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fredd [130]
3 years ago
7

Find the factored form of -14a-a^2=0

Mathematics
1 answer:
sveta [45]3 years ago
6 0

Answer:

-a (14 +a) =0

Step-by-step explanation:

-14a-a^2=0

Factor out  -a

-a (14 +a) =0

Using the zero product property

-a =0   14+a =0

a =0   a = -14

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On a piece of paper, graph y>x-1. Then determine which answer choice
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The graph that matches the given equation is y≥x-1 is Graph A.

Option: C.

<u>Step-by-step explanation:</u>

The given equation y≥x-1 is a linear inequality equation.

Graphing Linear Inequalities differs from graphing regular linear equations. That is it has certain rules to be followed to draw the graph.

  1. First, rearrange the equation as y in the left and other terms in the opposite side.
  2. Check for the line: y= , y≤ and y≥ comes with straight line where as y< and y> comes with a dotted line.
  3. Shading: If y> greater than or y≥ greater than or equal is present then the space above the line has to be shaded. If y< less than or y≤ less than or equal  is present then the space below the line has to be shaded.

For the given equation y≥x-1,

The line will be solid passing through (0,-1) and (3,2) since it has y≥. Also, the region above the line is shaded.

So the graph A is the graph that matches the equation y≥x-1.

8 0
3 years ago
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miss Akunina [59]
It’s easier to see and solve if you draw the picture
To find LD you need to subtract CD to CL
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5 0
3 years ago
The numbers of pages in the books in a library follow a normal distribution. If the mean number of pages is 180 and the standard
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3 years ago
Two quantities vary inversely. If the value of the first is 15 when the value of the second is 18, find the value of the second
vovikov84 [41]

Answer:

The value of second quantity is 27

Step-by-step explanation:

Inverse variation can be represented by the equation xy=k or y = \frac{k}{x} i.e,

y varies inversely as x , if there is some nonzero constant k such that, xy =k or y = \frac{k}{x} where  x≠0 and y≠0.

Given: Two quantities vary inversely.

Let x be the first quantity and y be the second quantity if they  vary inversely.

then, by definition of inverse variation;

y = \frac{k}{x}            .....[1]

Substitute the value of x=15 and y=18 to solve for k;

18= \frac{k}{15}

Multiply both sides by 15 we have;

15\times 18=15 \times \frac{k}{15}

Simplify:

k=270

now, find  the second quantity y using same method when x=10.

then;

after substituting the value of x=10 and k=270 in [1] ;

y = \frac{270}{10}

Simplify:

y= 27

Therefore, the second quantity value i.e,y = 27



7 0
3 years ago
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Use the line of best fit to predict the total amount of money earned in tips
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Answer:

So its C! Heart it if its explained well, thanks!

Step-by-step explanation:

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