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FinnZ [79.3K]
3 years ago
10

Assume that children is an integer variable containing the number of children in a community and that families is an integer var

iable containing the number of families in the same community. Write an expression whose value is the floating point average number of children per family.
Mathematics
1 answer:
kherson [118]3 years ago
3 0

Answer:

Answered

Step-by-step explanation:

Children*1 d/ family

Integer division returns an integer value in most languages.

I am assuming "1d" is double precision 1, which turns the expression into floating point division, thus allowing an answer like 1.8.

it can also be written as

float(children)/float(family)

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Step-by-step explanation:

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3 years ago
Are they congruent? How do you know?
pogonyaev

Answer:

Yes, if you translate either plane, they will end up in the exact location.

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two positive integers are 3 units apart on a number line. their product is 180. wich equation can be used to solve for m, the gr
3241004551 [841]

Answer:

m^2-3m-180=0

m=15

Step-by-step explanation:

greater integer = m

small integer = n

we know that m = n+3 or n = m-3

we also know that n*m = 180

replace n for m-3

(m-3)*m=180

or

m^2-3m-180 = 0

(m-15)(m+12)=0

so m = 15 or -12, but since problem states positive, m=15

5 0
3 years ago
Adrian is planning to drive from City X to City Y. The scale drawing below shows the distance between the two cities with a scal
DochEvi [55]

Answer:

takes him 8.4 hrs

Step-by-step explanation:

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so distance is 252 miles

speed is 30mph so 252/30=8.4h

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4 0
2 years ago
Graph f(x)=x2 +2x-3 label x and y intercept and vertex with their coordinates and draw axis of symmetry
kenny6666 [7]

Answer:

f(x) = x² + 2x - 3  ..….equation1

The graph of function will be a parabola

Standard form of parabola:

y=ax²+bx+c

x-coordinate of the vertex can be found using

x = \frac{−b}{2a}

from equation 1 find values for a, b, and c.

a = 1, b = 2, c = -3    ⇒  x=−2/2(1) ⇒  x = -1

substitute the value of x into equation 1 for y-coordinate

f(-1) = (-1)² + 2(-1) – 3 ⇒ −4

vertex =(-1,−4)

Axis of symmetry = x = -1,  

Axis of symmetry is vertical and passes through the vertex with equation

x = -1

For x-intercept, put y = 0

x² + 2x - 3=0   ⇒   x² + 3x -x - 3=0     ⇒  x( x + 3 ) -1 ( x + 3 )  ⇒ ( x − 1 )( x + 3 ) = 0

equate each factor to zero and solve for x

x − 1 = 0  ⇒  x = 1,         x + 3 = 0  ⇒  x = -3

x-intercept = { 1, -3 }

For y-intercepts put x = 0

y = (0)² + 2(x) - 3

y = -3

y-intercept = ( 0 , -3 )

The points for the vertex, x-intercepts, and y-intercept and axis of symmetry are plotted on the graph.  

3 0
3 years ago
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