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Strike441 [17]
3 years ago
5

Tammy estimated the product of 4.2 and 5.9, then calculated the exact product. Analyze her work and decide if she made an error.

Mathematics
2 answers:
nataly862011 [7]3 years ago
4 0

Answer:

C.Tammy’s estimate is right, but the actual product should be 24.78.

Step-by-step explanation:

i took the assessment! thank you for your attention and i hope i helped!!

Angelina_Jolie [31]3 years ago
4 0

Answer:

the answer is C which is Tammy’s estimate is right, but the actual product should be 24.78.

Step-by-step explanation:

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A solution of salt and water is 20% salt. If 25% of the water is removed, what is the percentage of salt in the new solution?
Ratling [72]
So lets say that this salt and water solution consists of 100 liters.

Then that means 20 liters is salt, and 80 liters out of the 100 is water.



Now, we remove 25% of the water. 25% of 80 liters is 20 liters. So, we are left with 80-20, or 60 liters.



Now in all we have 20 liters of salt, and 60 liters of water.

The percentage of salt in the new mixture will be 20/(20+60) = 20/80 = 25%.



Your answer is 25%
4 0
3 years ago
Movies at the rental store are $3.75 each. Snacks and drinks are $1.89 each. Round each amount to the nearest dollar to estimate
Troyanec [42]

The estimate the total cost to rent 3 movies and buy popcorn, a soda, and a candy bar is $18. option C

<h3>Total cost</h3>

This is the summation of all units cost of items or the results of adding all cost(fixed and variable)

Cost of movies = $3.75

= $4.00 to the nearest dollar

Cost of snacks (drinks, popcorn, candy bars) = $1.89 each

= $2.00 to the nearest dollar

Cost to rent 3 movies and buy popcorn, a soda, and a candy bar.

Total cost = (Cost of movies × number of movies) + cost of popcorn + cost of soda + cost of candy bar

= (4 × 3) + 2 + 2 + 2

= 12 + 2 + 2 + 2

= $18

Therefore, the estimate the total cost to rent 3 movies and buy popcorn, a soda, and a candy bar is $18. option C

Learn more about total cost:

brainly.com/question/2021001

#SPJ1

3 0
2 years ago
Estimate how much farther sound travels through stone in 17 seconds than through a aluminum in the same time
aev [14]

Sound travels 10200m farther through stone in 17 seconds than through aluminium

Speed of sound in aluminium =  3100 m/s

The speed of sound in stone = 3700 m/s

Time taken = 17 minutes

Distance traveled = Speed  x  Time

Distance traveled by sound in aluminium in 17 seconds  = 3100    x  17

Distance traveled by sound in aluminium in 17 seconds  = 52700 m

Distance traveled by sound in stone in 17 seconds =  3700   x  17

Distance traveled by sound in stone in 17 seconds =  62900 m

Difference in the distance traveled = 62900 - 52700

Difference in the distance traveled = 10200 m

Sound travels 10200m farther through stone in 17 seconds than through aluminium

Learn more here: brainly.com/question/13096122

6 0
3 years ago
Find the slope of the line that passes through (5, 4) and (3, 1).
marusya05 [52]

Step-by-step explanation:

slope = (4-1)÷(5-3)

=3/2

5 0
3 years ago
What is the rate of the discount on a automobile marked $20,000 but sold for $16,000?
Irina18 [472]

Answer:

Step-by-step explanation:

Use equation

20000-16000=4000

20000:100=4000 :x

x20000=400000

x=400000/20000

x=20 %

6 0
3 years ago
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