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iogann1982 [59]
2 years ago
9

PLS HELP ASAP

Mathematics
1 answer:
slega [8]2 years ago
6 0

Answer:

rn or later?

Step-by-step explanation:

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25% of 68000 is how much
hjlf
1 \% =\frac{1}{100} \\ \\25 \% =\frac{25}{100}=0,25\\ \\25 \% \cdot 68000 = 0,25 \cdot 68000 =17 000


6 0
2 years ago
Read 2 more answers
Use Cramer's rule to find the solution to the following system of linear equations.
slavikrds [6]

Answer:

x = 53

y = 30

Step-by-step explanation:

Step(I):-

Given equations are

x -2y =-7 ...(I)

5x-9y =-5 ..(ii)

The matrix form  AX = B

                    \left[\begin{array}{ccc}1&-2\\ 5  & -9\\\end{array}\right] \left[\begin{array}{ccc}x\\y\\\end{array}\right] = \left[\begin{array}{ccc}-7\\-5\\\end{array}\right]

The determinant

= \left|\begin{array}{ccc}1&-2\\5&-9\\\end{array}\right| = -9+10 =1

By using Cramer's Rule

Δ₁ =      \left[\begin{array}{ccc}-7&-2\\\\-5&-9\end{array}\right]



The determinant is     Δ₁ = -9 X -7 - (10 ) = 53

x = Δ₁ / Δ

x = 53

The determinant

Δ₂ =



Δ₂ = -5 +35

     

 

y = Δ₂/Δ =  30

     

5 0
2 years ago
Read 2 more answers
The number of children at the liberty was 3 times the number of adults. The total number of people at the liberty was 48. How ma
Black_prince [1.1K]

Answer:  32

Step-by-step explanation:

48 people at the liberty and there are 3 times the number of adults 48 divided by 3 would be 16 kids and 48 - 16 would be 32

5 0
3 years ago
Can someone please help me with all 5 of these questions? You don't have to answer all 5 but I would appreciate it if you answer
cupoosta [38]
12 is a
13 is c
14 is d
15 is d
16 is b
7 0
3 years ago
Read 2 more answers
What is the square number of 13 27 81 21 43 48 23 39 45
Setler [38]

The given numbers are 13, 27, 81, 21,43, 48,23,39,45.

Square number is that number which is a perfect square means if you multiply a number by itself the number you obtained is a perfect square i.e it's square root is a natural number.

√13=not a natural number

√27=√3×√3×√3=3√3=irrational number

√81=√9×√9=9=a natural number

√21=not a natural number

√43=not a natural number

√48=4√3=not a natural number

√23=not a natural number

√39=not a natural number

√45=3√5=not a natural number

So, out of following numbers 13 27 81 21 43 48 23 39 45→81 is the only square number.

8 0
3 years ago
Read 2 more answers
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