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fredd [130]
3 years ago
13

If a cubic foot of stone weighs 150 lb and a cubic foot of iron weighs 480 lb, what fraction of the second weight is the first o

ne?
Mathematics
2 answers:
iris [78.8K]3 years ago
8 0

Answer:

72,000

Step-by-step explanation:

AVprozaik [17]3 years ago
5 0

this should help you

mark me brainliest

just press the blue link

Download pdf
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Given:• PQRS is a rectangle.• mZ1 = 50°Р21SRWhat is mZ2?130°85°70°65°
Over [174]

To answer this question, we need to recall that: "the diagonals of a rectangle bisect each other"

Thus, if we assign the point of intersection of the two diagonals in the rectangle as point O, we can say that the triangle OQR is an "isosceles triangle". Note that this is because the lengths OR and OQ are equal since we know that: "the diagonals of a rectangle bisect each other". See the below diagram for clarity.

Now, we have to recall that:

- the base angles of any isosceles triangle are equal. This is a fact, and this means that the angles

- also the sum of all the angles in any triangle is 180 degrees

Now, considering the isosceles triangle OQR, we have that:

\angle OQR+\angle ORQ+\angle ROQ=180^o

Now, since the figure already shows that angle m\angle2+\angle ORQ+50^o=180^oNow, since we have established that the base angles m\angle2+m\angle2+50^o=180^owe can now solve the above equation for m<2 as follows:

\begin{gathered} m\angle2+m\angle2+50^o=180^o \\ \Rightarrow2m\angle2+50^o=180^o \\ \Rightarrow2m\angle2=180^o-50^o \\ \Rightarrow2m\angle2=130^o \\ \Rightarrow m\angle2=\frac{130^o}{2}=65^o \end{gathered}

Therefore, the correct answer is: option D

7 0
1 year ago
An adjustable ladder on the back of the firetruck is needed for firefighters to climb to very high buildings. The maximum angle
torisob [31]
Cos 70 = horizontal distance /
 100 horizontal distance = 100 cos 70  = 32.2feet
3 0
2 years ago
What is the 2nd term when −3f3 + 9f + 6f4 − 2f2 is arranged in descending order?
Brilliant_brown [7]

For this case we have the following polynomial:

-3f ^ 3 + 9f + 6f ^ 4 - 2f ^ 2

To answer the question, what we must do is rewrite the polynomial in its standard form.

We have then that the polynomial will be given by:

6f ^ 4 - 3f ^ 3 - 2f ^ 2 + 9f

Therefore, we have the ordered polynomial in descending form of exponents.

Therefore, the second term of the polynomial is:

- 3f ^ 3

Answer:

The second term of the polynomial is given by:

- 3f ^ 3

6 0
3 years ago
mr abu bought a microwave oven,a digital camera and a television set for $3130. The microwave oven cost $100 less than the digit
AveGali [126]
Sorry if it is messy but if you dont understand feel free to ask .

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3 years ago
Simplify −2(2h+10)+4h
Anuta_ua [19.1K]
First distribute: -4h - 20 + 4h
Combine like terms: -20
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