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faltersainse [42]
3 years ago
10

What is the value of the expression –5x4 when x = –2?

Mathematics
1 answer:
igomit [66]3 years ago
4 0
It is definitely c, 80
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Alessandra tried to fill the prism with unit cubes but did not have enough.
Bas_tet [7]

Answer

Answer is 120

Step-by-step explanation:

Multiply the length, width, and height to get the volume. Do 6x4x5 to get 120.

3 0
4 years ago
Read 2 more answers
Dward has four pearls – two white and two black – which he can distribute as he chooses between two identical bags. He must then
Annette [7]

Answer:

Answer is 3/4

Step-by-step explanation:

Edward can distrubute pearls to 2 identical bags as fallows:

  • 2W for one bag and 2B for another bag. In this scenerio the probability of picking a black pearl is 1/2.
  • 1W and 1B for one bag and 1W and 1B for another bag. In this situation the probability of picking a black pearl is 1/2 × 1/2 is equal to 1/4
  • At the end, the sum of two scenerio is 1/2 + 1/4 = 3/4
8 0
3 years ago
11) The sum of two numbers is 25. The difference of two numbers is 3.
kupik [55]

Answer:

11) 14 and 11

Step-by-step explanation:

i can't help in number 12 , sorry !

5 0
4 years ago
A comet travels along a parabolic path around the Sun. The Sun is the focus of the path. When the comet is at the vertex of the
AlladinOne [14]
Remember that for a function of the form y=a x^{2}, a parabola, the focus will be: (0, \frac{1}{4a} ).
We know that the vertex of the parabola is (0,0), and the sun is the focus of the parabola; we also know that the focus is in the positive y-axis and when the comet is as its vertex, the distance between them is 60'000.000 km; therefore the focus of our parabola is (0, 60'000.000).
Now that we know the focus, we can find a using the focus of the parabola:
\frac{1}{4a} =60'000.000
1=(60'000.000)(4a)
1=240'000.000a
a= \frac{1}{240'000.000}

Now, the only thing left is replacing the value of a in our equation y=a x^{2}:
y=( \frac{1}{240'000.000)} ) x^{2}
y= \frac{ x^{2} }{240'000.000}
 
We can conclude that the equation that represents the path of the comet is y= \frac{ x^{2} }{240'000.000}

5 0
3 years ago
Y = 2 ( x + 3 ) ( x - 4 )
Evgen [1.6K]
The answer would be y=3x+2 if we solved for y if we solved for x it would be x= y/3-2/3
5 0
3 years ago
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