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MAXImum [283]
3 years ago
7

Bob works at a construction company. He has an equally likely chance to be assigned

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
8 0

Answer:

7 <em>times.</em>

Step-by-step explanation:

We know that there are three buildings that he can be assigned to.

Since there are three buildings, the probability of each crew would be \frac{1}{3}.

If you set up the proportion, it would look like this.

\frac{1}{3} = \frac{x}{21}

The next step would be to solve for x.

3x =21

x=7

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Solve this equation<br> ×(2)-8×+7=0<br> Solve the equation
yKpoI14uk [10]

Answer:

-7/6

Step-by-step explanation:

2x-8x+7=0

combine like terms

6x+7=0

subtract the 7 from both sides

6x=-7

divide 6 from both sides

-7/6 or -1 and 2/3

7 0
3 years ago
Read 2 more answers
Pentagon ABCDE is graphed with the following vertices A(4,6), B(9,6), C(7,1), D(4,0), and E(1,3). What would point C' be after a
Artist 52 [7]

Answer:

(-7,1)

Step-by-step explanation:

over the y axis means the opposite way to the right or the left . the 7 will become -7 because on the other side the x-axis is made of negative numbers.

remember this to graph a number , it is like going in an elevator you have yo get in then go up or down.

7 0
3 years ago
Find an equation in standard form of the parabola passing through these points: (0,-6),(-1,-12),(3,0)
Elan Coil [88]
One form of the equation of a parabola is
y = ax² + bx + c

The curve passes through (0,-6), (-1,-12) and (3,0). Therefore
c = - 6                       (1)
a - b + c = -12            (2)
9a + 3b + c = 0         (3)

Substitute (1) into (2) and into (3).
a - b -6 = -12
a - b = -6                  (4)
9a + 3b - 6 = 0
9a + 3b = 6              (5)

Substitute a = b - 6 from (4) into (5).
9(b - 6) + 3b = 6
12b - 54 = 6
12b = 60
b = 5
a = b - 6 = -1

The equation is
y = -x² + 5x - 6 

Let us use completing the square to write the equation in standard form for a parabola.
y = -[x² - 5x] - 6
   = -[ (x - 2.5)² - 2.5²] - 6
   = -(x - 2.5)² + 6.25 - 6

y = -(x - 2.5)² + 0.25
This is the standdard form of the equation for the parabola.
The vertex us at (2.5, 0.25).
The axis of symmetry is x = 2.5
Because the leading coefficient is -1 (negative), the curve opens downward.
The graph is shown below.

Answer: y = -(x - 2.5)² + 0.25

3 0
3 years ago
4cm<br> 10cm<br> Base=<br> Height=<br> Area=
Anton [14]

Answer:

Step-by-step explanation:

If you're talking about a square, then the area would be 40.

If you're talking about a triangle, then the area would be 20.

8 0
3 years ago
When adding and subtracting numbers do you add and subtract the denominator​
NNADVOKAT [17]

Answer:

No, you don't.

Step-by-step explanation:

The denominator only changes if you're multiplying/dividing. You may need to create an <em>equivalent fraction</em> to add the fractions together, but you <em>don't</em> add or subtract the denominator.

Hope this helps! Have a great day!

4 0
3 years ago
Read 2 more answers
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