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musickatia [10]
3 years ago
14

Janet was asked to use the distributive property. She noticed she was marked wrong but does not know what step she did incorrect

ly. What step was not done correctly for 2 * 4.79?
Step 1: Decompose decimal: 4 + .7 + .09

Step 2: Place in equation 2(4 + .7 + .09)

Step 3: Multiply 2(4) + .7 + .09= 8

Step 4: Answer: 2(4.79)= 9.58

Step 1
Step 2
Step 3
Step 4
Mathematics
1 answer:
kenny6666 [7]3 years ago
7 0

Answer:

You distribute the 2 to all numbers in the 3rd step

Step-by-step explanation:

DISTRIBUTION: you must distribute the outside number to all the inside numbers in the parentheses.

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A training field is formed by joining a rectangle and two semicircles, as shown below. The rectangle is 96m long and 74m wide.
Oduvanchick [21]

Answer:

11402.66 m^{2}

Step-by-step explanation:

The width of rectangle is the diameter of the semi-circle part

Area of one semicircle is given by \frac {0.5\pi d^{2}}{4}

Total area of semi circle will be 2\times\frac {0.5\pi d^{2}}{4}

Substituting 74 m for d and \pi as 3.14 we obtain

Total area semi-circle=2\times\frac {0.5*3.14\times 74^{2}}{4}=4298.66 m^{2}

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3 years ago
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goldenfox [79]

Answer:

False

Step-by-step explanation:

A nonlinear function that can be written on the standard form

ax2+bx+c,wherea≠0

is called a quadratic function.

All quadratic functions has a U-shaped graph called a parabola. The parent quadratic function is

y=x2

picture51

The lowest or the highest point on a parabola is called the vertex. The vertex has the x-coordinate

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a > 0                   parabola opens up                    minimum value

picture52

a < 0                    parabola opens down              maximum value

picture53

A rule of thumb reminds us that when we have a positive symbol before x2 we get a happy expression on the graph and a negative symbol renders a sad expression.

The vertical line that passes through the vertex and divides the parabola in two is called the axis of symmetry. The axis of symmetry has the equation

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picture54

When you want to graph a quadratic function you begin by making a table of values for some values of your function and then plot those values in a coordinate plane and draw a smooth curve through the points.

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Graph

x=x2+2x+1

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x y = x2 + 2x + 1

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-2 1

-1 0

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picture55

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