3 years ago

Help please!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

nasty-shy [4]3 years ago

4 0

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What is the solution of the system? Use the elimination method. 2x+y=206x−5y=12 . Enter your answer in the boxes.

worty [1.4K]

2x+y=206x-5y=12
y+204x-5y=12
6y=204x=12

8 0

3 years ago

Read 2 more answers

6.8x+9.3 = -9.4+3,4(2-5x)<br> 6.8x+9.3 = -9.4+6.8 -17<br> 6.8x+9.3 = -2.6-17x

Advocard [28]

Answer:

x = -0.5

Step-by-step explanation:

From your last step:

6.8x + 9.3 = -2.6 - 17x

We have two terms with x in them on different sides of the equation, so we want to bring the 'x terms' over to the same side.

Add 17x to both sides of the equation.

6.8x + 17x + 9.3 = -2.6

Collect like terms

23.8x + 9.3 = -2.6

Subtract 9.3 from both sides

23.8x = -2.6 - 9.3

23.8x = -11.9

Divide both sides by 23.8

x = -0.5

7 0

3 years ago

13, 5, 4, 9, 7, 14, 4 The deviations are _____.

fenix001 [56]

Answer:

B."5, -3, -4, 1, -1, 6, -4"

Step-by-step explanation:

We are given that

13,5,4,9,7,14,4

We have to find the deviation.

Mean= $\frac{sum\;of\;data}{total\;number\;of\;data}$

Using the formula

$Mean,\mu=\frac{13+5+4+9+7+14+4}{7}$

$Mean,\mu=\frac{56}{7}=8$

Deviation= $x_i-\mu$

$x_i-\mu$

13 5

5 -3

4 - 4

9 1

7 -1

14 6

4 - 4

Hence, option B is correct.

7 0

2 years ago

a plumber charges $52.50 per hour plus a $75.00 service charge your father's firm hires him to fix some leaky pipes find the tot

aleksley [76]

(4.5 x 52.5) + 75 = 311.25

7 0

3 years ago

Read 2 more answers

Hey could you help me<br> Estimate<br> 754÷12

storchak [24]

Your answer is 62.8

Have a good day

3 0

2 years ago

Read 2 more answers