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3 years ago

What’s the answer A. 2 B.4 C.6 D. 12

Mathematics

2 answers:

dem82 [27]3 years ago

4 0

Answer:

C.6

Step-by-step explanation:

x - y = 4

x + y = 8

----------------------Add

2x = 12

x = 6

x coordinate of the solution to the system is 6

Answer

C.6

Firdavs [7]3 years ago

3 0

The Answer is C) 6 I believe

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Find the standard deviation of the data, 12, 19, 9.

jek_recluse [69]

Answer:

4.19

Step-by-step explanation:

Find the mean:

$\text{Mean}=\frac{12+19+9}{3}=\frac{40}{3}$

Find the standard deviation:

$\text{Standard Deviation}=\sqrt{\frac{(12-\frac{40}{3})^2+(19-\frac{40}{3})^2+(9-\frac{40}{3})^2}{3}}=\sqrt{\frac{158}{9}}\approx4.19$

4 0

3 years ago

Which is greater 0.345 or 0.333

Setler79 [48]

Answer:

0.345 is greater than 0.333

Step-by-step explanation:

If you go down the line of numbers the first two numbers match but then you get a 4 and 3. 4 is greater then 3 so 0.345 is greater than 0.333

8 0

3 years ago

Two data sets have the same mean,

nirvana33 [79]

For Data Set B, we see that the data is more varied. The absolute deviations are 4, 3, 2, 5. The average of these absolute deviations is 3.5. MAD_B = (4+3+2+5)/4 =3.5 M ADB

Hence, The average of these absolute deviations is 3.5.

5 0

2 years ago

Please help!!!!!!1 <br><br> 5x+y=23

d1i1m1o1n [39]

Answer:

x=4 y=3

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

-7x - 12 = - 7х + 3(-4 - x)

dsp73

Answer:

$x=0$

Step-by-step explanation:

$-7x - 12 = - 7x + 3(-4 - x)$

Open up the parentheses

$-7x - 12 = - 7x -12-3x$

-7x cancels out on both sides

$-12 =-12-3x$

-12 cancels out on both sides

$0=-3x\\x=0$

I hope this helps!

4 0

3 years ago