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MissTica
3 years ago
7

Find the total surface area

Mathematics
1 answer:
Sindrei [870]3 years ago
5 0

Answer:

298 cm^2.

Step-by-step explanation:

There are 3 pairs of faces of equal area.

Area of top = 7 * 11.  So it's  2 * 7 * 11 = 154.

Area of a smaller side  = 7 * 4 so we have 2*28 = 56 .

Area of larger side = 4*11 so it's  2*44 = 88.

Total surface area = 154 + 56 + 88

= 298.

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You are making a new type of deodorant from two different mixtures the first mixture is 30% smell proof and the second mixture i
Readme [11.4K]

Answer:

600 L of 30% proof and 400 L of 80% proof is needed

Step-by-step explanation:

Let the amount of 30% smell proof be x while that of 80% smell proof is y

Then;

x + y = 1000 •••••(i)

Also;

30% of x + 80% of y = 50% of 1000

0.3x + 0.8y = 500 •••••(ii)

From i, x = 1000 - y

Put this into ii

0.3(1000-y) + 0.8y = 500

300 - 0.3y + 0.8y = 500

0.5y = 500-300

0.5y = 200

y = 200/0.5

y = 400 L

But x = 1000 - y

x = 1000 - 400 = 600 L

3 0
2 years ago
(2.8•10^8)(1.9•10^4)
Mekhanik [1.2K]

Answer: 5.32 × 10^12

Step-by-step explanation:

This is a question relating to indices. In indices, we add the power given for question relating to multiplication. Hence, this will be:

= (2.8•10^8)(1.9•10^4)

= (2.8 × 1.9) × 10^8+4

= 5.32 × 10^12

Therefore, the answer to the question will be 5.32 × 10^12.

5 0
2 years ago
One hundred ninety-two students were surveyed about their favorite kind of TV programs. The results are shown in the table. Whic
trapecia [35]

Answer:

Music was 25%

Step-by-step explanation:

5 0
2 years ago
755,082 rounded to the nearest 10,000
Tems11 [23]
760,000 is the answer
4 0
3 years ago
Read 2 more answers
Help. Really important!!
Lerok [7]

Answer:

First on is £12 cuz when the mile is 0, it starts with 12.

Second is £28 (I think)

6 0
3 years ago
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