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kolezko [41]
3 years ago
14

Which of the following best describes the algebraic expression x/6-1?

Mathematics
1 answer:
labwork [276]3 years ago
4 0
The option which best describes the algebraic expression x/6-1 is the last one - D. A number divided by six minus one.
A and B would mean that 6 is above the line, and x below it, which is not the case. C would mean that under the line it says x - 6, and not the other way round, which is why D is the correct answer.
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F(x). = x3+2x2+9x+18 find all zeros and use synthetic division
prisoha [69]
F(x)= (x-2) (x2-9) = (x-2)(x-3)(x+3)
8 0
3 years ago
If y varies inversely with 2.5x, and y=5.6 and x=30, write an equation to represent this relationship
klasskru [66]
Let the constant of variation be c.
We are given that y varies inversely with 2.5x, this means that:
y = (c) / (2.5x)
This can be written as:
2.5xy = c

Now, we a re given that y = 5.6 at x = 30.
Substitute with these values in the equation to get the value of c as follows:
2.5xy = c
2.5(30)(5.6) = c
c = 420

Therefore, the equation that describes the relation is:
2.5xy = 420
3 0
4 years ago
A playground is in the shape of a square with each side equal to 109 yards. It has skating rinks in the shape of the quadrants o
I am Lyosha [343]

Answer:

radius = 30 yd , cost of cement = $7065

Step-by-step explanation:

First we will find the area of the circular sectors. From that we can find the cost of cement and their radius.

The area of the playground is ...

playground area = (109 yd)^2 = 11,881 yd^2

Then the area of the skating rinks is:

rink area = playground area - remaining field

rink area = 11,881 yd^2 - 9,055 yd^2 = 2,826 yd^2

Then the cost of cement for the rink area is ...

(2826 yd^2)($2.50 yd^2) = $7065

The four quarter-circle skating rinks add to a total area of a full circle. That area is given by ...

A = πr^2

Put the values in the formula:

2826 = 3.14r^2

Divide both sides by 3.14

900 = r^2

By taking square root at both sides we get,

30 = r

The radius of each quadrant is 30 yards....

6 0
3 years ago
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Lilit [14]

Answer:

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Step-by-step explanation:

5 0
3 years ago
Simplify.<br><br> x + (7 + 14x)
Aleks [24]
X + (7 + 14x) = 15x + 7

hope this helps
7 0
3 years ago
Read 2 more answers
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