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vlada-n [284]
2 years ago
15

Plz help question 1 or 2

Mathematics
1 answer:
s344n2d4d5 [400]2 years ago
7 0

Answer:

sorry dont know

Step-by-step explanation:

30 oite 904-=

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What two numbers' sum=-4 and product=-2
n200080 [17]

Let <em>a</em> and <em>b</em> be the two numbers. Then

<em>a</em> + <em>b</em> = -4

<em>a b</em> = -2

Solve the second equation for <em>b</em> :

<em>b</em> = -2/<em>a</em>

Substitute this into the first equation:

<em>a</em> - 2/<em>a</em> = -4

Multiply both sides by <em>a</em> :

<em>a</em>² - 2 = -4<em>a</em>

Move 4<em>a</em> to the left side:

<em>a</em>² + 4<em>a</em> - 2 = 0

Use the quadratic formula to solve for <em>a</em> :

<em>a</em> = (-4 ± √(4² - 4(-2))) / 2

<em>a</em> = -2 ± √6

If <em>a</em> = -2 + √6, then

-2 + √6 + <em>b</em> = -4

<em>b</em> = -2 - √6

In the other case, we end up with the same numbers, but <em>a</em> and <em>b</em> are swapped.

7 0
2 years ago
Isaac is planting flowers for mother.He needs 2/3 of a cup of soil to go in each of the 8 pots that he has. How many cups of soi
levacccp [35]
He will need 16/3 cups of soil. Simplified that’s 5 and 1/3 cups of soil. I’m not sure if my answers right but yeah lol.
3 0
3 years ago
What whole number is equivalent to 16/1 ?
KiRa [710]
I think it is equivalent to 16
hope that helps! :)

7 0
2 years ago
Read 2 more answers
Can somebody please help me with this?
ser-zykov [4K]

Answer:

d fasho

Step-by-step explanation:

8 0
2 years ago
1.A study was created to test the effects of jazz on people's sleep patterns. The hypothesis of the experiment was
ycow [4]

Answer:

Independent Variable:  Jazz music

Dependent Variable: Sleeping Time

Experimental Group: people sleeping with jazz music

Control Group: people sleeping without jazz music

3 constants:

No of people in group

Jazz music

Sleep

Step-by-step explanation:

The independent variable is the one which is not altered by any outer influence. For example the jazz music will not be interrupted by the sleeping habits of people.

The dependent variable is the one which is affected by external changes such as sleeping time is afffected by external music or noises.

Experimental group on which experiment is being carried out.

Control group is which determines the changes in experimental group.

Constants which do not change for the number of experiment, could be number of people, type of jazz music, volume of jazz music also sleep is a constant .

7 0
3 years ago
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