Juan says, "When you put together unequal groups, you can only add." Is he correct? Explain.

Mathematics

2 answers:

liubo4ka [24]3 years ago

7 0

Yes, Juan is correct only equal groups can be multiplied.

pickupchik [31]3 years ago

5 0

Consider two groups

A = {1,w,w²}, Identity element =1

And, B= {1,-1}Identity element =1

Both are forming groups with respect to multiplication.

The first group A has 3 elements and the second group B has 2 elements.

Do, you think can we add them.

How will you add them, there are three elements in group A and 2 elements in group B, giving no benefit.

No, we can't add them.

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Mashutka [201]

It’s the last one because 1/2 is way more then 2/5 so I think it would be 1/5<1/2 so the last one

6 0

3 years ago

HELP with part (b) will mark brainlest!!!!!

GREYUIT [131]

Answer is 2(x,y) —> (3x, 3y)

6 0

3 years ago

Read 2 more answers

PLS HELP!! WILL MAKE BRAINLIEST!!!!

poizon [28]

Answer:

(86.2,0) is the x-intercept.

Step-by-step explanation:

You can use the slope formula to figure this one out:

Just use two of the points on the table, any of them will work:

$(33,-22)\\(52,-33)$

$\frac{-22-33}{33-52} =\frac{-55}{-19}=\frac{55}{19}$

Now you have the slope of the equation, now using the y-intercept equation you can substitute the variables for point of the table and the new slope.:

$(71,-44)\\y=mx+b\\-44=\frac{55}{19} (71)+b$

Now just solve for b to get the y intercept:

$-44=\frac{55}{19}(71)+b\\-44= \frac{3905}{19} +b\\(-\frac{3905}{19})-44=\frac{3905}{19} +b(-\frac{3905}{19})\\ -\frac{4741}{19}=b$

Now you have the y-intercept so you just have to plug in 0 to the y spot and it will calculate the x-intercept.

$0=\frac{55}{19}x-\frac{4741}{19}\\(+\frac{4741}{19})0=\frac{55}{19}x-\frac{4741}{19}(+\frac{4741}{19})\\\\\frac{4741}{19}=\frac{55}{19}x\\\frac{\frac{4741}{19}}{\frac{55}{19} }= \frac{\frac{55}{19} x}{\frac{55}{19} } \\\frac{431}{5} =x\\or\\86.2=x$