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Kaylis [27]
3 years ago
7

A student solved 6x+4=2(x−8) in four steps as shown:

Mathematics
1 answer:
mr_godi [17]3 years ago
7 0
The first thing you should do is solve the equation yourself.

1) Distribute the 2.  
6x + 4 = 2x – 16

2) Next, you'll want to get the x's on one side. So add -2x to both sides.
6x + 4 + -2x = 2x + -2x - 16
4x + 4 = -16

3) Now subtract 4 from both sides
4x + 4 – 4 = -16 – 4
4x = -12

4) Finally, divide both sides by 4
4x/4 = -12/4
x = –3

To solve this problem all you need to do is look back out you work, and figure out the correct solution. The answer the question is The student made an error in Step 1.

You might be interested in
If both pairs of opposite angles of a quadrilateral are __________, then the quadrilateral is a parallelogram.
lara [203]

Answer:

Obtuse

Step-by-step explanation:

Angles of a parallelogram are supplementary to it's adjacent angles . One pair of opposite angles of a parallelogram is obtuse & other pair is acute . Here in the figure , ∠DAB & ∠BCD are obtuse angles and also opposite to each other whereas ∠ADC & ∠ABC are acute angles and are opposite to each other.

5 0
3 years ago
Solve for t.<br><br> −3t≥39<br> Enter your answer as an inequality in the box.
Flauer [41]

Answer:

\[t\leq -13\]

Step-by-step explanation:

Given inequality is \[−3t\geq39\]

Simplifying:

\[-t\geq \frac{39}{3}\]

\[=>-t\geq13\]

Sign of the inequality changes  of making both sides negative.

\[=>t\leq -13\]

Hence the solution for the given inequality is represented by \[t\leq -13\]

This means that the original inequality will be true only for those values of t which are less than or equal to -13.

6 0
3 years ago
Read 2 more answers
Please help i would greatly appreciate it :D
kumpel [21]
8.
40+105+x=180\\&#10;x=35

9.
The sum of two sides must be greater than the third side.
It can't be 5 because 5+5=10\not>12.
It can't be 7 because 5+7=12\not>12.
It can't be 17 because 5+12=17\not>17.
So it's 12.

10.
a. Turk, McAllister
b. Market, Mission, Howard
c. not sure about this one

8 0
3 years ago
Julie travels 3 times as fast as Bill. Traveling in opposite directions, they are 190 miles apart after 2.5 hours. Find their ra
Mkey [24]

Answer:

Step-by-step explanation:

Let b

Bill's rate of travel = x

Let Julie's rate of travel = 3x

The time each travels is 2.5 hours

Together they travel a distance of 190 miles

d = r*t

Bill's distance covered is r * t = 2.5x

Julie's distance travel is 2.5 * 3x = 7.5x

The total distance = Bill + Julie

2.5x + 7.5x = 190

10x = 190

x = 190/10

x = 19

Bill's distance = 2.5 * 19 = 47.5

Julie's distance = 19 * 7.5 = 142.5

Rate = distance / time

Bill's rate = 47.5 / 2.5 = 19 miles per hour.

Julie's rate = 142.5/2.5 = 57 miles per hour

Is there an easier way?

You should notice that Bill's rate is just x which is 19 miles / hour

You can also notice that Julie is going 3 times as fast or 19*3 = 57

6 0
3 years ago
Its -20 but how? pls helppp. ill give brainliest
MissTica

w-10=2(w+5)

w-10=2w+10

w-2w=10+10

-w=20

w=-20

4 0
2 years ago
Read 2 more answers
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