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Nana76 [90]
2 years ago
14

Point A (-2-10) is reflected over the x axis write the coordinates of A

Mathematics
1 answer:
Arada [10]2 years ago
7 0
The answer is (-2, 10) because when reflecting over the x, change the sign of y. When reflecting over the y, change the sign of x.
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Find the population variance and standard deviation. 8​, 17​, 29​, 35​, 41 Choose the correct answer below. Fill in the
Nuetrik [128]

Answer:

(a) σ²  = 144

(b) s² = 12

Step-by-step explanation:

(a) Population variance σ² = ∑(X - \overline{X})² / N

The arithmetic mean \overline{X} = \frac{8 + 17 + 29 + 35 + 41}{5}

                                   \overline{X} = \frac{130}{5}

                                   \overline{X} = 26

σ²  =  \frac{(8 - 26)^{2} + (17 - 26)^{2} + (29 - 26)^{2} + (35 - 26)^{2} + (41 - 26)^{2}}{5}

     =  \frac{(- 18)^{2} + (- 9)^{2} + (3)^{2} + (9)^{2} + (15)^{2}}{5}

     =  \frac{324\ +\ 81\ +\ 9\ +\ 81\ +\ 225}{5}

     = \frac{720}{4}

σ²  = 144

(b) Standard\ deviation = \sqrt{Variance}

                                   = \sqrt{144}

                                   = 12

 

7 0
3 years ago
Samuel has $2,000 in the bank and owns a car worth $9,000. He also has $10,000 worth of student loans and a $500 credit card bil
guapka [62]
<span>The answer is 500 Because if you $2,000 +$9,000 = 11,000 11,000 - 10,000 - 500 = 500 Do you understand? hope this helped :)</span>
7 0
2 years ago
Read 2 more answers
Can someone pls help i will give you brainlist pls help me out. Find x. Round your answer to the nearest tenth
stich3 [128]

Answer:

x=11.5 i think

Step-by-step explanation:

3 0
3 years ago
how much of brand A fruit punch (20% fruit juice) must be mixed with 9 L of brand b fruit punch (40% fruit juice) to create a m
leonid [27]

6 liters of brand A fruit punch must be mixed with 9 L of brand b fruit punch.

Let x=liters of Brand A fruit punch to be mixed with 9 liters of Brand B fruit punch.

x + 9 = liters of mixture.

20%(x) + 9*40% = 32%(x+9)

20/100 x + 9*40/100 = 32/100 (x+9)

0.2x + 360/100 = 0.32x + 9*0.32

0.2x + 3.6 = 0.32x + 2.88

0.12x = 3.6 - 2.88

0.12x = 0.72

divide by 0.12 on both sides

x = 0.72/0.12

= 72/100/12/100

= 72/12

= 6 liters.

Therefore 6 liters of brand A fruit punch must be mixed with 9 L of brand b fruit punch.

Learn more about the fruit punch here:

brainly.com/question/28658426

#SPJ1

6 0
8 months ago
Determine the slope of the line represented by the equation 9x + 4y = 8 . Represent the slope in decimal form.
qaws [65]
The slope in fraction form is -9/4 so converted to a decimal is -2.25
5 0
3 years ago
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