^2

Move all terms to one side

x - x^2 = 0

Factor out the common term x

x(1 - x) = 0

Solve for x;

<u>x = 0, 1</u>

eimsori [14]3 years ago
6 0

8x-3x=5x^2\\5x=5x^2\\x=x^2\\x=1

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Various studies indicate that approximately 11% of the world's population is left handed. You think this number is actually high
Irina-Kira [14]

Answer:

a. H0 : p ≤ 0.11 Ha : p >0.11 ( one tailed test )

d. z= 1.3322

Step-by-step explanation:

We formulate our hypothesis as

a. H0 : p ≤ 0.11 Ha : p >0.11 ( one tailed test )

According to the given conditions

p`= 31/225= 0.1378

np`= 225 > 5

n q` = n (1-p`) = 225 ( 1- 31/225)= 193.995> 5

p = 0.4 x= 31 and n 225

c. Using the test statistic

z=  p`- p / √pq/n

d. Putting the values

z= 0.1378- 0.11/ √0.11*0.89/225

z= 0.1378- 0.11/ √0.0979/225

z= 0.1378- 0.11/ 0.02085

z= 1.3322

at 5% significance level the z- value is ± 1.645 for one tailed test

The calculated value falls in the critical region so we reject our null hypothesis H0 : p ≤ 0.11 and accept  Ha : p >0.11 and  conclude that the data indicates that the 11% of the world's population is left-handed.

The rejection region is attached.

The P- value is calculated by finding the corresponding value of the probability of z from the z - table and subtracting it from 1.

which appears to be 0.95 and subtracting from 1 gives 0.04998

8 0
3 years ago
What is 25% out of 28
fgiga [73]
Since 25% is 1/4 divide 28 by 4 to get your answer of 9.5
8 0
3 years ago
Read 2 more answers
A high-interest savings account pays 5.5% interest compounded annually. If $300 is deposited initially and again at the first of
inessss [21]
That is an annuity and use the attached formula.

Total = 300 * [(1.055)^11 -1] / .055 -300
Total = 300 * <span> <span> <span> 1.8020924036  </span> </span> </span> -1 /.055 -300
Total = 300 * <span>.8020924036 / .055 - 300
</span>Total = 300 * <span> <span> <span> 14.5834982473 </span> </span> </span> -300
Total = <span> <span> <span> 4375.0494741818 </span> </span> </span> -300
Total = <span>4075.05


</span>

4 0
3 years ago
Please help me i don’t know if I’m right
Scilla [17]

Answer:

   your choice is correct

Step-by-step explanation:

The magnitude of the difference between the target amount and the actual amount will be no greater than the allowed error.

  |x -34| ≤ 0.25

5 0
2 years ago
Simplify the following polynomial expression​
Juli2301 [7.4K]

Distribute the negative sign

7x^2-3x-6

Combine like terms

-9x^2 + 7x^2 = -2x^2

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13 - 6 = 7

-2x^2 +6x + 7

<u>Answer</u>

-2x^2 +6x + 7

3 0
3 years ago
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