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Murrr4er [49]
4 years ago
3

Solve the following 4x-1 divided by 2 =x+7 mathswatch

Mathematics
1 answer:
Pani-rosa [81]4 years ago
7 0

Answer:

x = 15/2

Step-by-step explanation:

Rewriting this problem symbolically, we get:

 4x - 1

----------- = x + 7

     2

Eliminate the fraction by multiplying all three terms by 2:

4x - 1 = 2x + 14

Combining like terms, we get:

2x = 15

Then x = 15/2

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A car moving east at 45km/hr turns and travels west at 30km/hr. What is the magnitude and direction of the change in velocity?
madam [21]
(-30 km/h) -(45 km/h) = -75 km/h . . . . . east is positive here

The velocity changed 75 km/h to the west.
3 0
3 years ago
S KM ∥ JN? Why or why not?
bixtya [17]

Given: We have the given figure through which we can see

LK=16,

KJ=10,

LM=24,

MN=15

To Find: Whether KM || JN and the reasoning behind it.

Solution: Yes, KM || JN because \frac{16}{10}= \frac{24}{15}

Explanation:

For this solution, we use the concept of Similar Triangles.

Now, KM || JN if ΔLKM ~ ΔLJN (i.e., if ΔLKM is similar to ΔLJN).

Now, ∠MLK=∠NLJ

To prove similarity of the two triangles, we have to show that the sides are proportional. In other words, LK:KJ = LM:LN

LK:KJ=LM:LN\\\\ \frac{LK}{KJ} =\frac{LM}{LN}\\\\\frac{16}{26}= \frac{24}{39}\\\\

which is true as both sides simplify to \frac{8}{13}

Thus, we see that ΔLKM ~ ΔLJN (i.e., if ΔLKM is similar to ΔLJN).

Therefore, KM || JN.

To come to the reasoning, notice that

\frac{LK}{LJ} =\frac{LM}{LN}\\\\\frac{LK}{LK+KJ} =\frac{LM}{LM+MN}\\\\\frac{LK+KJ}{LK} =\frac{LM+MN}{LM}\\\\1+\frac{KJ}{LK}=1+ \frac{MN}{LM}\\\\\frac{LK}{KJ} =\frac{LM}{MN}

In other words, \frac{16}{10}= \frac{24}{15}


4 0
4 years ago
Read 2 more answers
Can someone tell me how to answer this?​
padilas [110]
I can help your trying to solve the inside variable to equal the inside one Z=6
5 0
3 years ago
I need help !!! Pls help me
IrinaVladis [17]
It is answer #1.
m + g must be less than or = 40 hours
12m + 14g must be greater than or = $250
6 0
3 years ago
Please asnerw this pic attached below
mamaluj [8]

Answer:

x = 30

Step-by-step explanation:

Look at triangle LMN.

m<NLM + m<M + m<MNL = 180

90 + m<M + 45 = 180

m<M = 45

Theorem: The measure of an exterior angle of a triangle is equal to the sum of the measures of the remote interior angles.

<ONM is an exterior angle of triangle KMN.

The remote interior angles are <K and <M.

m<K + m<M = m<ONM

2x + 45 = 105

2x = 60

x = 30

Answer: x = 30

8 0
3 years ago
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