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3 years ago

How can parentheses be added to the following equation to make it true?

Mathematics

1 answer:

Viktor [21]3 years ago

5 0

Answer:

8 - (3 x 2) - (1 + 1) = 0

8 - 3 x 2 - (1 + 1) = 0

Remember PEMDAS.

If I put parenthesis around 3 x 2, I get 6.

But 8 - 6 = 2

How can we make 2 - 1 + 1 = 0?

If we look at PEMDAS, we know (2 - 1) + 1 = 2, but the answer needs to be 0.

So now try 2 - (1 + 1) and that gives me 0.

And it says parentheses...but you can also do 8 - 3 x 2 - (1 + 1) = 0.

You might be interested in

Gordon Ramsey made a stew that contained shrimp and potatoes. Shrimp was expensive, so he used three times the amount of potatoe

Burka [1]

Answer:

He bough 1.25 lbs of shrimp and 3.75 lbs of potato.

Step-by-step explanation:

Since the stew is composed of shrimps and potatoes, then the sum of the weighs of these ingredients must be equal to the weigh of the stew, so we have:

$shrimp + potato = 5$

We also know that he bought three times more potatoes than shrimps, therefore:

$potato = 3*shrimp$

Using the second equation on the first one, we have:

$shrimp + 3*shrimp = 5\\4*shrimp = 5\\shrimp = \frac{5}{4} = 1.25$

$potato = 3*shrimp = 3*1.25 = 3.75$

He bough 1.25 lbs of shrimp and 3.75 lbs of potato.

5 0

3 years ago

Can somebody help me

lesya692 [45]

Answer:

the answer is D because it depends of the velocity

5 0

3 years ago

Is mode a measure of center of center or a measure of variation

Sloan [31]

Answer:

a measure of central tendency

Step-by-step explanation:

The mode of a given data set is a measure of central tendency.

Statistical tools are usually classified as either a measure of central tendency or a measure of dispersion.

A measure of central tendency is a parameter that tends to determine how close a data is to the center. These parameters are mean, median and mode

A measure of dispersion measures how spread a data set is from the mean. These parameters are standard deviation, variance e.t.c

6 0

3 years ago

raul works at a movie theatre. the function f(x) represents the amount of money raul earns per ticket, where x is the number of

leonid [27]

Question:

Raul works at a movie theatre. The function f(x) represents the amount of money Raul earns per ticket, where x is the number of tickets he sells. The function g(x) represents the number of tickets Raul sells per hour, where x is the number of hours he works. Show all work to find f(g(x)), and explain what f(g(x)) represents.

f(x) = 2x2 + 16

g of x equals the square root of the quantity 5 x cubed

Answer:

f(g(x))=

Step-by-step explanation:

Given:

f(x) = $2x^2 + 16$

g(x) = $\sqrt{(5x^3)}$

f(x) represents the amount of money Raul earns per ticket

x is the number of tickets he sells

g(x) represents the number of tickets Raul sells per hour

To find:

f(g(x)) = ?

Solution:

f(g(x)) represent the amount Raul earns by selling tickets for x hours

We know,

f(x) = $2x^2 + 16$

f(g(x)) = $2(\sqrt{(5x^3)} )^2 +16$

The square root and power 2 cancel each other

f(g(x)) = $2(5x^3 ) +16$

f(g(x)) = $10x^3 +16$

So at x hours

Raul earns $10x^3 +16$

For example lets assume Raul works for 5 hours, then the amount he earns will be

f(g(x)) = $10(5)^3 +16$

f(g(x)) = 10(125) +16

f(g(x)) = 1250 +16

f(g(x)) = 1266

You can also find the amount Raul earns by

g(x) = $\sqrt{(5(5)^3)}$

g(x) = $\sqrt{625}$

g(x) = 25

Substituting in f(x)

f(g(x)) = f(25)

f(25) = $2(25)^2 + 16$

f(25) = 2(625) +16

f(25) = 1250 + 16

f(25) = 1266

so Raul will be earning 1266 if he sells tickets for 5 hours

3 0

3 years ago

Please help me solve this I’m really struggling

Soloha48 [4]

Answer:

Step-by-step explanation:

I graphed this on my calculator to get the region of feasibility. You should learn how to use your calculator to help you do things like this. You should know by now how to graph by hand, which is tedious, so now it's time to use your calculator to sweat the small stuff and learn to do some useful things.

When you graph this inequality on your calculator, you can see the points of intersection which in turn translate to the vertices of the feasible region. They are located at:

(-14, -6), (-9, -11), (6, 4)

You could then use those vertices to maximize the profit equation or production equation or whatever it is this system pertains to.

3 0

3 years ago