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tiny-mole [99]
2 years ago
10

If 4x + 3y = 5 is a true equation, what would be the value of 4(4x + 3y)? ​

Mathematics
1 answer:
stepan [7]2 years ago
3 0

Answer:

20

Step-by-step explanation:

4x + 3y = 5

We want to find 4(4x + 3y)

Replace (4x + 3y) in the expression with 5

4(5)

20

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In order to estimate the mean amount of time computer users spend on the internet each​ month, how many computer users must be s
levacccp [35]

Answer:

1877 computer users

Step-by-step explanation:

We have that for 95% of confident, the value of z has a value of 1.96 (attached table about it), they also mention the margin of error (E) that is 10 and finally the standard deviation (sd) that has a value of 221.

We apply the following formula:

n = [z * sd / E] ^ 2

replacing:

n = [1.96 * 221/10] ^ 2

n = 1876.27

that is, the minimum sample size is 1877

7 0
3 years ago
You earn three dollars an hour as a waitress after working three hours you earn 12 five and seven dollars in tips how much money
NikAS [45]

Answer:

The waitress earned a total of 33 dollars

Step-by-step explanation:

Step 1: Determine total earnings from wages;

Total earnings from wages=Earnings per hour×number of hours worked

where;

Earnings per hour=3 dollars an hour

Number of hours worked=3 hours

replacing;

Total earnings from wages=(3×3)=9 dollars

Step 2: Determine total earnings from tips

Total earnings from tips=(12+5+7)=24 dollars

Step 3: Calculate total money earned

Total money earned=Total earnings from tips+total earnings from wages

where;

Total earnings from tips=24 dollars

Total earnings from wages=9 dollars

replacing;

Total money earned=(9+24)=33 dollars

The waitress earned a total of 33 dollars

7 0
3 years ago
FedEx will ship the Olympic medals from the producer to Japan. Each medal weighs 0.5 kilograms. A box carries 6 medals. If FedEx
kherson [118]

Answer:

42

Step-by-step explanation:

weight of medals:

30 (0,5) = 15 kg

cost of 5 kg:

28/2 = 14

cost of shipping:

14+28=42

6 0
3 years ago
5. Evaluate<br><br> 10+ (4 23 + 7) - 19<br> A. 30<br> B. 33<br> C. 47<br> D. 45
Lyrx [107]

Answer:

10+ (4 23 + 7) - 19

I don't know if the 4 is supposed to be multiple or subtract or to add but If it is add

4 0
3 years ago
Find the approximate value of 2.49 and 2.98 when they are cubed​
Karo-lina-s [1.5K]

\huge\fbox\orange{S} \huge\fbox\red{C}\huge\fbox\blue{R}\huge\fbox\green{O}\huge\fbox\gray{L}\huge\fbox\purple{L>}

\huge\underline\mathtt\colorbox{cyan}{2.49 cubed=15.438249}

\huge\underline\mathtt\colorbox{red}{2.98 cubed=26.463592}

6 0
3 years ago
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