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ollegr [7]
3 years ago
8

Pls help me solve:-4(x-1)+6x=34

Mathematics
1 answer:
Rufina [12.5K]3 years ago
6 0

Answer:

x = 15

Step-by-step explanation:

-4(x-1) + 6x = 34   --- distribute the -4 by multiplying

-4x + 4 + 6x = 34

-4x + 6x + 4 = 34 --- rewrite/group like terms and combine

2x + 4 = 34 --- now you need to isolate the variable x

2x - 4 = 34 - 4  --- subtract 4 from each side

2x = 30 --- divide each side by 2 (inverse operation of multiplication)

x = 15

Then to check, plug in 15 for x:

-4(15-1) + 6x = 34

-60 + 4 + 6x = 34

-56 + 6x = 34

-56 + 56 + 6x = 34 + 56

6x = 90 ---divide each side by 6 (inverse op of multiplication)

x = 15

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cho tứ giác ABCD. Gọi M,N,P,Q là trung điểm của các cạnh AB, CD, AD, BC. Chứng minh rằng vecto MP = vecto QN, vecto MQ = vecto P
Dmitriy789 [7]

Answer:

Step-by-step explanation:

Xét tam giác DAB có: P là trung điểm AD, M là trung điểm AB

=> MP là đường trung bình của tam giác DAB => MP//BD và MP=\frac{1}{2}BD  (1)

Xét tam giác DBC có: N là trung điểm DC, Q là trung điểm BC

=> QN là đường trung bình của tam giác DBC => QN//BD và QN=\frac{1}{2}BD  (2)

Từ (1) và (2) => vecto MP song song cùng chiều với vecto QN

và độ dài MP = độ dài QN = \frac{1}{2}BD

=> vecto MP = vecto QN

Tương tự xét các tam giác DAC và tam giác ABC => vecto MQ = vecto PN

4 0
3 years ago
Describe, in words, the solution set for the following equation.<br><br> 3x+3=3+3x
juin [17]

Answer:

Infinite Answers

Step-by-step explanation:

You subtract 3x from both side which leaves you with 3=3, which leaves you to conclude there are infinite answers to this equation.

5 0
3 years ago
Please help me on this!
Likurg_2 [28]

Step-by-step explanation:

no I won't thanks though

6 0
3 years ago
Can someone answer this!?
Karolina [17]

Answer:

x = 58

Step-by-step explanation:

Hope this helps

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4 0
3 years ago
Read 2 more answers
Radio signals travel at a rate of 3 × 108 meters per second. How many seconds will it take for a radio signal to travel from a s
blondinia [14]
The time taken for radio signal to the earth's surface we shall proceed as follows;
time=(distance)/(speed)
Distance=7.5×10^6 meters
speed=3×10^8 meters/second
therefore:
Time=(7.5×10^6)/(3×10^8)=0.025 seconds
We conclude that it will take the signal 0.025 seconds to reach the surface of the earth.
3 0
3 years ago
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