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Luden [163]
3 years ago
8

10 POINTS PLEASE HELP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Which of the following is the correct notation for the complex number "√-81 - 4"?

-44+9i

14-9i

-14+i√9

-14+√-81
Mathematics
2 answers:
loris [4]3 years ago
8 0
I think its -44+9i if i am not right i am so sorry<span>
</span>
dexar [7]3 years ago
7 0

Answer

-14+9i is the correct answer hope this helps

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Kelly ran 6.2 miles Monday, 10.95 miles Wednesday, and 8.25 miles on Thursday. How many miles did she run in all?
RUDIKE [14]

Answer:

25.4 miles

Step-by-step explanation:

added them all up

but if i just wants miles than tha answer is 25

3 0
3 years ago
The bending of a bean varies directly as its mas. A beam is bent 20mm by a mass 0f 40kg. how much will the beam bend with a mass
Naddik [55]

Answer:

The beam will bend by 50 mm with a mass of 100kg?

Step-by-step explanation:

The first step in solving the problem of direct variation is setting up the relation mathematically.

We can do this as follows:

The bending of the beam varies directly as its mass.

20  \alpha  40kg

\alpha here is the symbol representing direct variation. To remove this and replace it with an equality sign, we have to introduce a constant of proportionality, k

20 = k \times 40

k = 20 /40 = 0.5

We can now use this to find the distance the beam will bend with a mass of 100kg?

This will be

Bending = 0.5 \times 100 =50mm

There fore, the beam will bend by 50 mm with a mass of 100kg?

6 0
3 years ago
Read 2 more answers
Maria would like to answer the question “How cold is it in January in New York?”
Rina8888 [55]
Statistics should be used because the temperature would vary during January and you would want to give an accurate answer.
8 0
2 years ago
What is the measure of AC?
Firlakuza [10]

Answer:

AC = 52.8

Step-by-step explanation:

33/20 = 1.65

12*1.65 = 19.8

BA = 19.8

CB + BA = AC

33 + 19.8 = 52.8

5 0
2 years ago
Read 2 more answers
Sam and Paul started a business. Their investments were in the ratio 6 : 7, respectively. How much did Paul invest if Sam's inve
salantis [7]

Answer:

$966

Step-by-step explanation:

6/7 =  828/x

Write a proportion.

6x = 7(828) Use cross products.

6x = 5796 Multiply.

x = 966 Divide both sides by 6.

Paul's investment was $966.

4 0
2 years ago
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