3 years ago

If a car travels 81

Mathematics

1 answer:

mario62 [17]3 years ago

7 0

Answer:

2.22222 hours

Step-by-step explanation:

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Express in scientific notation. 1.24 x 10^6/ 6.2 x 10^

Novay_Z [31]

Answer:

200000x 10x

Step-by-step explanation:

hope this helps

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2 years ago

Write an expression that is equal to 3 × 2 1/4

Vera_Pavlovna [14]

Convert the mixed number 2 1/4 into an improper fraction: 9/4.

Then multiply this 9/4 by 3: 27/4, or 6 3/4.

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3 years ago

Evaluate the numericial expression (32 - 20) ÷ 4

SashulF [63]

Answer:

Step-by-step explanation:

(32-20)÷4

solve perentisis first

(12)÷4

now divide

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2 years ago

Read 2 more answers

An unbiased coin is tossed 15 times. In how many ways can the coin land tails either exactly 8 times orexactly 5 times?

Kitty [74]

Answer:

Probability to get tails exactly 8 times or exactly 5 times is 0.29

Step-by-step explanation:

No of ways the coins lands tails exactly 8 times

P(8) = 15C8 × $0.5^{8}$ × $0.5^{15-8}$

No of ways the coin lands tails exactly 5 times

P(5) = 15C5 × $0.5^{5}$ × $0.5^{15-5}$

Probability to get tails exactly 8 times or 5 times

P(8)+P(5) = 15C8 × $0.5^{15}$ + 15C5 × $0.5^{15}$

P = $0.5^{15}$ ( 15C8 + 15C5 )

P = $0.5^{15}$ ( ( $\frac{15!}{8!(15-8)!}$ ) + ( $\frac{15!}{5!(15-5)!}$ ) )

P = $0.5^{15}$ ( 6435 + 3003 )

P = $0.5^{15}$ ( 9438)

P = $0.5^{14}$ ( 4719)

P = $\frac{4719}{16384}$

P = 0.29

8 0

3 years ago

You are attempting to make a scale drawing of your room. The actual size of your room is 12 feet

olga2289 [7]

Answer:

width = 8 inches

length = 10 inches

Step-by-step explanation:

width= 12/1.5

= 8

length = 15/1.5

= 10

6 0

3 years ago