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Zina [86]
3 years ago
6

Evaluate the following expression 5(1 3)-3(2 -1)

Mathematics
1 answer:
BARSIC [14]3 years ago
3 0

Answer:

Step-by-step explanation:

This problem tests your understanding of order of operations rules.

Here you must do any work inside parentheses first, followed by multiplication, followed by subtraction:

5(13) - 3(2 -1) would be 65 -3(1), or 62.

If you actually meant 5(1 - 3) - 3(2 - 1), then you'd have

5(-2) - 3(1) = -10 - 3 = -13

Please compare the problem you've shared with the original problem, to ensure that these match.

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What is the value of z in the equation 3z − 7 = 14? 3 4 7 21
STALIN [3.7K]
3z - 7 = 14    |add 7 to both sides

3z = 21    |divide both sides by 3

z = 7
8 0
4 years ago
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Determine which ordered pairs fall on the graph of f(x) = -2x-1
Pavlova-9 [17]

Answer:

No order Pair fall on the graph

Step-by-step explanation:

The given Function is

f(x)= -2x -1       ...............(i)

Now to see whether these ordered pairs Lay on it we will put each ordered pair in the equation (i)


Lets take first ordered pair (1,1)

here x = 1

putting it in (i) gives

f(1)= -2(1) -1

f(1)= -3

this is not equal to 1 so the order pair (1,1) does not fall on function f(x)= -2x -1

Lets take second ordered pair (-1,-4)

here x = -1

putting it in (i) gives

f(-1)= -2(-1) -1

f(-1)= 1

this is not equal to -4 so the order pair (-1,4) does not fall on function f(x)= -2x -1


Lets take third ordered pair (-2,-1/8)

here x = -2

putting it in (i) gives

f(-2)= -2(-2) -1

f(-2)= 3

this is not equal to -1/8 so the order pair (-2,1/8) does not fall on function f(x)= -2x -1


Lets take fourth ordered pair (0,-1/2)

here x = 0

putting it in (i) gives

f(0)= -2(0) -1

f(0)= -1

this is not equal to -1/2 so the order pair (0,-1/2) does not fall on function f(x)= -2x -1


3 0
4 years ago
A story about the doubles plus 2 fact 5+7
miss Akunina [59]
The answer is 12 because 5+7=12
8 0
3 years ago
What is the value of x
geniusboy [140]

Answer & Step-by-step explanation:

For this problem, we will be doing subtraction. First, we need to find the measurement of the angle beside the angle that measures 95°. We can do this by subtracting 95 from 180 because those angles are a linear pair meaning their measurements equal 180°.

180 - 95 = 85

So, the measurement of that angle is 85°. Now that we know this measurement, we can find the value of x. We can do this by adding 60 to 85 and then subtracting that sum from 180. All triangles have a total interior angle sum of 180°.

180 - (60 + 95)

180 - 155

25

So, the value of x is 25°

6 0
4 years ago
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PLEASE HELP SO I CAN GET THIS OVER WITH!!! WILL GIVE BRAINLIEST!!!!
charle [14.2K]

Her first visit and follow up 60 mins + 30 mins

The limit is 8 follow ups per day

The hospital has 8 hrs available for appointments

Her first visit cost $120 (60 mins) as her follow up was $70 (30 mins)

X = Visits

Y = Follow-ups

And since her first visit and follow up equals to an hour and 30 mins, meaning for it to all add up into the 8 hrs for the appointment, it'll be... 1 hr, 30 mins/ 3 hrs/ 4 hrs, 30 mins/ 6 hrs/ 7 hrs, 30 mins/ <em>9 hrs</em>

Eight hours is the limit so that means it equals to 5 visits and 6 follow ups, due to if you want it to be the whole 8 hours.

3 0
3 years ago
Read 2 more answers
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