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aev [14]
3 years ago
5

У = 3х + 1 у= 2х Using substitution

Mathematics
1 answer:
spin [16.1K]3 years ago
3 0

Answer: x = -2, y = -5

Step-by-step explanation: There you go btw wanna trade r o b l o x acc.

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6870000000000000 scientific notation
hjlf

Answer:

6.87 x 10^15

Step-by-step explanation:

6.87 * 10^15 = 6870000000000000

Hope this helps :)

P.S. Message me if this is wrong

P.P.S Hope you have a great day!

8 0
2 years ago
a store is having a sale on walnuts and chocolate chips. for 3 pounds of walnuts and 5 pounds of chocolate chips, the total cost
Step2247 [10]

Answer:

  • Walnuts - $1.25, chocolate chips - $3.25

Step-by-step explanation:

Let walnuts = x, chocolate chips = y

<u>Set a system and solve:</u>

  • 3x + 5y = 20
  • 6x + 2y = 14

<u>Double the first equation and subtract the second one from it:</u>

  • 6x + 10y - 6x - 2y = 40 - 14
  • 8y = 26
  • y = 26/8
  • y = 3.25

<u>Find the value of x:</u>

  • 6x + 3.25*2 = 14
  • 6x = 14 - 6.5
  • 6x = 7.5
  • x = 7.5/6
  • x = 1.25
7 0
2 years ago
If your input is 15 for the rule, "divide by 5 then multiply by 2", what would be your output?
Dimas [21]

Answer:

The answer is 6.

Step-by-step explanation:

15 divided by 5 is 3 times 2 is 6.

4 0
2 years ago
Read 2 more answers
What is the area of the semi circle if the diameter is 10 cm
Fudgin [204]

Answer:

39.25 cm

Step-by-step explanation:

The formula for a circle is pi x radius x radius.

So to get the radius, you multiply 10 and 1/2.  You should get 5.  Then you multiply 5 by 5.  You should get 25.

Then you multiply 3.14 and 25.  You should get 78.5.

The last step is to divide 2 by 78.5. You should get 39.25

3 0
3 years ago
Read 2 more answers
30 POINTS I NEED HELP PLZ
IRISSAK [1]

Answer:

120

Step-by-step explanation:

to find the volume you just do length x width x height.

7 0
2 years ago
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