3 years ago

Find the value of x for brainlieat

Mathematics

1 answer:

Xelga [282]3 years ago

6 0

Answer:

I can automatically eliminate B and D because those values are two high. My guess is C 6.2.

Step-by-step explanation:

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On Monday, 288 students went on a trip to the zoo. All 7 buses were filled and 8 students had to travel in cars. How many studen

olchik [2.2K]

Answer:

40 kids

Step-by-step explanation:

288 minus the 8 kids that had to hide in cars= 280. 280 divided by the seven busses is 40

8 0

3 years ago

What is the determinant of 15 18 154

IgorC [24]

Answer:

The determinant is 15.

Step-by-step explanation:

You need to calculate the determinant of the given matrix.

1. Subtract column 3 multiplied by 3 from column 1 (C1=C1−(3)C3):

$\left[\begin{array}{ccc}-25&-23&9\\0&3&1\\-5&5&3\end{array}\right]$

2. Subtract column 3 multiplied by 3 from column 2 (C2=C2−(3)C3):

$\left[\begin{array}{ccc}-25&-23&9\\0&0&1\\-5&-4&3\end{array}\right]$

3. Expand along the row 2: (See attached picture).

We get that the answer is 15. The determinant is 15.

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3 years ago

Given the rectangles perimeter, find the unknown side lengths.

Dominik [7]

The perimeter is just adding all the sides together.

a.) 180 = 40 + 40 + x + x

180 = 80 + 2x Subtract 80 on both sides

100 = 2x Take 1/2 of 100 to get x

x= 50cm

b.) 1000 = 150 + 150 + x + x

1000 = 300 + 2x Subtract 300 on both sides

700 = 2x Take 1/2 of 700 to get x

x = 350

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3 years ago

Joe bought a computer three years ago for $6570. He assumed the value of the computer would depreciate at a rate of 6 3\4% per m

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Answer:

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Step-by-step explanation:

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