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mariarad [96]
3 years ago
13

Can someone help me with this:

Mathematics
1 answer:
kirill [66]3 years ago
5 0

Answer:

60.8$

Step-by-step explanation:

2(6.22)+3(5.33)+5(8.62)=12.44+15.99+43.1=71.53

71.53_0.15(71.53)=60.8$

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Use an inverse matrix to solve for the system of equations.
IrinaK [193]

Answer:

(-1, 7, 2)

Step-by-step explanation:

we suppose that ax + by + cz = d for the matrix

D = det [ 0    4     7] = 100

              -6   0    -2

               1    2     8

Dx= det [ 14    4     7] = - 100

               10   0    -2

               -3    2     8

Dy= det [ 0    14    7] = 700

               -6   10    -2

                1    -3    8

Dz = det [ 0    4    14] = 200

               -6   0     10

                1    2     -3

So the solution is:

x = Dx/D = -1, y = Dy/D= 7, z =Dz/D = 2

(-1, 7, 2)

have a good day!

4 0
3 years ago
2x + y = 6<br> y = 3x + 4 <br> What is the resulting equation?
Aleksandr-060686 [28]
2x+3x+4=6
5x+4=6
5x=2
x=1.5?
7 0
3 years ago
Read 2 more answers
If the profits in your consulting business increase by 8​% one year and decrease by 2% the following​ year, your profits are up
olchik [2.2K]

Answer:

not true....

assume $100 start.

in year 1 you are at $108 (up 8%)

in year 2  $108(.98) ... that is 2% down = 105.84...

thus your profit is up only 5.84% over the two years

Step-by-step explanation:

6 0
3 years ago
The panthers team won exactly 2 of its first 9 games. By winning all its remaining N games, the Panthers ended with victories in
Soloha48 [4]

Answer:

5

Step-by-step explanation:

2 out of 9 games won

After the N games, the games won would be HALF. Thus, we can write a ratio and solve for the variable N:

\frac{2+N}{9+N}=\frac{1}{2}

Now we cross multiply and solve for N [the number of remaining games that all are won]:

\frac{2+N}{9+N}=\frac{1}{2}\\2(2+N)=1(9+N)\\4+2N=9+N\\2N-N=9-4\\N=5

N represents 5

8 0
3 years ago
If you have 4 B's and 2 A's then what is your GPA
kodGreya [7K]

Answer:

3.33

Step-by-step explanation:

6 0
3 years ago
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