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Art [367]
3 years ago
11

1-74. Read this lesson's Math Notes box about scaling axes. Then, on your paper, copy the incomplete

Mathematics
1 answer:
masha68 [24]3 years ago
8 0

The missing values in the scales given are :

  • 20; 40; 80
  • 15; 30; 45, 75
  • 25; 50; 75; 125
  • 50; 150; 200; 250

Each successive unit on a graph represent a specific value :

  • For the graph in (a)

The time in seconds represented by each unit:

  • Between 0 to 60 seconds ;
  • Number of units = 3
  • Number of seconds per unit = 60 / 3 = 20 seconds
  • Each unit represents 20 seconds
  • The missing units are : 20; 40; 80

For the graph in (b)

The time in seconds represented by each unit:

  • Between 0 to 60 seconds ;
  • Number of units = 4
  • Number of seconds per unit = 60/4= 15 seconds
  • Each unit represents 15 seconds
  • The missing units are : 15; 30; 45, 75

For the graph in (c)

The time in seconds represented by each unit:

  • Between 0 to 100 seconds ;
  • Number of units = 4
  • Number of seconds per unit = 100/4= 25 seconds
  • Each unit represents 25 seconds
  • The missing units are : 25; 50; 75; 125

For the graph in (b)

  • The time in seconds represented by each unit:
  • Between 0 to 100 seconds ;
  • Number of units = 2
  • Number of seconds per unit = 100/2 = 50 seconds
  • Each unit represents 50 seconds
  • The missing units are : 50; 150; 200; 250

Hence, the procedure for calculating units values of a graph.

Learn more :brainly.com/question/17386250?referrer=searchResults

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A company's stock begins the week with a price of $43.85 per share. THe price changes by +$2.70 each day for the first two days,
mixas84 [53]

Given:

Initial price of the stock=$43.85

Change for the first two days=+$2.70

Change for next two days=-$1.10

Last day=-$4.45

The objective is to find the price at the last day.

Let's take the price at final day as <em>x</em>.

\begin{gathered} x=43.85+2.70+2.70-1.10-1.10-4.45 \\ x=42.6 \end{gathered}

Hence, the price of the stock at the last day is $42.6

5 0
1 year ago
Venla is 5 years older than her cousin Kora. How old is Kora when Venla is 18 years old?
krek1111 [17]

Answer:

kora is 13

Step-by-step explanation:

venla is 5 years older than kora

18-5=13

5 0
3 years ago
Read 2 more answers
an elevator can carry 800 of weight. A football player weighting 280 pounds gets on the elevator with a student. Write and solve
Nesterboy [21]

Answer:

425\geq x

425 pounds or less can be added after the student and football player.

Step-by-step explanation:

let x = remaining weight

(note that >/= is greater than or equal to.)

800 - 280 - 95 >/= x

425 >/= x

8 0
2 years ago
What is the value of a in the equation 5a – 10b = 45, when b = 3?
LenKa [72]
5a - 10*3 = 45
5a - 30 = 45
5a = 45 + 30
5a = 75
a = 15
6 0
3 years ago
Read 2 more answers
What are the roots of this equation? x2-4x+9=0
zysi [14]

Considering the definition of zeros of a function, the zeros of the quadratic function f(x) = x² + 4x +9 do not exist.

<h3>Zeros of a function</h3>

The points where a polynomial function crosses the axis of the independent term (x) represent the so-called zeros of the function.

In summary, the roots or zeros of the quadratic function are those values ​​of x for which the expression is equal to 0. Graphically, the roots correspond to the abscissa of the points where the parabola intersects the x-axis.

In a quadratic function that has the form:

f(x)= ax² + bx + c

the zeros or roots are calculated by:

x1,x2=\frac{-b+-\sqrt{b^{2}-4ac } }{2a}

<h3>This case</h3>

The quadratic function is f(x) = x² + 4x +9

Being:

  • a= 1
  • b= 4
  • c= 9

the zeros or roots are calculated as:

x1=\frac{-4+\sqrt{4^{2}-4x1x9 } }{2x1}

x1=\frac{-4+\sqrt{16-36 } }{2x1}

x1=\frac{-4+\sqrt{-20 } }{2x1}

and

x2=\frac{-4-\sqrt{4^{2}-4x1x9 } }{2x1}

x2=\frac{-4-\sqrt{16-36 } }{2x1}

x2=\frac{-4-\sqrt{-20} }{2x1}

If the content of the root is negative, the root will have no solution within the set of real numbers. Then \sqrt{-20} has no solution.

Finally, the zeros of the quadratic function f(x) = x² + 4x +9 do not exist.

Learn more about the zeros of a quadratic function:

brainly.com/question/842305

brainly.com/question/14477557

#SPJ1

6 0
1 year ago
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