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3 years ago

Solve (4)-6(9•-2) A.89 B.200 *C.122 D.97

Mathematics

1 answer:

Grace [21]3 years ago

4 0

You are correct C. is the answer.

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What is the circumference of a circle with radius pi?

vfiekz [6]

Answer:

2π² or 19.74

Step-by-step explanation:

Circumference of a circle is C = 2πr

Given r = π

Then:

C= 2π*π = 2π²

≈19.74

6 0

3 years ago

A teacher randomly assigns her 30 students 4-digit I.D. numbers using the digits 0 to 9. No digits are repeated within an ID num

Olin [163]

The number of ways 4 digit numbers can be forms using the digits 0 to 9 with no number repeated is given by

$^{10}P_4= \frac{10!}{(10-4)!} = \frac{10!}{6!} =10\times9\times8\times7=5,040$

The probability that one of the numbers is 9876 is given by $\frac{1}{5,040}$

7 0

3 years ago

Read 2 more answers

How exactly do i name the 4 ways?

Vladimir79 [104]

Well, basically there are

acute angle, right angle, obtuse angle ..

and also we use concurrent angles, corresponding angles, alternate angles, vertically opposite angles,..

..hope it helped a bit

5 0

3 years ago

Usain Bolt of Jamaica set a world record in 2009 for the 200- meter dash with a time of 19.19 seconds. What was his average spee

kirill [66]

Answer:

His average speed was of 10.42 m/s

Step-by-step explanation:

We use the following relation to solve this question:

$v = \frac{d}{t}$

In which v is the velocity(in m/s), d is the distance(in meters), and t is the time, in seconds.

Usain Bolt of Jamaica set a world record in 2009 for the 200- meter dash with a time of 19.19 seconds.

This means that $d = 200, t = 19.19$

So his average speed was of:

$v = \frac{d}{t} = \frac{200}{19.19} = 10.42$

His average speed was of 10.42 m/s

6 0

3 years ago

What is the value of the expression below? (3 1/2 - 9 3/4) ÷ (-2.5)

Alexandra [31]

Answer:

2.5

Step-by-step explanation:

3 1/2 - 9 3/4 =

3 2/4 - 9 3/4 = -6 1/4

-6 1/4 = -6.25 ÷ (-2.5) = 2.5

5 0

2 years ago