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2 years ago

What is the simplified expression for -3(2x-y)+2y + 2(x+y)?

Mathematics

2 answers:

slamgirl [31]2 years ago

6 0

Answer:

$- 3(2x - y) + 2y + 2(x + y) \\ - 6x + 3y + 2y + 2x + 2y \\ = - 4x + 7y$

I hope I helped you^_^

irakobra [83]2 years ago

5 0

Answer:Check the options well. My answer isn't in the options

Step-by-step explanation:

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Find the regression line associated with the set of points. (Round all coefficients to four decimal places.) HINT (See Example 2

horrorfan [7]

The equation of the regression line is : Ŷ = 0.8571+0.8878X

Given the set of points :

(1, 2), (4,4), (9,9)

X axis : ___ Y axis

1 ___________2

1 ___________2 4 __________ 4

1 ___________2 4 __________ 4 9 __________ 9

The regression line associated could be obtained using technology such as excel, linear regression solvers or a graphing calculator.

Using technology :

Input the values of X and Y into their appropriate column and plot :

The regression equation obtained is :

Ŷ = 0.8571 + 0.8878X

Where :

Ŷ = predicted value of Y(dependent variable)

X = Independent variable

Slope = 0.8878

Intercept = 0.8571

The regression plot is attached below

Learn more : brainly.com/question/18405415?referrer=searchResults

7 0

2 years ago

Can you solve the equation 2/3(4x - 5)= 8 by using the division property of equality? explain.

bija089 [108]

$\dfrac{2}{3}(4x-5)=8\qquad|\text{use the division property of equality}\\\\\dfrac{2}{3}(4x-5):\dfrac{2}{3}=8:\dfrac{2}{3}\\\\\dfrac{2}{3}(4x-5)\cdot\dfrac{3}{2}=8\cdot\dfrac{3}{2}\\\\4x-5=4\cdot3\\\\4x-5=12\qquad|\text{use addition property of equality}\\\\4x-5+5=12+5\\\\4x=17\qquad|\text{use the division property of equality}\\\\4x : 4=17:4\\\\x=\dfrac{17}{4}$

8 0

3 years ago

an airplane flies 105 miles and 1/2 hour how far can you fly on a 1/4 hours at the same rate of speed

nexus9112 [7]

1/2 hour = 105 miles

Divide by 1/2 on both sides :
1/4 hour = 52.5 miles

4 0

3 years ago

The first three terms of an arithmetic sequence are as follows.

Anna007 [38]

Answer:

The next two terms are 14 and 20.

Step-by-step explanation:

This is because the pattern is add 6, so you add 6 to 8 which equals 14, then 14 plus 6 equals 20.

5 0

3 years ago

‼️‼️solve by substitution {-r+T=5 , -2r+T=4. all these problems w work shown (along w the other problems i posted) r due in the

Luden [163]

Answer:

#4: (r,t) = (1,6) #5: (x, y) = (- $\frac{1}{2}$ ,4) #6: (x, y) = (3, 5) #7: (p, r) = (10, $\frac{14}{3}$ )

Step-by-step explanation:

#4:

Solve for t.

t = 5 + r

Substitute the given value of t into equation

-2r + 5 + r = 4

Solve for r

r = 1

substitute the given value of r into equation

t = 5 + 1

solve for t

t = 6

solution is ordered pair (r, t) = (1,6)

#5:

Solve for y.

y = 2 - 4x

Substitute the given value of y into equation

2x - (2- 4x) = -5

Solve for x

x = - $\frac{1}{2}$

substitute the given value of x into equation

y = 2 - 4x (- $\frac{1}{2}$ )

solve for y

y = 4

solution is ordered pair (x, y) = (- $\frac{1}{2}$ ,4)

#6:

Solve for x

x = -12 + 3y

Substitute the given value of x into equation

2 (-12 + 3y) + y = 11

Solve for y

y = 5

substitute the given value of y into equation

x = -12 + 3 x 5

solve for x

x = 3

solution is ordered pair (x, y) = (3, 5)

Solve for r

r = $\frac{14}{3}$

Substitute the given value of into equation

-2p + 3x $\frac{14}{3}$ = -6

Solve for p

p = 10

solution is ordered pair (p, r) = (10, $\frac{14}{3}$ )

5 0

3 years ago