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4 years ago

8

5. If the lines 2x + 3ay – 1 = 0 and 3x + 4y + 1 = 9 are mutually perpendicular, then the value of a is (1 Point) O a. O b.3 O-1

/2

1 answer:

lianna [129]4 years ago

6 0

because the multiplication Slope of 2 perpendicular is -1

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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 $y=25+0.75x$ .

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3 years ago

Graph y = 2x - 5 using the

borishaifa [10]

O The line increases from the left to right

O The line crosses the x-axis at 2.5

O The line does not enter quadrant II at all...

...Are your answers

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3 years ago

Which graph has a slope of 4/5

Lana71 [14]

Answer: whichever graph that goes up 4 and over 5

Step-by-step explanation:

rise over run, 4 up, 5 right

to find it just look at two points on the line and count how many up and how many horizontal units there are between them :)

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4 years ago

Devante has a lunch account in the school cafeteria His starting balance at the beginning of the month is $35.50. The first wook

Alisiya [41]

Answer:

D the amount of money he pays for each lunch

Step-by-step explanation:

In each lunch Devante has, he pays 2,50 $ according to:

Money in t = t₀ he has 35,50 $ paid 3 lunches and spent

35,50 - 28 = 7,5

Then the cost of each lunch is 7,5 / 3 = 2,5 $

After that

bought 5 lunches and spent 28 - 15,5 = 12,50

Again 12,5 / 5 = 2,5 $

Now the model for the situation is a straight line with a slope 2,5

In an x , y cartesian system in which y is money in the account and x is the number of lunches, such a straight line will be

y = b - m*x ( b the intercept on y and m the negative slope)

y = 35,50 - 2,5*x

So answering the question is lyrics D the amount of money he pays for each lunch

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3 years ago

If a probability distribution is 1/5,1/5,1/2,x, what is the value of x?

sattari [20]

Its C. becuase the sum of probabilities must be 1

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3 years ago

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