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zubka84 [21]
4 years ago
10

39 - 7X = —4 ( 7X +7 ) + 4 - = minus sign — = negative sign

Mathematics
1 answer:
stepan [7]4 years ago
4 0

Answer:

x=-3

Step-by-step explanation:

39 - 7X = —4 ( 7X +7 ) + 4

Distribute

39 -7x = -28x -28 +4

Combine like terms

39 -7x =-28x -24

Add 28x to each side

39 -7x+28x =-28x+28x -24

39+21x=-24

Subtract 39 from each side

39-39+21x = -24 -39

21x = -63

Divide by 21

21x/21 = -63/21

x = -3

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Can someone help me with this plz?
sp2606 [1]

Answer:

positive exponent 0

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3 0
3 years ago
Find the distance between the lines with the given equations.<br> 3x+y = 1<br> y+6=-3x
den301095 [7]

Answer:

  • 2.21 units

--------------------------------

Given lines:

  • 3x + y = 1 and  y + 6 = - 3x

Convert both equations to slope-intercept form of y = mx + b:

  • 3x + y = 1 ⇒ y = - 3x + 1
  • y + 6 = - 3x ⇒ y = - 3x - 6

Slopes are same, so these are parallel lines, and the distance between parallel lines is:

  • d=\cfrac{|b_1-b_2|}{\sqrt{1+m^2} }, where b₁, b₂ - y-intercepts, m- slope

Substitute and calculate:

  • d=\cfrac{|1+6|}{\sqrt{1+(-3)^2} }=\cfrac{7}{\sqrt{10} } =2.21
6 0
1 year ago
What is the slope of the line that passes through the points (5, -10) and
Mariana [72]

Answer:

m(slope)=0

Step-by-step explanation:

To find slope given two points, use the formula m = y2 - y1/x2 - x1

(-10) - (-10)/(-3) - 5

0/-8

Anything being divided from 0, or divided by 0 is always 0, so the slope is 0.

Hope this helps.

7 0
3 years ago
Read 2 more answers
Find the area of equilateral triangle of side 4 cm.​
ipn [44]

Answer:6.928

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4 years ago
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Which of the following graph represents the solution set for 5x+38 ≤ 4(2-5x)
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Answer:

Option C

Step-by-step explanation:

Given inequality is,

5x + 38 ≤ 4(2 - 5x)

5x + 38 ≤ 8 - 20x [Distributive property]

5x + 20x + 38 ≤ 8 - 20x + 20x [By adding 20x on both the sides of the inequality]

25x + 38 ≤ 8

(25x + 38) - 38 ≤ 8 - 38 [By subtracting 38 on both the sides of the inequality]

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x ≤ 1.2

Therefore, Option (C) will be the correct graph.

7 0
3 years ago
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