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Sveta_85 [38]
3 years ago
8

9. YOU BE THE TEACHER Your friend

Mathematics
1 answer:
Crank3 years ago
8 0

Answer:

Step-by-step explanation:

Yes, it's reasonable.

What you are doing is solving the question by rounding. You come up with an answer. Suppose you loose the decimal somewhere and you get 0.36? Is that reasonable? Do you just write the answer in the provided blank and move on. What now?

You get it wrong?!!

But your estimate should be about 9/3 = 3. Now you look at your calculator with great misgivings, because it made a mistake. Did it or did you? Well ultimately you did, but you have to blame something. So the calculator takes the heat.

Who  knows? Maybe the decimal doesn't work. It's stuck or something. In any event you should be aware that there's no way the answer could be 0.36 when you estimate it to be 3.

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Which equation has a graph that is a parabola with a vertex at (–2, 0)?
MaRussiya [10]

Answer:

The vertex of a quadratic equation corresponds to the point where the maximum or minimum value is located.

If the function has a positive leading coefficient, the vertex corresponds to the minimum value.

If it has a negative leading coefficient,  the vertex corresponds to the maximum valuevalue

If the vertex is located at

(–2, 0)

The possibilities are

y =  (x-2)^2

or,

y = - (x-2)^2

Since the problem tells us the answer, we adopt the positive values

Answer:

y =  (x-2)^2

See attached picture

6 0
3 years ago
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The goal of the fundraiser to make than $150
Sergio039 [100]

Answer:

Step-by-step explanation:

Making more than $150

Let the amount to be made be x.

Then: x+$150 will be the amount needed to be made

7 0
3 years ago
Please help me with this problem. Seriously desperate again !!
Vedmedyk [2.9K]

Answer: 17 inches by 7 inches

Step-by-step explanation:

119 = 1 x 119 & 7 x 17

7 x 17 is the more likely answer, so let's test it

7 x 2 + 3 = 17

Therefore, the dimensions are 17 by 7.

5 0
2 years ago
While mining, Nancy found a Large metal bar that contain 12 g of copper. Nancy also determined that the bar was 80% copper. What
Snezhnost [94]

Answer:

  15 grams

Step-by-step explanation:

If the copper made up 80% of the weight of the bar (w), then the bar weighed ...

  0.80w = 12 g

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_____

Copper has a density of about 8.96 g/cm³, so Nancy's "large" metal bar is about the size of two sugar cubes.

5 0
3 years ago
Is X and Y in direct proportion? If so, how?
Schach [20]

Answer:

No

Step-by-step explanation:

For X and Y to be in proportion, The values should both be the same so if x is 10 y is 10 and so on.

5 0
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