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3 years ago

–9(2x – 5) without parentheses.

Mathematics

1 answer:

Arturiano [62]3 years ago

8 0

Distribute -9 to both terms

-9(2x-5) = -9(2x) -9(-5)
= -18x +45

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Literal equations 2x-3y=8 solve for y

jeka94

2x-3y = 8

Add 3y on both sides

2x = 8 + 3y

Subtract 8 on both sides

3y = 2x - 8

Divide 3 on both sides

 $y= \frac{2}{3}x- \frac{8}{3}$

4 0

4 years ago

Read 2 more answers

541 (484) 783, 437 (?) 642

alexandr402 [8]

Answer:

541 (484) 783, 437 (410) 642

Step-by-step explanation:

Required

Fill in the bracket

First, we generate a formula for the first sequence: 541 (484) 783

$484 = 2 * [783 - 541]$

$484 = 2 * [242]$

$484 = 2 * 242$

$484 = 484$

Using the same formula for the second sequence: 437 (?) 642

$x = 2 * [642 - 437]$

Where x represents the empty bracket

$x = 2 * [205]$

$x = 2 * 205$

$x = 410$

3 0

3 years ago

Use a table of values to find the solution to the equation f(x)=h(x) where

GuDViN [60]

9514 1404 393

Answer:

x = 2 1/3

Step-by-step explanation:

We can examine the equations to see where the solution lies.

f(x) = (2/3) -x

This has an x-intercept where y=0, at x=2/3. It has a y-intercept where x=0, at y=2/3. Its slope is -1.

h(x) = 3 -2x

This has an x-intercept where y=0, at x=3/2. It has a y-intercept where x=0, at y=3. Its slope is -2.

In the first quadrant, the graph of h(x) is farther from the origin and steeper than the graph of f(x). The lines must cross in the 4th quadrant at some value of x that is greater than 3/2. The fraction in the definition of f(x) suggests that the solution will be a multiple of 1/3.

The attached table shows a couple of guesses at values of x that would make f(x) = h(x). We find that x = 7/3 is the solution we're looking for.

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Additional comment

Repetitive function evaluations are done conveniently and with fewer errors by a calculator or spreadsheet that can work with tables of values. Here, we have used a graphing calculator. These tools are readily available for free on almost any phone, tablet, or desktop computer platform.