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Zinaida [17]
3 years ago
8

what is the first step used in solving this equation 2x+9y=28 and 3x-3y=14. Identify the variable that will be solved for when y

ou add these equations
Mathematics
1 answer:
umka2103 [35]3 years ago
7 0

Answer:

Multiply the second equation's terms by 3. Solve for x.

Step-by-step explanation:

You will get:

2x+9y=28

9x-9y=42

Add them to get:

11x=70.

You can solve from there.

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Sliva [168]

Answer:

I think the answer is 664....but I'm nt sure. Plz don't blame me if I'm wrong lol

Step-by-step explanation:

12x8x7= 672

672- 8= 664

3 0
3 years ago
In a right triangle one acute angle measures 48 more than 2 times the other. If the sum of the measure of the two acute angles m
Ainat [17]

A given angle measures 90°.. Then, note that the total measurement of the triangle is 180°... Subtract 180° by 90°, and the other angles must add up to 90°!  

Good luck!


3 0
3 years ago
PLZ PLZ I NEED THIS TODAY!!
Burka [1]

Answer:

A

Step-by-step explanation:

y=x+1

=> put y=5

5=x+1

x=5-1

x= 4

(4,5)

same put y=9

so, x= 8

(8,9)

5 0
3 years ago
A cheetah runs at a rate of 75 miles per hour about how many leaders can it run in 5 seconds​
umka21 [38]

Answer:

Distance in meters D = 167.75 meters

Step-by-step explanation:

Distance covered in 5 seconds is given by:

Distance, D = Speed (S) X Time (T)

Where,

Distance = ?

Speed = 75mph

Time = 5s

Since we are calculating distance in meters, we have to convert 75miles per hour to meters per second

75mph = 75miles/1hr X 1km/0.621miles X 1000m/1km X 1hr/60mins X 1min/60s

            = (75X1000) / (0.621X60X60) meter per second

            = 75000/2235.6 meter per second

            = 33.55 meter per second

∴ Distance D = 33.55 meter per second X 5 seconds

                      = 167.75 meters

3 0
3 years ago
At Silver Gym, membership is $35 per month, and personal training sessions are $30 each. At Fit Factor,
Vanyuwa [196]

Answer:

5 sessions each

Step-by-step explanation:

Let the personal training sessions be x.

<u>Then at Silver Gym Sarah would spend:</u>

  • 35 + 30x

<u>And at Fit Factor she would spend:</u>

  • 85 + 20x

<u>Since total costs are same, the amounts will be equal:</u>

  • 35+30x = 85 + 20x
  • 30x - 20x = 85 - 35
  • 10 x = 50
  • x= 50/10
  • x= 5

So Sarah would buy 5 training sessions for each of the gyms.

And she would spend $185 at each.

3 0
3 years ago
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