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AnnyKZ [126]
4 years ago
8

Pls explain the easiest way you an this will help me Thanks XD

Mathematics
1 answer:
Ostrovityanka [42]4 years ago
7 0
The ratio is 4:3:1
let the ratio be 4x:3x:x
according to the question,4x+3x+x=40
8x=40
x=5
therefore amount of gravel=x*4=5*4=20m^{3}
amount of sand=5*3=15m^{3}
amount of cement=5*1=5m^{3}
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10

Step-by-step explanation:

for E abs F its 2 possible. For the penny also two possible. And 6 for the spinner. Since you would count all the slices from the first two and add a 2 for the penny.

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PLEASE HELP ITS DUE TOMORROW <br> I DONT UNDERSTAND!!!!!
Rainbow [258]
  • Yes, the height, h(t) of a ball t seconds after it's dropped from the third floor of a building is a function.
  • No, table B is not a function because no function can have the same y-values (5) for different x-values (1 and 8).
  • Yes, table C is a function because it has different y-values for same x-values.
  • Yes, graph D is a function because it has different y-values for same x-values.

<h3>What is a function?</h3>

A function can be defined as a mathematical expression which is used to define and represent the relationship that exists between two or more variables.

<h3>The types of function.</h3>

In Mathematics, there are different types of functions and these include the following;

  • Periodic function
  • Inverse function
  • Modulus function
  • Signum function
  • Piece-wise defined function.
  • Logarithm function

For this exercise, we would indicate whether or not each of the above mathematical relation represents a function:

  • Yes, the height, h(t) of a ball t seconds after it's dropped from the third floor of a building is a function.
  • No, table B is not a function because no function can have the same y-values (5) for different x-values (1 and 8).
  • Yes, table C is a function because it has different y-values for same x-values.
  • Yes, graph D is a function because it has different y-values for same x-values.

In conclusion, we can infer and logically deduce that a function maps every x-value in a valid domain to a single y-value only.

Read more on domain here: brainly.com/question/17003159

#SPJ1

8 0
2 years ago
Please someone help me!!!!!!​
ella [17]

Answer:

see explanation

Step-by-step explanation:

Using the identity

cos2Θ = 1 - 2sin²Θ, then

1 - 2sin²(\frac{\pi }{4} - \frac{0}{2} )

= cos [2(\frac{\pi }{4} - \frac{0}{2} )]

= sos(\frac{\pi }{2} - Θ )

= cos\frac{\pi }{2}cosΘ + sin

= 0 × cosΘ + 1 × sinΘ

= 0 + sinΘ

= sinΘ = right side

3 0
3 years ago
Read 2 more answers
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