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ivolga24 [154]
3 years ago
6

Guess who’s back! I need help with this! This is my last question I don’t want to get it wrong. Also, can you explain to me what

it means :/

Mathematics
1 answer:
KengaRu [80]3 years ago
5 0

Hello!

To solve this equation let's replace the > sign for now and make the operation sign = so we can solve for it.

First, we will subtract 8 from both sides. Making it -x=6-8

We will then solve for the right side, giving us -x=-2

To solve for x, we need to divide each side by -1.

When we are doing this, we get the result of x=2.

When we go to rewrite this equation as an inequality, the operation sign will be the opposite of what it originally was


Giving us the answer of x < 2 !

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What is the positive solution to the equation 0 = –x2 + 2x + 1? Quadratic formula: x = StartFraction negative b plus or minus St
Vladimir [108]

Answer:

See attached for a "Neat" quadratic formula.

a = -1

b = 2

c = 1

x = [-2 +- sqr root( 4 -4*-1*1)] / -2

x = [-2 +- sqr root( 4 -4*-1*1)] / -2

x = [-2 +- sqr root(8)] / -2

x1 = (-2 +2.8284271247)  / -2

x1 = .8284271247 / -2

x1 = -0.41421

x2 = (-2 -2.8284271247)  / -2

x2 = ( -4.8284271247)  / -2

x2 = 2.4142135624

So the equation has the positive solution of

2.4142135624

Step-by-step explanation:

3 0
3 years ago
In 11 years, John's age will be 5 less than 5 times his current age. How old is he? If x represents John's current age, which of
seropon [69]

Answer:

Step-by-step explanation:

Let John's age be x. This gives us that in 11 years, john's age will be 5 less than 5 times his current age. Therefore, we could get: x+11=5x-5. This is your second equation. Solving for x, we get 4x=16 so x=4.

5 0
3 years ago
Read 2 more answers
Yasmine is serving ice cream with the birthday cake at her party she has purchased 7 1/2 pints of ice cream she will serve 3/4 o
vlada-n [284]
7 1/2 is 7.5 and 3/4 is .75, so 7.5 divided by .75 is 10. 
8 0
4 years ago
I need Help with this TRIG question
strojnjashka [21]
                                x 
  (15) sin 30.5   = ------  (15)
                               15

(15) sin 30.5 = x 
Plug this part into a calculator.

7.61 = x 


Area of a triangle: 1/2bh 

1/2 (7.61)(13)
3.805(13)
49.469

49.47 un² is your final answer since you are supposed to round to the tenths place. I hope this helps.






                       

3 0
3 years ago
Calculate the mean, median, mode, variance and standard deviation for the following set of data. Show all calculations.
Evgen [1.6K]

Answer:

Mean (Average) 16.4125

Median 18.3  

Mode 10.1, appeared 2 times

Step-by-step explanation:

Mean:10.1, 20.2, 16.7, 9.9, 10.1, 24.4, 19.9, 20.0 / 8 = 16.4125

Median: This is the number in the middle. So if we where to put all of the numbers in number order from least to greatest, 18.3 would be in the middle.

Here are the numbers in number order,

9.9, 10.1, 10.1, 16.7, 19.9, 20.0, 20.2, 24.4

now we would just find the difference between 16.7 and 19.9 and that gets us 18.3.

Mode: the mode is the value in a data set that has the highest number of recurrences. Because 10.1 appeared twice, that's why its the mode.  

3 0
3 years ago
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