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Lera25 [3.4K]
2 years ago
9

A+ 2b = 10 2a + b =6

Mathematics
2 answers:
GenaCL600 [577]2 years ago
7 0
First you can solve for b: Subtract a on both sides and get 2b=-a+10, then divide by 2 to get b by itself and get: b=-1/2a+5

Then you can plug in this equation for b in the other: This would give you: 2a+-1/2a+5=6. Then you can use that equation to solve for a and get: 1.5a+5=6, subtract 5, 1.5a=1, divide by 1.5, a=1/1.5

Then you can plug in the value of a to solve for b.


Gennadij [26K]2 years ago
3 0

Answer:

A = 2/3

B = 14/3

Step-by-step explanation:

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The ratio of adults to children on a train in 7:2. There are 245 adults on the train. Find the total number of people on the tra
Kruka [31]

Answer:

315 people

Step-by-step explanation:

Using the given ratio, we can figure out the number of children on the train by doing cross multiplication.

Let x = # of children on train.

7/2 = 245/x

7x = 490

x = 70 children

The total number of people = 70 + 245 = 315 people total

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5 0
3 years ago
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kvasek [131]
The answer is 16 songs
3 0
2 years ago
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Solve for s -7s+3s-6=14
NikAS [45]

Answer:

s=-20/3

Step-by-step explanation:

Line the numbers

7 0
2 years ago
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3(h - 7) + 3 = 9 what is H =
MrRissso [65]

Answer:

9

Step-by-step explanation:

3(h-7)+3=9

3h-21+3=9

3h-18=9

3h=9+18

3h=27

h=27/3

h=9

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7 0
2 years ago
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50 POINTS SOLVE !! ::
satela [25.4K]

Answer:

<h2>k = 31/9</h2><h2>b = 12</h2>

Step-by-step explanation:

<u>k - 4</u> = 3

   9

k/9  = 3(9) + 4

k = 31/9

k = 31/9

<u>8 + b </u> = -5

  -4

8 + b = -5 (-4)

8 +  b = 20

b = 20 - 8

b = 12

4 0
2 years ago
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