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lara31 [8.8K]
3 years ago
13

HELP I NEED HELP ASAP

Mathematics
2 answers:
Nonamiya [84]3 years ago
5 0

Answer:

number 5 is D

and number 6 is C

shepuryov [24]3 years ago
4 0

I) what percentage of students finished the race in less than 12 seconds:

number of students who finished before 12 seconds= 16

total number of students= 20

% = (16×100)20 = 80%

ii) B.3

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What is the product of z1 and z2 if
MaRussiya [10]

Answer:

308[cos(45) + isin(45)]

Step-by-step explanation:

z1×z2:

Modulus: r1 × r2

= 7×44 = 308

Argument: theta1 + theta2

= -70 + 115 = 45

z1z2 = 308[cos(45) + isin(45)]

Or

z1z2 = 154sqrt(2) + (i)154sqrt(2)

sqrt: square root

8 0
4 years ago
Suppose the diameter of a circle is 6 units What is its circumference?
Kipish [7]

Answer:

18.84 estimated, 6π exactly

Step-by-step explanation:

Hi!

<u>The formula for finding the circumference of a circle is 2πr:</u>

In that case, all we need to do <em>first </em>is to divide the diameter by 2, so we can substitute that into the equation.

6 ÷ 2 = 3

So we have 2π × 3 to solve.

2π × 3 = 6π

We can estimate the circumference by multiplying by 3.14.

6 × 3.14 = 18.84

(actually multiplying by π gives 18.849... which is pretty close!)

Thus, the circumference is \boxed{6\pi{\text{\:or\:18.84\:roughly}}}.

Hope this helps!

6 0
3 years ago
What is the perimeter of the figure?
Likurg_2 [28]
All the sides add like a rectangle with two sides measuring 4 and two measuring 2 so you would add 4+4+2+2=12
4 0
4 years ago
Read 2 more answers
The perimeter of a square is 20. Find the length of the diagonal
klemol [59]

Answer:

d≈7.07

Step-by-step explanation:

Using the formulas

P=4a

d= \sqrt{2} a

Solving ford  

d= \sqrt{2} P/4=2·20 /4≈7.07107

8 0
3 years ago
Read 2 more answers
Write in expanded form 72.864
Sergeeva-Olga [200]

Answer:

70 + 5 + 8/10 + 6/100 + 4/1000

Or

7*10 + 5*1 + 8*1/10 + 6*1/100 + 4*1/1000

5 0
3 years ago
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