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sukhopar [10]
3 years ago
8

Which ordered pair (a,b) is a solution to the given system of linear equations.

Mathematics
2 answers:
Readme [11.4K]3 years ago
7 0

Answer:

A

Step-by-step explanation:

egoroff_w [7]3 years ago
6 0

Answer:

A. (-13,-3)

Step-by-step explanation:

Solve the system of two equations:

\left\{\begin{array}{l}-2a+3b=14\\a-4b=3\end{array}\right.

From the second equation:

a=3+4b

Substitute it into the first equation:

-2(3+4b)+3b=14\\ \\-6-8b+3b=14\\ \\-8b+3b=14+6\\ \\-5b=20\\ \\5b=-20\\ \\b=-4

So,

a=3+4b=3+4\cdot (-4)=3-16=-13

The solution is (-13,-4)

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Which of the following decimal<br> representations is an example of<br> a rational number?
STALIN [3.7K]
B because the line over the 28 means that it’s repeating and a repeating decimal = rational number example : 27.67777777 is a rational number because it’s repeating and an irrational number would be 27.6719473637
8 0
2 years ago
How can you represent data that relates to two different categories?
siniylev [52]

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you can use a graph like a bar graph or a pie chart. or a table that has two parts like what is linked. make sure for the graph to have a key

Step-by-step explanation:

6 0
2 years ago
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What is the missing length?
skad [1K]

Answer:

6.1

Step-by-step explanation:

The area of a trapezoid is given by

A = 1/2 (b1+b2) * h  where b1 and b2 are the lengths of the bases

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108.6 = 6 (12+p)

Divide each side by 6

108.6 /6 = 12+p

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4 0
2 years ago
Find what percent 591 is of 2364
kati45 [8]
To find the percent you would divide 591 by 2364 
591/2364=.25
.25*100 = 25% 
Does that make sense?
3 0
3 years ago
Read 2 more answers
Sa se gaseasca numerele a si b a caror medie aritmetica este 200 si care sunt invers proportionale cu 8 si respectiv 4,5.
Olenka [21]
Bonjour, (as you write in roumain)

Soient a et b les 2 nombres

(a+b)/2=200==>a+b=400

8/a=4.5/b==>16b=9a

a+9a/16=400
==> 25a/16=400
==>a=400*16/25
==>a=256
et b= 9*256/16; b=144

3 0
3 years ago
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