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3 years ago

7= -5x

Mathematics

2 answers:

MariettaO [177]3 years ago

6 0

Option 4. Multiply each side by -1/5
It’s the same as dividing by -5.
The - cancels out and 5/1x1/5 is equal to one

exis [7]3 years ago

4 0

Option 2 multiple each side by -5

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Can someone please show the work for 2/x = 13/39 (proportions) I already have the answer to it, I just need to do the work. Plea

Free_Kalibri [48]

Answer:

How did you find the answer without doing the work?

Step-by-step explanation:

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4 years ago

Please help, this is my review, and I have a test tomorrow. But based on what I did, none of my answers matched the ones below.

lukranit [14]

Answer:

a) 21, 34.5, 54.75, 85.125

Step-by-step explanation:

All of the answer choices differ in the first term, so that is the only one you need to figure here. However, we will do them all, so you can see it done.

We note that x > 0 for all of the values of x that we need to use. That means the recursive relation is the one we're using for computation.

f(1) = 3/2·f(0) +3 = (3/2)(12) + 3 = 18 +3 = 21 . . . . . . matches choice (a)

f(2) = 3/2·f(1) +3 = (3/2)(21) +3 = 63/2 +3 = 69/2 = 34.5

f(3) = 3/2·f(2) +3 = (3/2)(34.5) +3 = 51.75 +3 = 54.75

f(4) = 3/2·f(3) +3 = (3/2)(54.75) +3 = 82.125 +3 = 85.125

When you're computing for sequential input values, each depends on the previous value you computed.

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<em>Additional comment</em>

Using an exponential regression calculator (or spreadsheet), the explicit function can be found to be ...

f(x) = 18·1.5^x -6

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2 years ago

An online photo services charge $20 to make a photo book with 16 pages each extra page cost a dollar 75 the cost to ship the com

Alisiya [41]

Answer:

The expression to determine the total cost in dollars is $y=25+0.75x$ .

Step-by-step explanation:

Given:

Service charge to make a photo book = $20

Cost per extra page = $0.75

Cost to ship the complete photo book = $5

We need to write expression to determine the total cost in dollars.

Solution:

Let the number of extra pages be denoted by 'x'.

Also Let the Total cost be denoted by 'y'.

Now we can say that;

Total cost will be equal to sum of Service charge to make a photo book and Cost per extra page multiplied by number of extra pages and Cost to ship the complete photo book.

framing in equation form we get;

$y=20+0.75x+5\\\\y=25+0.75x$

Hence the expression to determine the total cost in dollars is $y=25+0.75x$ .

3 0

3 years ago

Hi! I'm on my sisters account, and we are trying to do a challenge, so can you please help me!

yawa3891 [41]

Answer:

B, Rhombus

Step-by-step explanation:

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3 years ago

Read 2 more answers

Solve the following Absolute Value Equation. Type the 2 solutions in the

klemol [59]

Answer:

-9, 15

Step-by-step explanation:

Subtract 7 and multiply by 4

1/4 |2x-6| +7 = 13

1/4 |2x -6| = 6

|2x -6| = 24

2x -6 = ± 24

2x = 6 ±24

x = 3 ±12

x = -9, 15

_____

For graphing purposes, it is often convenient to rewrite the equation so the solutions are where the function is zero. Here, we can do that by subtracting 13 from the equation.

(1/4 |2x -6| +7) -13 = 0

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3 years ago