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Yanka [14]
3 years ago
11

Solve each system of equation y=x+1 y=2x-1

Mathematics
1 answer:
puteri [66]3 years ago
5 0

Answer:

{X=2Y=3 Explanation: Combining the two equations, we find: 2X−1=Y=X+1 Subtract X from both ends to get: X−1=1 Add 1 to both sides to get: X=2 Then: Y=X+1=2+1=3 Notes In general, given two equations in X and Y, then you can (attempt to) solve by substitution as follows: Choose one of the equations from which it is easiest to derive a formula for X in terms of Y or Y in terms of X. Then substitute the resulting formula in the other equation to get an equation in one variable. Solve the resulting equation, then substitute the value you have found into one of the other equations to find the other variable's value.

Step-by-step explanation:

hope this helps and plz give ne brainlist :)

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Jennifer sets her binoculars to enlarge objects 10 times their actual size. If the length of an ant is 0.52 inches, what is its
Serga [27]

Answer:

The length as seen through her binoculars is of 5.2 inches.

Step-by-step explanation:

The length of an ant is 0.52 inches, what is its length as seen through her binoculars?

The binocular is set to enlarge the object 10 times their actual size.

We have that the actual length is 0.52 inches.

0.52*10 = 5.2 inches

The length as seen through her binoculars is of 5.2 inches.

6 0
3 years ago
How do I solve these?
Mnenie [13.5K]
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4 0
3 years ago
What is the solution for <br> x - 4 &lt; 3
Nikitich [7]
X < 7! just add 4 to both sides.
3 0
3 years ago
The circumference of the earth is 2.4x109 miles. if you traveled at an average of 8.5x10 miles per hour, how long would it take
pshichka [43]

Answer:

282 hr   <======= see below

Step-by-step explanation:

Distance / rate = time

2.4 x 10^9 mi / 85 m/hr   = 28235294 hr

 You must have left the power of 10 off of your speed

     probably should be   8.5 x 10^6  perhaps?   then answer is 282

<h3>If speed was 8.5 x 10^5   then answer becomes ~ 2820   </h3>
8 0
2 years ago
A basketball team played 15 games and won 80% of them. If the team expects to play 30 games in all, how many more games must it
Sati [7]

Answer:

C

Step-by-step explanation:

First, find out how many games they won:

x/15 = 80/100

Cross multiply

x × 100 = 15 × 80

100x = 1200

x = 12

They won 12 out of 15 games

Second, find out how many wins out of 30 games are needed to have a 90% winning percentage

x/30 = 90/100

Cross multiply

x × 100 = 30 × 90

100x = 2700

x = 27

27 game wins are needed to have a 90% winning percentage

Lastly, find the difference between 27 wins (total needed) and 12 wins (total number of wins they currently have)

27 - 12 = 15

They need to win 15 more games to have a 90% winning percentage

4 0
3 years ago
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