All categories

3 years ago

Solve the system of linear equations by elimination. 12x−7y=−2 8x+11y=30

Mathematics

1 answer:

stellarik [79]3 years ago

6 0

Answer:

x=1

y=2

Step-by-step explanation:

You might be interested in

Our class has 50 students. Assuming that no students are born on leap days (February29), what is the probability that no two stu

madreJ [45]

Answer: a) $\dfrac{799}{31250}$ b) $\dfrac{30451}{31250}$

Step-by-step explanation:

Since we have given that

Number of days in a year = 365

Number of students = 50

Probability that no two students share the same birthday. It means each student has different birthday.

Probability(no two students share the same birthday) $=\dfrac{365-1}{365}\times \dfrac{365-2}{365}........\times \dfrac{365-50}{365}$

Probability(no two students share the same birthday) $=\dfrac{^{365}P_{50}}{365^{50}}$

Probability(no two students share the same birthday) $=\dfrac{799}{31250}\approx 0.025568$

Probability that at least one of the students has the same birthday as another student in the class is given by

$1-P(\text{no student share the same birthday})\\\\=1-\dfrac{799}{31250}\\\\=\dfrac{30451}{31250}=0.974432$

5 0

4 years ago

How would you graph the equation above y=3x+3 on a coordinate plane?

Trava [24]

Answer:

You would start at 3 on the y-axis and go up 1 and right 3

Step-by-step explanation:

6 0

3 years ago

What is 7x5+9(2x9)2+3(8+6)5-=___?

Ne4ueva [31]

Using order of operations, the answer is 569.

6 0

4 years ago

Read 2 more answers

Solve 0.25[2.5x + 1.5(x – 4)] = –x.

zheka24 [161]

Answer:

X = 0.75

Step-by-step explanation:

0.25[2.5x + 1.5(X-4)]= -X

0.25[2.5x + 1.5x - 6] = -x

0.25[4x -6] = -x

1x + x = 1.5

2x = 1.5

x = 1.5/2

x = 0.75

8 0

3 years ago

Question 5<br>(a) Complete the square for x2 - 10x + 3.<br>(b)<br>Hence solve x2 - 10x + 3 = 0

earnstyle [38]

Answer:

B olabilir bence b sikki

7 0

3 years ago