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3 years ago

Determine which is the graph of the given function.

Mathematics

1 answer:

Karo-lina-s [1.5K]3 years ago

8 0

Answer:

The answer is the fourth graph

Step-by-step explanation:

f(x) = 2x + 5 ⇒ x < 0

Represented by line its slope is 3 and its y-intercept 5

f(x) = 5 ⇒ 0 ≤ x ≤ 10

Represented by horizontal line at y = 5 from x = 0 to x = 10 with black circle on the point because x = 10

f(x) = 2x - 10 ⇒ x > 10

Represented by line its slope is 2 and start from y = 10 at x = 10 with empty circle on the point because x ≠ 10

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Would any one know how to solve this arithmetic series on the number of magic squares created per order. n=order, A=integer, D=d

Svetradugi [14.3K]

Answer:

Step-by-step explanation:

7 0

2 years ago

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I need help with number 4

Nadusha1986 [10]

$\bf \begin{cases}
\quad3x+2y=-9\\
-10x+5y=-5
\end{cases}$

so hmm the idea behind the elimination, is to make the value atop or below, of either variable, the same but with a negative sign

so hmmm say... we'll eliminate "y"

so... let's see, we have 2y and 5y, both positive
what do we multiply 2y to get a negative -5y, that way, -5y +5y = 0 and poof it goes

well let's see, let's try "k" $\bf 2yk=-5y\implies k=-\cfrac{5y}{2y}\implies k=-\cfrac{5}{2}$

so.. if we multiply 2y by -5/2, we'll end up with -5y

well, let's multiply that first equation then by -5/2

$\bf \begin{array}{rllll}
3x+2y=-9&\qquad\times -\frac{5}{2}\implies &-\frac{15}{2}x-5y=\frac{45}{2}\\\\
-10x+5y=-5&\implies &-10x+5y=-5\\
&&---------\\
&&\frac{-35}{2}x+0\quad=\frac{35}{2}
\end{array}\\\\
-----------------------------\\\\
\cfrac{-35}{2}x=\cfrac{-35}{2}\implies \cfrac{-35x}{2}=\cfrac{-35}{2}\implies x=\cfrac{2}{-35}\cdot \cfrac{-35}{2}
\\\\\\
\boxed{x=1}$

so.. now we know x = 1.... so let's plug that in say hmmm 2nd equation

$\bf -10(1)+5y=-5\implies -10+5y=-5\implies 5y=5\implies\boxed{ y=1}$

3 0

3 years ago

Could anyone check me on this? Please correct me if I’m wrong,thank u :D

azamat

You are right the answer is A

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3 years ago

Please help me with this question

Arlecino [84]

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3 years ago

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Determine if the given side lengths could be used to form a unique triangle, many different triangles, or no triangles.

Artist 52 [7]

Answer:

c. no triangles

Step-by-step explanation:

11 + 8.2 = 19.2 < 20.2

sum of 2 side length should be larger than third side length

4 0

3 years ago