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3 years ago

Place decimal points in 34, 4, and 417 so that the sum of the three numbers is 7.97.

Mathematics

1 answer:

KIM [24]3 years ago

8 0

3.4+0.4+4.17=7.97 you just have to try different combinations of different numbers with the decimals.

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(2+0.4 + 0.6)² I have been stuck on this problem for a while

Anna11 [10]

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1 year ago

A customer works into a post office to purchase stamps. she purchases a total of 45 stamps. some of the stamps are 49cent stamps

baherus [9]

Step-by-step explanation:Let number of 49 cents =A

Let number of 33 cents=B

A+B=45 equation 1

1 $=100 cents

49 cents =.49 dollar

33 cents=.33 dollar

so .49A+.33B=17.89 equation 2

Add equation 1 and equation 2

since these are simultaneous equations

.49A+.33B=17.89

A+ B=45

so divide equation 2 by 100 we get

49A+33B=1789

A+B =45 multiply equation 1 by 33 on both the sides we get

33A+33B=1485 equation 3

so subtract equation 3 from equation 2 we get

49A+33B=1789 equation 2

33A+33B=1485 equation 3

16A+0 =304

16A=304

A=304/16

A=19

putting nalue of A in equation 1 we get

A+B=45

19+B=45

B=45-19

B=26

so number of 49 cent stamps are 19

and number of 33 cent stamps are 26

5 0

2 years ago

I need help!!! Can you figure this out?

Aneli [31]

Answer:

128 degrees

Step-by-step explanation:

38+90=128

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2 years ago

Researchers wanted to see which species of lizard (A, B, or C) is most likely to survive a bacterial infection. So they infected

Slav-nsk [51]

Answer:

A) attached below

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C) 0.47

Step-by-step explanation:

Given data:

Total number of lizards infected = 38

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For specie C one more survived than died

Out of the 24 lizards that died 1/3 were species A

A) contingency table

attached below

B) Determine the proportion of these lizards in this study that were either specie A or Specie B

P ( A or B ) = ( 8 + 15 ) / 38 = 0.605 ≈ 0.61

C) determine the probability that specie C lizard did not study

P ( not surviving | C ) = 7 / 15 = 0.466 ≈ 0.47

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2 years ago

Assume that the following events are independent: • probability that a randomly selected person has red hair is 0.14 • probabili

erastovalidia [21]

I think the answer is C.

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2 years ago

Read 2 more answers