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Rus_ich [418]
3 years ago
9

Put the steps of solving the equation in order from first to last. 2x + 1 = -1

Mathematics
1 answer:
Alborosie3 years ago
3 0

Answer:

x = 1

Step-by-step explanation:

2x + 1 = -1

2x = -1 - 1

2x = -2

x = -2 ÷ -2

x = 1

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Help please <br><br> an equation where the slope is 5 and y-intercept is 12.
Lilit [14]

Answer:  y = 5x + 12

Step-by-step explanation:

y = mx + b, where m is the slope, and b is the y- intercept, then we plug in:

y = 5x + 12

7 0
3 years ago
Find x and decide if that side (with the x) is an Altitude
irga5000 [103]

Answer:

  1. b = 15
  2. c = 51
  3. c = 100
  4. b = 25.75

Step-by-step explanation:

Using the Pythagoras theorem equation:

c^{2}=a^{2}+b^{2}

Where 'c' is the hypotenuse and 'b' and 'a' the sides of the right triangle.

1) Here c = 17, a = 8 and b = ?

Then, using the above equation we can find the side b.

17^{2}=8^{2}+b^{2}

b=\sqrt{225}

b=15

2) Here a = 24, b = 45 and c = ?  

c=\sqrt{24^{2}+45^{2}}

c=51

3)  Here a = 28, b = 96 and c = ?

c=\sqrt{28^{2}+96^{2}}    

c=100

4)  Here a = 17, b = ? and c = 28

b=\sqrt{28^{2}-11^{2}}  

b=25.75

Just in the 4 case x is an altitude.

I hope it helps you!

         

3 0
3 years ago
Please help as soon as possible ​
Inessa [10]

Answer:

75%

Step-by-step explanation:

7 0
3 years ago
The point (3,-7) lies on a circle and the center of the circle is at (-2,-7). What is the equation of this circle
melomori [17]

Step-by-step explanation:

the answer is in the above image

4 0
3 years ago
Two train leave stations 210 miles apart at the same time and travel toward each other. One train travels at 80 miles per hour w
Brrunno [24]

SOLUTION

At the same time t,

Train 1 would have covered a distance of 80t, since distance = average speed x time.

Train 2 would have covered a distance of 70t.

Now both added should give 210 miles

That is 80t + 70t = 210

150t = 210

t = 210/150

t = 1.4 hours

3 0
1 year ago
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