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elena-s [515]
3 years ago
15

Can someone please help me? question is in the picture.

Mathematics
2 answers:
In-s [12.5K]3 years ago
7 0
I believe it’s B
Your trying to find the area of the triangle of the two numbers of that makes any kind of sense
brilliants [131]3 years ago
4 0
A: x=10
Using the 3-4-5 rule the lengths would be 6-8-10 meaning the hypotenuse is 10 :)
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The expressions below model different possibilities for the area of a pool. Identify which of the following expressions have at
Anna007 [38]
<h3>Answer: Choice B is correct</h3>

========================================================

Explanation:

Use a graphing tool like GeoGebra, Desmos, or your graphing calculator to plot each expression given as a separate y equation. Four parabolas should result.

The x intercept is the same as the root or zero of a function.

You should find that only choice B has a root thats larger than 4. That specific root being x = 7.

----------------------------

A non-graphing approach:

You can use the quadratic formula or the factoring method to find the roots.

For choice A, it factors to (x+5)(x+6) = 0. The roots are x = -5 and x = -6 which aren't greater than 4. So we cross choice A off the list. Choices C and D are similar stories.

On the other hand, choice B factors to (x-7)(x+2) = 0 and it has roots of x = 7  and x = -2. This is another way to see why choice B is the answer.

Here are the steps for the quadratic formula for choice B

x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-(-5)\pm\sqrt{(-5)^2-4(1)(-14)}}{2(1)}\\\\x = \frac{5\pm\sqrt{81}}{2}\\\\x = \frac{5\pm9}{2}\\\\x = \frac{5+9}{2} \ \text{ or } \ x = \frac{5-9}{2}\\\\x = \frac{14}{2} \ \text{ or } \ x = \frac{-4}{2}\\\\x = 7 \ \text{ or } \ x = -2\\\\

The quadratic formula is handy in case factoring is either not possible, or guess-and-check is too lengthy of a process. As you can probably tell, we could use the quadratic formula's results to help construct the factored form.

8 0
3 years ago
Tiffany plans to use $275 she earned from a summer job to buy some new clothes for school. She found several items she likes but
Airida [17]
The total cost without tax would be $261, sales tax would be $15.66, if we add them together the answer would be $276.66
3 0
3 years ago
Read 2 more answers
Run is the ______ change in a line from one point to another.
Akimi4 [234]

Answer:

horizontal

Step-by-step explanation:

Rise over Run

Rise is up, or vertical and Run is across, or horizontal.

4 0
3 years ago
The Farm Agency is to use only the letters A, B, and C to make tags. Let y be the number of tags they can make using n spaces. W
UNO [17]

Answer:

y=3^{n}

Step-by-step explanation:

There are three letters A, B, C in order to make the tags and y is the number of tags that can be made using n spaces. So, there are three choices for the first letter A and three choices for the remaining two letters that are B and C respectively.

By the basic counting principle,

Formulae for the number of tags they can make using n spaces is: 3×3×3×3×..........×3( n times)

=3^{n}

Therefore, y=3^{n}


7 0
4 years ago
Read 2 more answers
Please help with this problem
aleksley [76]

Your answer would be 19 and 20.

To solve this, you need to first think about perfect square numbers, and which ones are the closest to 375. This is because perfect squares will always get square rooted back to a whole number, so therefore the ones around 375 would be the closest whole numbers.

Now, 400 is one of the easier to remember square numbers. It is 20 squared. 375 is pretty close to 400, however its slightly lower. So now, let's look at the closest perfect square that's less than 400: 19^2, or 361.

375 is between 361 and 400, so therefore it is between the square root of 361 and 400, or 19 and 20.

Good luck!

3 0
4 years ago
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