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3 years ago

6

Mathematics

1 answer:

myrzilka [38]3 years ago

5 0

Answer:

Step-by-step explanation:

3x + 2y = 24

6x + 2y = 30

Multiply the first equation by -2.

-6x - 4y = -48

Add to the second

-2y = -18

y = 9

Plug back in the first.

3x + 2(9) = 24

3x = 6

x = 2

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At Disney World, the ideal height requirements for rides range from 82 cm to 122 cm. Let h represent the height. Write an absolu

Arada [10]

Answer:

Step-by-step explanation:

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3 years ago

Two triangles are shown.

Radda [10]

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3 years ago

Helen bought 3 books and 2 pencil cases. the pencil case cost $8 less than the book. if helen spent $74, how much did a book cos

oksano4ka [1.4K]

The cost of book case be $ 11.6.

<h3>What is linear equation?</h3>

A linear equation is an equation in which the highest power of the variable is always 1. It is also known as a one-degree equation. The standard form of a linear equation in one variable is of the form

Ax + B = 0.

Here, let the cost of book case be $ x

and the cost of pencil case be $ y

Now, Helen purchased 3 books and 2 pencils in $ 74.

3x + 2y = 74 .......(i)

Cost of pencil case $ 8 less than the book.

y - 8 = x ............(ii)

put the value of x in equation (i), we get

3(y - 8) + 2y = 74

3y - 24 + 2y = 74

5y = 74 + 24

5y = 98

y = 98/5

y = $ 19.6

put the value of y in equation (ii), we get

x = y -8

x = 19.6 - 8

x = $ 11.6

Thus, the cost of book case be $ 11.6.

Learn more about linear equation from:

brainly.com/question/11897796

#SPJ1

8 0

2 years ago

What is the value of 9p5?

ICE Princess25 [194]

9.5 is correct (:(:(:

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3 years ago

Evaluate the piecewise function at the indicated values from the domain:

lidiya [134]

In this question, we given a piece-wise function, that has different definitions depending on the domain.

Evaluate the function at x = 0.

The exercise asks for us to evaluate the function at $x = 0$

We have to look at the definition, and see which definition includes $x = 0$ . The equal sign at $x = 0$ is on the second definition, that is:

$f(x) = 1, 0 \leq x < 2$

Thus, at $x = 0$ , the value of the function is 1, and the correct answer is given by option A.

For another example of evaluation of a piece-wise function, you can check brainly.com/question/17966003

7 0

3 years ago