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hodyreva [135]
3 years ago
8

Use algebraic rules of equations to predict the solution type to the system of equations. Include all of your work for full cred

it. {x+y=-4}{y=2x-1}

Mathematics
2 answers:
Tasya [4]3 years ago
8 0

y=-4-x

y=2x-1


-4-x=2x-1

3x=-3

x=-1

y=-3


The type of equation is consistent because they intersect at ( -1,-3 )



mamaluj [8]3 years ago
8 0

<u>Solve Systems of Equations by/Substitution/Elimination :</u>

{x   +     y     =      -4};  {y      =      2x      -      1}

<u>Steps:</u>

x   +   y    =    -4

y     =    2x     -    1

Substitute:      y      =    2x     -   1

[   x       +    2x     -    1 ]    

=           -4

<u>Isolate: </u>    

x     For      x      +     2x      -     1      

=             -4

x               =             -1

<u>For </u>    

y      =     2x    -    1

Substitute:  

x         =       -1

y       =    2(  - 1 )    -     1

2( -1 )   -    1      

=          -3

y        =        -3

Therefore, The Solutions to the Systems of Equations are:

Answers:     x             =         -1,       y              =         -3



Hope that helps!!!!                                     : )

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At Joe's Clown Car Rental Agency, renting a car costs $45 plus $0.75 for every mile it is driven. What is an equation that can b
klasskru [66]

Answer:

y=0.75m+45

Step-by-step explanation:

when you bought the car it was 45, that doesnt change so its a constant

but every mile you drive, it changes, therefore it becomes the dependent or the rate :)

so we just make it into an equation of

y=0.75m+45

where y= the total amount of money owed

and if you wanted to solve for how far the car drove, plug in the 222.5 in for y, as that was the amount owed and solve!

222.5=0.75m+45

177.5=.75m

now divide by .75

m= 236 2/3 miles

hope this helped :))

7 0
3 years ago
It intersects its midline at (-3.5,-0.8) and it has a maximum point at (4.1,0.7) what is the units
kifflom [539]

Answer:

7.7466

Step-by-step explanation:

Hope it helps:)

8 0
3 years ago
PLS ANSWER it CORRECTLY for 25 points<br>​
olchik [2.2K]

Answer:

1. 0

2. 18 th term

3. 209

4. 670

Step-by-step explanation:

1. n^th term  of an A.P = a + (n - 1)d , where n is the term

6 = a + (5 - 1)d ... (i)

5 = a + (6 - 1)d ... (ii)

a + 4d = 6 ... (i)

a + 5d = 5 ... (ii)

Subtracting (ii) - (i) we get;

0 + d = -1 , d = -1

So the common difference (d) = -1

And first term (a);

a + 4(-1) = 6

a = 6 + 4 = 10

11^th term will be;

n_{11} = 10 + -1(11 - 1) = 10 - 10 = 0

2. The A.P is;

1, 4, 7, 10, 14, ....

The first term (a) = 1

The common difference (d) = 3

n_{th} = a + (n - 1)d

52 = 1 + (n - 1)3

3n - 3 + 1 = 52

3n = 52 + 2 = 54

n = 54/3 = 18 th term

3. The A.P is;

4, 9, 14, ... , 254

The first term (a) = 4

The common difference (d) = 5

n_{th} = a + (n - 1)d

To find what term number 254 is;

254 = 4 + (n - 1)5

5n - 5 + 4 = 254

5n = 254 + 1 = 255

n = 255/5 = 51

The 10^th term from the end of the AP is the 42^nd term.

n_{42} =  4 + (42 - 1)5 = 4 + 205 = 209

4. The A.P is;

5, 8, 11, 14, ...

The first term (a) = 5

The common difference (d) = 3

Sum of n terms in an A.P is given by;

s_{n} = \frac{n}{2}(2a + (n - 1)d)

s_{n} = \frac{20}{2}(10 + 19(3) = 10(10 +57) = 670

7 0
3 years ago
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Ray Of Light [21]

Answer: lesser x = 3.76 & greater x = 8.24

Step-by-step explanation: just took the test

7 0
3 years ago
Jane drinks 275 milliliters of juice from a 1 liter container. How much juice is left
Lubov Fominskaja [6]
Well, there's 1000 milliliters in one liter.
Do 1000 - 275. 
You should get 775.

The answer is 775 milliliters of juice.  <span />
8 0
3 years ago
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