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marta [7]
3 years ago
10

Y+2x=7 and x=3+y Solve each system of equations using substitution

Mathematics
1 answer:
Alex3 years ago
4 0

Answer:

y+2x=7 (1)

x=3+y (2)

Replace x = 3+y (2) into (1) => y+2(3+y) = 7

=> y = 1/3 and x = 3+1/3 =10/3

Step-by-step explanation:

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kiruha [24]
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8 0
2 years ago
Use two unit multipliers to convert 62 square centimeters to square inches
gtnhenbr [62]

Answer:

Step-by-step explanation:

You only need one, but to use two let's go from cm to mm an then mm to inches.  there are 100 mm^2 in a cm^2 so that's 100 mm^2/ 1 cm^2 and then there's  645.16 mm^2 in one square inch so that one will be 1 in^2/ 645.16 mm^2 so writing it out we get:

62 cm^2 * 100 mm^2/ 1 cm^2 *  1 in^2/ 645.16 mm^2

units all cancel out to get in^2 an then you just multiply 62*100/645.16 = 9.61 so that leaves us with 9.61 in^2.

Let me know if there's something you don't understand.  

8 0
3 years ago
Evaluate tu/4 if t =3 and u= 8
kykrilka [37]
Easy

(3)(8)/4
24/4
6

The answer is 6, your welcome
4 0
3 years ago
Why is this number not in scientific<br> notation?<br> 36.5 x 10^6<br> please help
andrew11 [14]

Answer:

The first number should be a number between 1 and 10 (see explanation)

Step-by-step explanation:

For a number to be in scientific notation, a number between 1 and 10 has to be multiplied by a power of 10.

36.5 is not between 1 and 10, alternatively, you can rearrange it:

3.65 x 10^7      <----This would be the correct scientific notation

3 0
3 years ago
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