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Dafna11 [192]
2 years ago
6

Evaluate the determinant for the following matrix [3 -5 / 1 1]

Mathematics
1 answer:
Natalka [10]2 years ago
6 0

Answer:

<h2>A. -2</h2>

Step-by-step explanation:

\det\left[\begin{array}{ccc}a&b\\c&d\end{array}\right] =ad-bc\\\\\det\left[\begin{array}{ccc}3&-5\\1&1\end{array}\right] =(3)(1)+(-5)(1)=3-5=-2

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Box A contained 1.67 kg of flour. Box B contained 8600 g of flour. After same amount of
rjkz [21]

Answer:

The amount of flour added to each box was 0.64 kg

Step-by-step explanation:

Let

x ----> the amount of flour added to each box in kg

Remember that

1 kg=1,000 g

8,600 g=8,600/1,000=8.6 kg

we know that

The linear equation that represent this situation is

(8.6+x)=4(1.67+x)

Solve for x

8.6+x=6.68+4x

4x-x=8.6-6.68

3x=1.92

x=0.64 kg

3 0
3 years ago
80 POINTS HELP<br> 1. What is the value of x? Show all of your work.
AnnyKZ [126]

Answer:

x = 9cm

Step-by-step explanation:

This is a right triangle so we can use the Pythagorean theorem

a^2 + b^2 = c^2  where a and b are the legs and c is the hypotenuse

6^2 + x^2 = ( sqrt(117) ^2)

36 + x^2 = 117

Subtract 36 from each side

x^2 = 117 -36

x^2 = 81

Take the square root of each side

sqrt(x^2) = sqrt(81)

x = 9

6 0
3 years ago
Read 2 more answers
What is reciprocal of 3/10
algol13
To get  the reciprocal, simply flip the numerator and denominator. The reciprocal of 3/10 is 10/3.
7 0
3 years ago
How much is a 20% increase to $771?
Irina-Kira [14]

Answer:

$154.20

Step-by-step explanation:

To find a percent of a number, multiply the percent by the number.

20% of $771 =

= 20% * $771

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5 0
3 years ago
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16(6t-3)= 200 what does t=?
Lunna [17]

Answer:2.58

Step-by-step explanation:

5 0
2 years ago
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