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olasank [31]
3 years ago
7

WILL MARK BRAINLIEST FOR CORRECT ANSWER.

Mathematics
2 answers:
kiruha [24]3 years ago
7 0

Short Answer

It's A

Solution

A

2/3 x - 2 = 1/3 x                             Subtract 2/3x from both sides

2/3x - 2/3x - 2 = 1/3x - 2/3 x        Combine like terms

- 2 = - 1/3 x                                    Multiply both sides by - 3

- 2  * - 3 = 3 * - 1/3 x

- 6 = - x                                          Multiply by -1

x = 6

B

B looks like the same thing, but the 2 is a plus 2. When you solve for x you go through exactly the same steps. Your answer becomes - 6

C

C adds 2/3 x to both sides. The result is x = - 2

D same as C only x = 2

Phoenix [80]3 years ago
3 0

I would simplify each equation and then plug in 6 for x.

A.) \frac{2}{3}x-2= \frac{1}{3} x  Subtract 2/3x on both sides

\frac{2}{3}x-2- \frac{2}{3}x= \frac{1}{3}x-\frac{2}{3}x

-2=-\frac{1}{3}x  Now you plug in 6

-2=-\frac{1}{3} (6)

-2 = -\frac{6}{3}

-2 = -2


x = 6 is the solution for choice A

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What is the value of the expression (3/7)(-2/5 •9/11)
Alex787 [66]

The answer is 54/385, or 0.14025974025974.

Hope this helps!

7 0
3 years ago
A tree is broken at a height of 5 m from the ground and its top touches the ground at a distance of 12 m from the base of the tr
frozen [14]

Answer:

The original height of the tree is 18 m.

Step-by-step explanation:

Please see attached photo for explanation.

From the diagram, we shall determine the value of 'x'. This can be obtained by using the pythagoras theory as follow:

x² = 5² + 12²

x² = 25 + 144

x² = 169

Take the square root of both side

x = √169

x = 13 m

Finally, we shall determine the original height of the tree. This can be obtained as follow.

From the question given above, the tree was broken from a height of 5 m from the ground which form a right angle triangle with x being the Hypothenus as illustrated in the diagram.

Thus, the original height of the will be the sum of 5 and x i.e

Height = 5 + x

x = 13 m

Height = 5 + 13

Height = 18 m

Therefore, the original height of the tree is 18 m.

3 0
3 years ago
WILL GIVE BRAINLIEST!! A ramp is 12 inches high and rises with a 17° angle. How long is the base?
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6 0
3 years ago
15x^2 + 41x + 28 <br><br>STEP BY STEP ANSWER PLSSS​
maria [59]

Answer:

(3x+4)(5x+7)

Step-by-step explanation:

15x^2 +41x+28

Factor the expression by grouping. First, the expression needs to be rewritten as 15x^2 +ax+bx+28. To find a and b, set up a system to be solved.

a+b=41

ab=15×28=420

Since ab is positive, a and b have the same sign. Since a+b is positive, a and b are both positive. List all such integer pairs that give product 420.

1,420

2,210

3,140

4,105

5,84

6,70

7,60

10,42

12,35

14,30

15,28

20,21

Calculate the sum for each pair.

1+420=421

2+210=212

3+140=143

4+105=109

5+84=89

6+70=76

7+60=67

10+42=52

12+35=47

14+30=44

15+28=43

20+21=41

The solution is the pair that gives sum 41.

a=20

b=21

Rewrite 15x^2 +41x+28 as (15x^2 +20x)+(21x+28).

(15x^2 +20x)+(21x+28)

Factor out 5x in the first and 7 in the second group.

5x(3x+4)+7(3x+4)

Factor out common term 3x+4 by using distributive property.

(3x+4)(5x+7)

7 0
3 years ago
Read 2 more answers
Do 2 and 3, please. show all your work
nignag [31]
The answer would be b and c
3 0
3 years ago
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