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galina1969 [7]
3 years ago
8

Please help!! I’ll mark you as brainly

Mathematics
2 answers:
fiasKO [112]3 years ago
7 0
Add the two equations together.

5y=20
y=4

Substitute that back into one of the equations.

4x+3y=6
4x+3(4)=6
4x=-6
x=-3/2

So, the solution is x=-3/2, y=4.

The answer, therefore, is D.

Hope this helps!
77julia77 [94]3 years ago
6 0
The correct choice is D .
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81
Rasek [7]

Answer:

2.6

Step-by-step explanation:

7 0
3 years ago
The Academic Computing Center has five trainers available in its computer labs to provide training sessions to students. Assume
kondor19780726 [428]

Answer:

87.72%

Step-by-step explanation:

Data provided in the question:

Design capacity of the system = 1900 students per semester

Effective capacity = 90% of design capacity

Actual number of students = 1500

Now,

Efficiency = [ [ Actual capacity ] ÷ [ Effective capacity ] ] × 100%

also,

Effective capacity = 90% of 1900

= 0.90 × 1900

= 1710

Efficiency = [ 1500 ÷ 1710 ] × 100%

= 0.8772 × 100%

= 87.72%

7 0
3 years ago
Solve equation. <br><br> X^2-4x-12 = 0
ser-zykov [4K]

Answer:

Step-by-step explanation:

x2 - 4x - 12 = 0

x2 - 6x + 2x - 12= 0

x(x - 6) + 2(x - 6) = 0

x + 2 = 0

x = - 2

x - 6 = 0

x = 6

5 0
3 years ago
Solve this equation -4(X-26)=-200
jek_recluse [69]

Answer:

x = 76

Step-by-step explanation:

First, distribute -4:

-4x + 104 = -200

Isolate x:

-4x = -200 - 104 = -304

x = -304/-4 = 76

5 0
1 year ago
Read 2 more answers
Help needed ASAP
pogonyaev

Answer:

D) (8,-22)

Step-by-step explanation:

I used my graphing calculator.

6 0
2 years ago
Read 2 more answers
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