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labwork [276]
4 years ago
15

Please help! Correct answer only, please! I need to finish this assignment this week. Determine the value of the following: A. B

. C. D.

Mathematics
1 answer:
11Alexandr11 [23.1K]4 years ago
4 0

Answer:

C

Step-by-step explanation:

Given

\left[\begin{array}{ccc}-2&3\\2&4\\\end{array}\right] + \left[\begin{array}{ccc}3&1\\-1&2\\\end{array}\right]

Add corresponding elements to obtain the sum, that is

= \left[\begin{array}{ccc}-2+3&3+1\\2-1&4+2\\\end{array}\right]

= \left[\begin{array}{ccc}1&4\\1&6\\\end{array}\right] → C

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A delivery company has 18 vehicles in its fleet.
Ilia_Sergeevich [38]

Answer: £1517.04

Step-by-step explanation:

The fuel expenses for the vans will be calculated as:

Vans:

Since the average distance travelled per day is 198km and the average distance travelled per litre is 9km, the van would use:

= 198/9

= 22 litres

Since there are 8 vans, they'll use:

= 22 × 8 = 176 liters

Trucks:

Since the average distance travelled per day is 620km and the average distance travelled per litre is 6.2km, the truck would use:

= 620/6.2

= 100

Since there are 10 trucks, they'll use:

= 100 × 10 = 1000 liters

The amount of liters for both the van and the truck will be:

= 176 liters + 1000 liters

= 1176 liters

The fuel cost will then be:

= 1176 × 1£1.29

= £1517.04

6 0
3 years ago
A loggerhead sea turtle decided to swim to grab some lunch! She swam 4 miles west and 3 miles south until she stopped and found
yKpoI14uk [10]

Answer:

5 miles

Step-by-step explanation:

The Pythagoras theorem : a² + b² = c²

where a = length = 4

b = base= 3

c = hypotenuse

4² + 3²

16 + 9 = 25

√25 = 5

6 0
3 years ago
Help Quickly Please!
uranmaximum [27]

Answer:

18

Step-by-step explanation:

turn 3/8 into a decimal, .375, then multiply by 48

7 0
3 years ago
Read 2 more answers
The population of san francisco is 750,000 in an area of 49 square miles. what is the population density in san francisco? expre
lara31 [8.8K]

For this case we have the following conversion factor:

1 mi ^ 2 = 640 acres

The population density is given by:

D = \frac{x}{y}

Where,

x: total number of people

y: total area

Substituting values we have:

D =\frac{750000}{49 * 640}

D = 23.9 \frac{people}{acre}

Rounding the nearest whole we have:

D = 24 \frac{people}{acre}

Answer:

The population density in San Francisco is:

D = 24 \frac{people}{acre}

5 0
4 years ago
What ratio is proportional 3/5
Andre45 [30]

answer for this question is 15 by 25 is proportional to 3 by 5

7 0
4 years ago
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