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3 years ago

What is the solution to this system of equations?

Mathematics

2 answers:

sveticcg [70]3 years ago

8 0

Answer:

(-2,4)

Step-by-step explanation:

The solution is where the two lines intercept therefore if (x,y) is how to wright a point, then it would be (-2,4)

pishuonlain [190]3 years ago

3 0

Answer:a

Step-by-step explanation:

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a studernt has pased 60 percent of 20 quizzes he has written so far successfully. if the student 50 quizzes during the year, and

faust18 [17]

Answer:

72%

Step-by-step explanation:

There are a total of 50 quizzes in the year

From the first 20, the student passes 60%. This makes a total of

$\frac{60}{100} (20) = 12$

12 passes

Out of the remaining 30 quizzes the student passes in 80% of them. This makes a total of

$\frac{80}{100} (30) = 12$

24 passes

Adding the two values

12 + 24 = 36

The student passes 36 quizzes out of 50.

We convert this to a percentage

$\frac{36}{50} (100) = 72$ %

5 0

3 years ago

Ab + 2b²<br> where<br> a = 7 b=4

Veronika [31]

Answer:

Step-by-step explanation:

$a=7\\b=4\\ab+2b^2\\(7)*(4)+2*(4)^2\\28+2*16\\28+32\\=\fbox{60}$

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2 years ago

6 1/4 plus 9 4/5 help

Sergeu [11.5K]

Answer: 321/20 or 16 1/20

Step-by-step explanation:

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3 years ago

A biker travels 55 miles in 5 hours. What is the bikers speed in miles per hour? *

lapo4ka [179]

Answer:

the bikers speed is 11mph

Step-by-step explanation:

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3 years ago

Subtract 6x^2-5x+3 from (3x^2+8x-4)

Art [367]

3x^2 + 8x - 4 - (6x^2 - 5x + 3)....distribute thru the parenthesis
3x^2 + 8x - 4 - 6x^2 + 5x - 3 .....combine like terms
-3x^2 + 13x - 7 <==

8 0

3 years ago