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Eva8 [605]
3 years ago
5

Just need to check these answers

Mathematics
1 answer:
amid [387]3 years ago
3 0
Great Job! they are all correct.  :)


Good luck in your next tests.
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Parabola 4x^2+24x-10
Andreas93 [3]

Answer:

What's the question?

Step-by-step explanation:

,....

6 0
2 years ago
Multiple choice: 
Paha777 [63]
In the given you wrote -2, whereas it should be -2i

z = a + bi and in trigo form | z |.(cos Ф + i.sin Ф).
z = 0 -2i → | z |.(cos Ф + i.sin Ф)
Now let's calculate z:
 
z² = a²+b² → z² = 0² (-2.i)² → z = -2(i)² →z= -2(-1) → z = |2|
tan Ф = b/a = -2/0 → tan Ф → - ∞ ↔ Ф = -90° or Ф = 270°
 then the - 2 I ↔ |2|(cos 270° + i.sin 270°)

7 0
3 years ago
The edges of a box are 4 cm, 6 cm and 8 cm. Find the length
qaws [65]

Answer:

Largest Face: 90 degree angle

Step-by-step explanation:

7 0
2 years ago
If the marginal propensity to consume is 0.9, what is the maximum amount that the equilibrium gross domestic product could chang
Katen [24]

Answer: There is change of $0.9 billion in government expenditures.

Step-by-step explanation:

Since we know that

Marginal propensity to consume tells that the rate at which there is change in consumption due to change in income.

According to our situation, MPC is the change in amount of gross domestic product due to change in government expenditure.

So, it becomes,

MPC=\dfrac{\text{Change in gross domestic product}}{\text{Change in government expenditure}}\\\\0.9=\dfrac{x}{1}\\\\x=0.9

Hence, there is change of $0.9 billion in government expenditures.

7 0
3 years ago
What is the mean median mode and range of the numbers 31 28 30 31 30 ...?
mamaluj [8]
1. Mean is the number you get when you add all these numbers and then divide by the number of numbers. So, (31 + 28 + 30 + 31 + 30) / 5 = 150 / 5 = 30
2. The median is the middle number in the list of numbers, so, the answer is 30 as well.
3. Mode is the number that appears most often, so here it is 30 and 31 because they both appear 2 times.
4. Range is the difference between the largest and smallest number, so 31 - 28 = 3. 
5 0
2 years ago
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