Find the missing length indicated

Mathematics

2 answers:

Anna71 [15]3 years ago

6 0

Answer:

Step-by-step explanation:

192

Oduvanchick [21]3 years ago

5 0

Answer:

Step-by-step explanation:

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65% of what number is 39? 65% of what number is 39?

Oksanka [162]

Change 65% into a decimal by moving the decimal point two places to the left. Then multiply .65 by 39 to get Your answer = A. 25.35 :)

3 0

3 years ago

N is an integer s=1/2 n(n+1) prove that 8s + 1 is an odd square number

pychu [463]

$s=\frac{1}{2}n(n+1) \\ \\
8s+1=8 \times \frac{1}{2}n(n+1)+1=4n(n+1)+1=4n^2+4n+1=(2n+1)^2$

n is an integer, so 2n+1 is also an integer. 8s+1 is equal to the square of 2n+1, so it's a square number.

2n+1 is an odd integer for any value of n. The square of an odd integer is always an odd integer. Therefore 8s+1=(2n+1)² is odd.

8s+1 is an odd square number.

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2 years ago

mr . owns enough money to pay five workers in 12 days if he adds 5 where workers for how long to get paid them at the same rate

Hatshy [7]

5 10

12 x

Cross multiply = (10 × 12) / 5 = $\frac{120}{5}$ = 24 days

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3 years ago

the distance between Two Cities on a map is 4.125. find the actual distance if the scale on the map was 2 inches = 40 miles

atroni [7]

Answer:

85 miles.

Step-by-step explanation:

Lets begin by figuring out the number of miles in 4 inches. Since every 2 inches make 40 miles, we can figure out that there are 80 miles in 4 inches. To figure out that .125 part, we multiply 40 by .125, to get 5. We can add 80 plus 5 to get our grand total of 85 miles.

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3 years ago

At 5.45p.M .,lixin,khairul and Devil are at the starting point of a 1-km circular path. Lixin Takes 18 minutes to walk one round

sweet [91]

Answer:

$Meeting\ Time = 6:03\ pm$