If A= (-4 -4 1) (1 4 7) (2 3 3) and B= (2 9 -9) (8 8 -2) (4 10 1), find -4A + 8B
If A= (-4 -4 1) (1 4 7) (2 3 - 1

Answers

Answer 1
Answer: C. Because (-4*-4) +(8*2)= 32 And c os the only one with it

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What is the missing number 7/8 + blank equals 1

Answers

The answer is 1/8
7/8+1/8=8/8 which equals 1

One type of insect is 0.0052 meter long. what is the length in scientific notation.

Answers

Here, we need to write the length of the insect in scientific notation.

The given length of the insect is 0.0052 meter

Now, to write 0.0052 meter in scientific notation we need to follow this:

Scientific notation always start with non-zero digit followed by a decimal point.

Since in our number the decimal is needed to be moved three places to the right to get the first non-zero digit.

The exponent of the 10 is -3.

10^(-3)=(1)/(1000) =0.001

Therefore, our number 0.0052 can be written as:

5.2 * 10^(-3)

Hence, the require scientific notation is 5.2 * 10^(-3).

two angles are supplementary. One of the angles has a measure of 60 degrees. What is the measure of the other angle?

Answers

Supplementary means the two angles add up to 180 degrees.
If one of them measures 60 degrees, then the other would be
180-60=120 degrees.

Answer:

120°

Step-by-step explanation:

An airline company is considering a new policy of booking as many as 354 persons on an airplane that can seat only 330. (Past studies have revealed that only 88% of the booked passengers actually arrive for the flight.) Estimate the probability that if the company books 354 persons, not enough seats will be available

Answers

Title:

See the explanation.

Step-by-step explanation:

It is given that, if 100 persons book their seats, then only 88 passengers come.

The probability of 1 passenger to come is (88)/(100) = 0.88.

There will not be enough seats only when, 331 or more than 331 passengers will come.

The probability of 1 passenger will not come is (1 - 0.88)= 0.12.

Out of 354 passengers the probability that n passengers will come is ^(354)C_n (0.88)^n (0.12)^(354 - n).

The required probability is ∑^(354)C_n (0.88)^n (0.12)^(354 - n), where 331\leq n \leq 354.

In this question, you have a large circle A with a radius of 6.5cm and a small circle B with radius 2.3cm. Calculate the area of the two circles. Once you have calculated the areas, take the area of circle A and subtract the area of Circle B and that will give you the area of the purple shaded region.

Answers

Answer:

116.113cm2 is the purple reigon area

Step-by-step explanation:

using pi r squared

1st circle area: 16.619

2nd circle area: 132.7322

1st - 2nd = 116.113 cm2

I'm having trouble with finding the solutions.

Answers

Answer:x=−8 and y=8

Step-by-step explanation: Do you want it solved step by step?

Answer:

One solution, (-8,8)

x = -8

y = 8

Step-by-step explanation:

-6x + 3y = 72    then 3y = 72 + 6x,      y = 24 + 2x

5x + 8y = 24

substitute for y:

5x + 8(24 + 2x) = 24

5x + 192 + 16x = 24

21x = -168

x = -8

y = 24 + 2(-8) = 8