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Elena-2011 [213]
3 years ago
12

Someone please help me out

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
7 0

Answer:

Step-by-step explanation:

\sqrt{-100} =\sqrt{100*-1} =\sqrt{100 i^2} =5i=0+10 i

correction write 10 i in place of 5i

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Write the following quotient scientific notation 33x10 to the ninth power by 11x10 to the seventh power
zepelin [54]

Answer:

try 56

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10

Step-by-step explanation:

i feel that is the right awnser

6 0
2 years ago
A bacteria culture initially contains 100 cells and grows at a rate proportional to its size. After an hour the population has i
Assoli18 [71]

Step-by-step explanation:

Rate of growth equals 420/100 = 4.2 times per hour

So after t=three hours,

size of culture = 100*(4.2)^t = 100*4.2^3=7408.8 bacteria,

round to nearest unit 7409 bacteria after three hours (after initial size of 100).

8 0
3 years ago
Read 2 more answers
3. The surface area of the sphere is 30 m2. Find the radius of the sphere.​
pickupchik [31]

Answer:

Step-by-step explanation:

The formula for the surface area is A = 4πr².  This formula can be solved for r² and then the result solved for the radius, r:

         A

r² = --------     The radius of the sphere is as follows:

        4π

√(30 m²)

-------------- meters

     2√π

7 0
3 years ago
Find (5.2 x 10^7)(5 x 10^8)/(3.2 x 10^6)(5 x 10^5), expressed in scientific notation.
algol13

Answer:

A

Step-by-step explanation:

4 0
3 years ago
Find the lateral surface area of thiscylinder. Round to the nearest tenth.8ft4ftLSA = [ ? ] ft2—
Inessa05 [86]

Solution

Step 1:

Write the lateral surface area or curved surface area of a cylinder:

Lateral\text{ surface area = 2}\pi rh

Step 2:

Write the given data

Height h = 8ft

Radius r = 4 ft

Step 3:

Substitute in the formula to find the lateral surface area.

\begin{gathered} Lateral\text{ surface area = 2}\pi rh \\ =\text{ 2 }\times\text{ 3.142  }\times\text{  4  }\times\text{  8} \\ =\text{ 201.1 ft}^2 \end{gathered}

Final answer

201.1

8 0
1 year ago
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