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Alex_Xolod [135]
3 years ago
11

Substitution method 4a=4-b 4a=5-b How to do this

Mathematics
1 answer:
Rufina [12.5K]3 years ago
6 0
A "solution" to this pair of equations is a pair of numbers, for 'a' and 'b',
that make the equations true statements.

I can tell you right now that this system of equations has no solution.
Here, let me show you why:

<span>           4a = 4 - b
           4a = 5 - b

Subtract the bottom equation from the top one:

             0 = -1

Can you think of any numbers for 'a' and 'b' that could
make  0  equal to  -1 ?

I can't either.

There are no numbers for 'a' and 'b' that can make both equations true
statements.  That's just another way to say that the system of equations
has no solution.</span>


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On a cold February morning, the radiator fluid in Stanley’s car is -18 degrees When the engine is running, the temperature goes
Rasek [7]

Remark

This is an arithmetic progression. You have the first and last terms and the difference.

Givens

a = - 18

L = 60

d = 4.5        

Equation

L = a + (n - 1)d

Solve

60 = -18 + (n - 1) * 4.5   Add 18 to both side

60 + 18 = (n - 1) * 4.5      

78 = (n - 1) * 4.5           Divide both sides by 4.5

78/4.5 = n - 1

17.3333 = n - 1             Add 1 to both  sides.

18.3333 = n

Conclusion

It will that 18 1/3 or 18.33333 minutes to get the from -18 to 60 degrees.


3 0
2 years ago
Solve the following equation for x: 5x + 3y = 15.
Blizzard [7]

Answer:

x = negative three fifthsy + 3

Step-by-step explanation:

5x + 3y = 15

Subtract 3y from both the sides,

5x = 15 - 3y

Divide by 5 on both sides,

x = -3y/5 + 15/5

x = -3y/5 + 3

7 0
3 years ago
Pls pls help i realy need help
lisov135 [29]

Answer:

a <= 3

Step-by-step explanation:

4 0
3 years ago
Solve the expression:
Novosadov [1.4K]

Answer:

3*2+4=6+4=10 and 4*6+6-10=24+6-10=30-10=30

3 0
2 years ago
ACTIVITY 2
Harlamova29_29 [7]

Answer:

1.False

2.False

3.True

4.True

5.not sure, it could be true or false because adjacent angles can add up to 180 or even 360 as long as they have the same vertex

7 0
2 years ago
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