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Mariana [72]
3 years ago
5

Which describes a situation when an estimation is appropriate? A. Margo wants to buy a sweater for $15.98 and a pair of socks fo

r $1.98. She has $20. She wants to know if she has enough money to buy both. B. Margo buys a sweater for $15.98 and a pair of socks for $1.98. She gives the cashier $20. The cashier wants to know how much change to give Margo.
Mathematics
1 answer:
o-na [289]3 years ago
7 0
Yes she has enough money to buy both. 1.98+15.98=17.96 if you subtract that from 20 you get $2.04 back in change

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singh works at a restaurant where he is paid by the hour plus time and a half for his hours over 40. last week he worked four ho
padilas [110]

Answer:

$8.5 per hour

Step-by-step explanation:

Number of overtime hours = 4 hours

Since overtime starts after 40 hours, then the number of hours worked = 40 + 4 = 44 hours

Total amount earned = $391

Let Hourly pay = x

Overtime pay = 1 1/2x = 3/2x

Therefore ;

40x + (4*3/2x) = 391

40x + 6x = 391

46x = 391

x = 391 / 46

x = 8.5

Hourly pay = $8.5 per hour

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3 years ago
$800 principal earning 7%, compounded annually, after 4 years
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3 years ago
Researchers recorded the speed of ants on trails in their natural environments. The ants studied, Leptogenys processionalis, all
posledela

This question is Incomplete

Complete Question

Researchers recorded the speed of ants on trails in their natural environments. The ants studied, Leptogenys processionalis, all have the same body size in their adult phase, which made it easy to measure speeds in units of body lengths per second (bl/s). The researchers found that, when traffic is light and not congested, ant speeds vary roughly Normally, with mean 6.20 bl/s and standard deviation 1.58 bl/s. (a) What is the probability that an ant's speed in light traffic is faster than 5 bl/s? You may find Table B useful. (Enter your answer rounded to four decimal places.)

Answer:

0.7762

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ, where

x is the raw score

μ is the population mean

σ is the population standard deviation.

Population mean = 6.20 bl/s

Standard deviation = 1.58 bl/s.

x = 5 bl/s

z = 5 - 6.20/1.58

z = -0.75949

The probability that an ant's speed in light traffic is faster than 5 bl/s is P( x > 5)

Probability value from Z-Table:

P(x<5) = 0.22378

P(x>5) = 1 - P(x<5)

= 1 - 22378

= 0.77622

Approximately to 4 decimal places = 0.7762

The probability that an ant's speed in light traffic is faster than 5 bl/s is 0.7762

5 0
3 years ago
Write 6 2/3 as a improper fraction
kirill115 [55]
Hi, i think the answer 20/3 hope this helped :D
3 0
3 years ago
Read 2 more answers
ILL GIVE BRAINLIEST AND THANKS HELP
Elanso [62]

Answer:

iIm sorry dont report but i do not understand what im answering, but ill take the points thank you

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3 years ago
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