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3 years ago

Halp asppgive brialest

Mathematics

1 answer:

Masja [62]3 years ago

7 0

Answer:

Cant see the full photo {error}

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Solve the equation for the variable numerically using a

tangare [24]

Answer:

x= 12

Step-by-step explanation

3x+8=44

subtract 8 from both sides: 3x+8= 44

-8 -8

3x=36

then divide by 3 on both sides

3x=36

3 3

which leaves : x=12

my explaining is horrible but i hope this helps

8 0

3 years ago

g Given the system of equations: 15 c1 – 5 c2 – c3 = 2400 - 5 c1 + 18 c2 – 6 c3 = 3500 - 4 c1 - c2 + 12 c3 = 4000 (a) Calculate

denpristay [2]

Answer

(a)

$A^{-1} = \frac{1}{3493} \begin{pmatrix} 210 && -59 && -12 \\ 84 && 176 && 95 \\ 77 && -5 && 295 \end{pmatrix}$

(b)

$A^{-1} b = \begin{pmatrix} \frac{500}{7} \\\\ \frac{2400}{7} \\\\ \frac{2700}{7} \end{pmatrix}$

Step-by-step explanation:

Remember that when you want to solve a problem like this, you express the equation as following

$Ax = b$

So, if you know the inverse of $A$ then

$x = A^{-1} b$

For this case

$A = \begin{pmatrix} 15 && 5 && -1 \\ -5 && 18 && -6 \\ -4 && -1 && 12 \end{pmatrix}$

Now for this case the inverse of A would be

$A^{-1} = \frac{1}{3493} \begin{pmatrix} 210 && -59 && -12 \\ 84 && 176 && 95 \\ 77 && -5 && 295 \end{pmatrix}$

Then when you multiply with the vector solution

$A^{-1} b = \frac{1}{3493} \begin{pmatrix} 210 && -59 && -12 \\ 84 && 176 && 95 \\ 77 && -5 && 295 \end{pmatrix} * \begin{pmatrix} 2400 \\ 3500 \\ 4000 \end{pmatrix} = \frac{1}{3493} \begin{pmatrix} 249500 \\ 1197600 \\ 1347300 \end{pmatrix}\\\\\\= \begin{pmatrix} \frac{500}{7} \\\\ \frac{2400}{7} \\\\ \frac{2700}{7} \end{pmatrix}$

So from that information you can conclude that the solution to the system of equations is x = 500/7 y = 2400/7 and z = 2700/7

7 0

3 years ago

56 + -90 * 2 - -17 =

julsineya [31]

Answer: -1654

Step-by-step explanation:

4 0

3 years ago

Please help and will give brainliest

ser-zykov [4K]

9514 1404 393

Answer:

12 m³

Step-by-step explanation:

The bottom platform has dimensions 2m × 4m × 3m, so a volume of ...

V = LWH

V = (2 m)(4 m)(3 m) = 24 m³

The top platform has dimensions 2m × 3m × 2m, so a volume of ...

V = (2 m)(3 m)(2 m) = 12 m³

The bottom platform has a larger volume by ...

24 m³ -12 m³ = 12 m³

The bottom prism has a 12 m³ larger volume.

6 0

3 years ago

Read 2 more answers

Six less than a twice a number is that of that number plus 20

Natasha_Volkova [10]

Answer:

The number N = 26

Step-by-step explanation:

The statement is :

Six less than twice a number is that of that number plus 20

The statement now written in digits as

Let the number be N

So, 2 N - 6 = N + 20

Or, 2 N - N = 20 + 6

Or, N = 26

Hence the number N is 26 Answer

4 0

3 years ago

Halp asppgive brialest​

Halp asppgive brialest