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allsm [11]
3 years ago
10

Simplify the complex fraction 7/10÷-2/5

Mathematics
1 answer:
enyata [817]3 years ago
8 0

\bf \cfrac{7}{10}\div \cfrac{-2}{5}\implies \cfrac{7}{\underset{2}{~~\begin{matrix} 10 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}}\cdot \cfrac{~~\begin{matrix} 5 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}{-2}\implies -\cfrac{7}{4}

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Use this idea to find the value of x in the diagram at<br> right. Be sure to show all work.<br> 71°
EleoNora [17]

We have that  the value of x in the diagram at the right is

x=109

From the question we are told

Use this idea to find the value of x in the diagram at  right.

From The diagram  we have a Triangle with its base angles equal

Generally the equation for the Triangle   is mathematically given as

180=2b+y

Where

b=Base angles

Since Angle on a straight line is 90

Therefore

180=71+x

x=109

In conclusion

The value of x in the diagram at the right is

x=109

For more information on this visit

brainly.com/question/14209188?referrer=searchResults

3 0
2 years ago
The distance between two cities is 180km. The distance was covered by a car at the rate of 50km/h, by a bus 45km/h, by a truck a
Gennadij [26K]

Answer:

The speed and time are directly proportional in that the higher the speed the lesser the time and vice versa.

The constant is the total distance which is 180 km

Step-by-step explanation:

Step one:

given data

The distance between the  two cities is 180km

1.The distance was covered by a car at the rate of 50km/h

The time taken will be

velocity= distance/time

time= distance/velocity

time= 180/50

time= 3.6 hours

2.The distance was covered by a bus 45km/h

The time taken will be

velocity= distance/time

time= distance/velocity

time= 180/45

time= 4 hours

3.The distance was covered by a bicycle at 25km/h

The time taken will be

velocity= distance/time

time= distance/velocity

time= 180/25

time= 7.2 hours

7 0
3 years ago
Is y=3x+4 parallel or perpendicular
Sauron [17]

Answer: y=3x+4 is parallel to y=3x+7

Step-by-step explanation:

<h3> The complete exercise is: "Is y=3x+4 parallel, perpendicular or neither to y=3x+7?"</h3><h3 />

The equation of the line in Slope-Intercept form is:

y=mx+b

Where "m" is the slope of the line and "b" is the y-intercept.

First, in order to solve this exercise it is important to remember that, by definition:

1. The slopes of parallel lines are equal.

2. The slopes of perpendicular lines are negative reciprocal.

In this case, you have the following line given in the exercise:

 y=3x+4

You can identify that "m" and "b" are:

m=3\\b=4

And the other line provided in the exercise is this one:

y=3x+7

So, you can identify that:

m=3\\b=7

As you can notice, the slopes of both lines are equal; therefore, you can conclude that those lines are parallel.

6 0
3 years ago
A truck can be rented from Company A for ​$90 a day plus ​$0.30 per mile. Company B charges ​$70 a day plus ​$0.40 per mile to r
sergiy2304 [10]

90+0.30m = 70 +0.40m

90-.10m= 70

-0.10m=-20

m=200

more than 200 miles


8 0
3 years ago
I can't seem to figure it out lol.​
fomenos

4y+2x+y+79-x=180°

5y+x=101

X=101 -5y

-------

3 0
2 years ago
Read 2 more answers
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