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earnstyle [38]
2 years ago
6

Factorise 6x² -5x -21

Mathematics
1 answer:
Alex Ar [27]2 years ago
5 0
I think it’s this but I’m not sure

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What is the volume of grain that could completely fill this silo, rounded to the nearest whole number? Use 22 over 7 for pi. (4
saveliy_v [14]

Answer: 19,461\ ft^3

Step-by-step explanation:

The missing figure is attached.

The volume of grain that could completely fill this silo is the sum of the volume of the cylinder and the volume of the hemisphere.

By definition, the volume of a cylinder can be calculated with this formula:

V_c=\pi r^2h

Where "r" is the radius and "h" is the height.

In this case you know that:

r=6\ ft\\\\h=168\ ft

And the volume of a hemisphere can be found using the following formula:

V_h=\frac{2}{3} \pi r^3

Where "r" is the radius.

In this case:

r=6\ ft

Therefore, the volume of grain that could completely fill this silo, rounded to the nearest whole number, is:

V_{grain}=(\frac{22}{7})(6\ ft)^2 (168\ ft)+\frac{2}{3} (\frac{22}{7})(6\ ft)^3\\\\V_{grain}\approx19,461\ ft^3

3 0
2 years ago
Today the price of a Jeep is $25,000. In 1970, the price was $5,000. What's the price relative?
asambeis [7]

Solution:

we are given with

Today the price of a Jeep is $25,000. In 1970, the price was $5,000.

So we can write

The price of a Jeep, today = $25,000

The price of a Jeep,in 1970 = $ 5,000

Relative Price means price of a good relative to other. Its a ratio of the two goods times 100.

Price   \ \ relative =\frac{25000}{5000}*100\\ \\ \  Price   \ \ relative =5*100=500\\ \\

Hence the price relative is $500/-

6 0
2 years ago
Read 2 more answers
Devon purchased a new car valued at $16,000 that depreciated continuously at a rate of 35%. Its current value is $2,000. The equ
Phoenix [80]
The correct answer is A
6 0
2 years ago
the equation y equals 1/5x represents a proportional relationship. explain how you can tell the relationship is proportional fro
Allisa [31]
If the equation is in y = k*x form, then we have a direct proportional relationship between x and y. In this case, y = (1/5)*x is in the form y = k*x where k = 1/5. So this equation is proportional. The constant of proportionality is k = 1/5

In terms of a graph, you can tell if it has the following properties:
1) The graph goes through the origin (0,0) which is where the x and y axis cross
2) The graph is a straight line

You should find that graphing y = (1/5)x will satisfy both properties above, so that will visually confirm you have the right answer. The graph is shown in the attached image. The red line represents the graph of the equation. The red line goes through (0,0) and (5,1), which are point A and point B respectively.

8 0
2 years ago
Let's find 1/2 - 1/6. First, write the subtraction so the fractions have denominator . Then subtract. 1/2 - 1/6 = blank/6 - 1/6
SOVA2 [1]

Step-by-step explanation:

1/2 - 1/6 = 3/6 - 1/6 = 2/6

Hope this helps!!!

7 0
2 years ago
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