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4 years ago

13

a scuba diver uses negative number to represent her depths below sea level.she was at a depth of -1.5 meters .then she dove down

to a depth of -4.2 meters.what is the difference between those depths ?

1 answer:

jonny [76]4 years ago

3 0

Answer:

bajo bajo usarlo barbo

Step-by-step explanation:

Ivonne pedile dulce música gusta debo Ceci full veo ja app el me dió la

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Can someone help me please

malfutka [58]

Answer:

x=9 since 2x9=18 and 18-8=10

3 0

3 years ago

18X - 15+13X - 11+4x + 1=180 <br> what’s x?

bezimeni [28]

Answer: x equals forty one over five

Step-by-step explanation: Add the numbers 18x-15+3x-11+4x+1=180 18x-25+3x+4x=180 then you combine like terms and you get, 18x-25+3x+4x=180 25x-25=180 then you add 5 to both sides of the equation 25x-25=180. 25x-25+25=180+25 then you simplify then you add the numbers 25x=205 then you divide both sides of the equation by the same term 25x=205 25x/25 = 205/25 then you simplify, you cancel terms that are in both the numerator and denominator then you divide the numbers and you get, x equals forty one over five.

3 0

3 years ago

In a study, 42% of adults questions reported that their health was excellent. A researcher wishes to study the health of people

Vikki [24]

Answer: 0.0594

Step-by-step explanation:

Given : The population proportion of adults questions reported that their health was excellent : p = 0.42

Among the 14 adults randomly selected from this area, only 3 reported that their health was excellent.

i.e. Sample size : n= 14

$\mu=np = 14\times0.42=5.88$

$s=\sqrt{np(1-p)}=\sqrt{14(0.42)(1-0.42)}\approx1.85$

z-score : $z=\dfrac{{x}-\mu}{\sigma}$

Put x= 3

$z=\dfrac{3-5.88}{1.85}\approx-1.56$

Then, the probability that only 3 or fewer report having excellent health:-

$P(z\leq-1.56)=0.0593799\approx0.0594$

Hence, the required probability : 0.0594

8 0

3 years ago

Simplify two b to the power of negative 3?

Serhud [2]

2/b^3 is your answer

3 0

3 years ago

Darcy uses place value blocks to show a number. she uses 4 thousands blocks and 5 hundreds blocks. what's the number? how can sh

xxMikexx [17]

The answer to this question is 4,500

6 0

3 years ago