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Ahat [919]
3 years ago
11

la1" title=" - \frac{7}{10} -( - \frac{4}{15} ) " alt=" - \frac{7}{10} -( - \frac{4}{15} ) " align="absmiddle" class="latex-formula">
​

Mathematics
1 answer:
Artist 52 [7]3 years ago
3 0
The answer is highlighted. You have to get rid of the parentheses and change the denominators to make them the same.

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1. How do you define quadratic equations?​
oksian1 [2.3K]

Answer:

ax^{2} +bx+c^{2}=0

Step-by-step explanation:

A quadratic equation is a equation that takes the form: ax^{2} +bx+c^{2} = 0

   Ex. Using our definition of quadratic equations, ax^{2} +bx+c^{2}=0,

          We can set a = 2, b = 1, c = 6:

               2x^{2} +x+6^{2}=0

               2x^{2} +x+36=0

          Which can then be solved (if you are trying to solve it) as:

               (2x+9)(x-8)=0

                x=\frac{9}{2}, 8

6 0
3 years ago
Y=8-2x when x=8 the value of y
Lera25 [3.4K]

Answer:

-8

Step-by-step explanation:

Given that x and y are two variables.  they are related by the function

y =8-2x

Since x and y are related, given one value we can find the other using this equation.

In our question, given that x =8

Substitute x value in the equation

y = 8-2x

y =8-2(8) = -8

Hence answer is -8:


Verify:  We verify by putting -8 for y and check whether x =8

-8=8-2x

Or 2x = 16

x =8

Verified

8 0
3 years ago
Read 2 more answers
Pls help me which one is it
hoa [83]

Answer:

c

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Selecting either a polygon or an area will sometimes reveal the area . True or false
aleksandr82 [10.1K]

Answer with explanation:

→A polygon is a simple closed curve. So , a closed curve occupies area.

⇒When we use the word area, it describes two dimensional closed geometrical object.It is not necessary that ,the shape is polygon only, it should be a simple closed curve.For,example, Circle, Combination of Part of curve and line segments, but it should be a closed curve.

⇒There are some open curves , which occupies area ,but the curve is not closed from both sides, so we can't predict it's area precisely.Therefore , open curves does not come into consideration when we use the word area.

Therefore, Here "Sometimes" word is used.

So, Yes ,Selecting either a polygon or an area will sometimes reveal the area

→True Statement

6 0
3 years ago
Lionel's front yard is in the shape of a square and has an area of 225 square meters
photoshop1234 [79]
One side of the square is 15 cause 15 times 15=225
3 0
3 years ago
Read 2 more answers
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