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mina [271]
3 years ago
15

Which of the following is equivalent to the expression below?

Mathematics
1 answer:
PilotLPTM [1.2K]3 years ago
8 0

Answer:

C 9i

D -9i

Step-by-step explanation:

sqrt(-81)

sqrt(81) sqrt(-1)

we know that sqrt(-1) = i

±9i

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I need the equation and the answer please it’s due tonight
Greeley [361]

Answer:

The answer is 27.15

this is your equation to your answer step by step

4.40+ 3.25=

7.65

7.65+3.25=10.9

10.9+3.25=14.15

14.5+3.25=17.4

17.4+3.25=20.65

20.65+3.25=23.9

23.9+3.25=

6 0
3 years ago
The cost of 6one by two metere
Alik [6]

Answer:

Rs 17 3/4

Step-by-step explanation:

Cost of 6 1/2 m = 115 3/8

Cost of 1 m = x

  • x = 115 3/8 ÷ 6 1/2
  • x = (115*8 +3)/8 ÷ 13/2
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Cost of 1 meter is Rs 17 3/4

5 0
3 years ago
Find the slope and the y-intercept in this equation: 3y+6=-2x
Dmitry [639]
Hello,

To solve this problem, you should first put in it slope intercept form.

Here are the steps:

3y + 6 = -2x   Add 6 to both sides
3y = -2x - 6    Divide both sides by 3
y = (-2/3)x - 2

The you can see that the slope is (-2/3) and the y-intercept is (0, -2).

I hope this helps,
MrEQ
7 0
4 years ago
Read 2 more answers
I forgot to label the triangle below! I just know that the cos A = 0.48. Based on this information, which angle should be marked
lianna [129]

Answer:

angle 1

Step-by-step explanation:

Using the trigonometric mnemonic SOH CAH TOA, we know that cos or cosine is the ratio between the adjacent side and hypotenuse side.

This means that if cos A = 0.48, A is the measure of the angle which it's relative adjacent side divided by the hypotenuse of the triangle will be around 0.48.

Let's try angle 2, cos (angle 2) = adjacent / hypotenuse = 7.8 / 8.9 = 0.876404494382 ≈ 0.87 ≠ 0.48. Since the proportions are not equal, this angle cannot be the one marked as A.

Since angle 3 is a right angle, the adjacent could be either side so it cannot be correct. Thus angle 1 is correct.

5 0
3 years ago
30 POINTS NO TRICKS JUST 30 POINTS FOR YOU!!!!!!
algol [13]
Quartile 1 is 211. quartile 2 is 226 , and quartile 3 is 265.5
 
3 0
3 years ago
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