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ICE Princess25 [194]
3 years ago
15

Use substitution {y-4x=-7 5x+y=-6

Mathematics
2 answers:
Ainat [17]3 years ago
6 0

Answer:

First, you put the answer in slope intercept form,y=-7+4x. You substiuite which is going to be y-4x+4x=-7+4x. You simplify to y=-7+4x. You plug that into the other equation and solve. It turns out to be y= -59/9, and x=1/9. Hope this helps!

Maksim231197 [3]3 years ago
5 0

Answer:

y - 4x = -7 ...... 1

5x+y=-6 ......... 2

Make y the subject in equation 1

Thus

y = - 7 + 4x

Substitute this into Equation 2

We get

5x - 7 + 4x = - 6

9x = -6 + 7

9x = 1

x = 1/9

Substitute x = 1/9 into equation 1

y = -7 + 4x

y = - 7 + 4(1/9)

y = -7 + 4/9

y = - 59/9

x = 1/9 , y = -59/9

Hope this helps

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(07.07 lc) a cheetah runs at a speed of 49 miles for every hour. if the distance traveled, in miles, is d and time, in hours, is
alexgriva [62]

The relationship between d and t.

d = 49t

The correct equation is C.

<h3>What is Distance, speed and Time ?</h3>

How quickly something or someone is moving is determined by their speed. If you know how far an object has traveled and how long it has taken, you can calculate its average speed. Speed equals distance times time, according to the speed formula. Knowing the units for distance and time will help you determine what the units are for speed.

<h3>Given data:</h3>

speed = 49 miles/hour

Distance

Time

as we know :

Speed = Distance  /  Time .

Then:

49 = Distance/Time

Distance = 49*Time .

the relationship between d and t ( d = 49t).

To know more about Distance , speed and Time visit :

brainly.com/question/28035975

#SPJ4

I understand that the question you are looking for is :

A cheetah runs at a speed of 49 miles for every hour. If the distance traveled, in miles, is d and time, in hours, is t, which equation shows the relationship between d and t?

A. d = 49 + t

B. t = 49 + d

C. d = 49t

D. t = 49d

8 0
2 years ago
620 + 107 round estimate the sum
Westkost [7]
Okay. 

 620 would be rounded estimate to 600

& 

107 would be rounded estimate to 100 


6 0
3 years ago
Read 2 more answers
I need help with this and explain how to do it please!!<br> 6x - 4z
Troyanec [42]

Answer:

you should know you dont need help so do it by yourself. if you want the awnser you should know or you just dont pay attention in class.1234567890 is your awnser

4 0
3 years ago
Plzz help
Lina20 [59]

Answer:

$14

Step-by-step explanation:

40% of 10 is 4

4+10=14

hope this helps

5 0
2 years ago
If the sum of the interior angles of a regular polygon measures up to 1440 degrees, how many sides does the polygon have?
Nadusha1986 [10]

Answer:

Option 1) 10 sides

Step-by-step explanation:

We are given a regular polygon. The sum of interior angles measure upto 1440 degrees.

Since it is a regular polygon, it satisfies the following properties:

  • All the sides are equal.
  • All interior angle have same measure.

Let the regular polygon have n sides.

Then, the sum of interior angle is given by:

(n-2)\times 180^\circ

Putting the values, we get,

(n-2)\times 180 = 1440\\\\n-2 = \dfrac{1440}{180}\\\\n-2 = 8\\n = 8 + 2\\n =10

Thus, there are 10 sides. The regular polygon is a regular decagon.

6 0
2 years ago
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