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3 years ago

Decide if these lines are parallel perpendicular or neither 2x+5y = 1 and 5x-2y = 1

Mathematics

1 answer:

goblinko [34]3 years ago

3 0

Answer: neither

Explanation:

y=1/5+2/5x

y=-1/5-2/5x

For it to be perpendicular the slopes have to be opposite reciprocals and they are not. For it to be parallel the slopes have to be the same and they too are not.

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Is x=-2 a solution for the equation below?

Misha Larkins [42]

Answer:

Step-by-step explanation:

-7+x^2-3x = 9+x-10

-7+(-2)^2-3*(-2) 9+(-2)-10

-7+4+6 9-12

3 > -3

if we substitute -2 to x, answer is not equal

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3 years ago

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A number of fiction books at a library was 3/4 of the total number of books. After 592 fiction books were donated to the library

Zielflug [23.3K]

There approximately 7133 books in the library;

Data;

Let the number of total books = x
Number of fictional books = 3/4x

<h3>Word Problem</h3>

To solve this problem, we simply need to use an equation to explain the word problem into mathematical statements.

Let the total number of books be represented by x

The number of fictional books = 3/4x

After 592 fictional books were donated;

$\frac{3x}{4} + 592 = \frac{5}{6}x$

Let collect like terms and solve

$\frac{3x}{4} +592 = \frac{5}{6} x\\\frac{5}{6}x - \frac{3x}{4} = 592\\ 0.083x=592\\x = 592/0.083\\x = 7132.53$

There approximately 7133 books in the library;

Learn more on word problems here;

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2 years ago

The solution set for <br> 6a^2-a-5=0

Alex_Xolod [135]

Answer:

a=1 or a=5/6

Step-by-step explanation:

I'm going to attempt to factor 6a^2-a-5

a=6

b=-1

c=-5

Find two numbers that multiply to be a*c and add to be b.

a*c=-30 =-6(5)

b=-1 =-6+5

So replace -a with -6a+5a in the expression we started with

6a^2-6a+5a-5

now we factor by grouping

6a(a-1)+5(a-1)

(a-1)(6a-5)

Now let's solve the equation:

(a-1)(6a-5)=0

So a=1 or a=5/6

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3 years ago

Simplify (39x+54y)+(46x-28y)

Dmitry [639]

Hope this helps you out.... 85x + 26y <span>
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3 years ago

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A server worked a shift where he served 13 entrees, 8 appetizers, and 6 desserts . What percentage of his servings were

ryzh [129]

Answer:

entrees 48% appetizers 30% desserts 22%

Step-by-step explanation:

18+8+6=27

13/27

8/27

6/27

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3 years ago