MATHEMATICS HIGH SCHOOL

What is A−1?A=[1−29−24]

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What is A−1? A=[1−29−24] Enter your answer by filling in - 1

Answers

Answer 1
Answer:

Answer:

A^-1 =

[4        3/2]

[-1/3    -1/6]
Answer 2
Answer:

Answer: [ 4    , 3/2]

              [-1/3 , -1/6]

Step-by-step explanation: I did the test

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On august 1st, a plant was 79 centimeters tall. in june of that year it grew 12 centimeters, then 9 more centimeters in july. how many centimeters tall was it on june 1st?a.67b.70c.100d.5

a miner found three pieces of gold in an under ground mine in 1970 (in 1970 one ounce of gold cost 36.02$). The pieces weighed .080 ounce, .122 ounce, and .096 ounce. Find the total value of gold when it was mined.

Answers

The total value of the mined gold is $ 10.73. This is computed by summing up all the weights of 3 mined gold, 0.80 + 0.122 + 0.096, which will give us 0.298 ounce. Then this will be then multiply be 36.02, the cost of gold, which will give us $10.73.

The total value of gold when it was mined was $10.73.

In 1970, one ounce of gold cost $36.02. A miner found three pieces of gold in an underground mine in 1970.

The pieces weighed 0.080-ounce, 0.122 ounce, and 0.096 ounce. To find the total value of gold when it was mined, you need to multiply the weight of each piece of gold by the price per ounce in 1970 and add the results. To do so, let's find the value of each of the three pieces of gold: Value of first piece = 0.080 ounce × $36.02/ounce = $2.88Value of second piece = 0.122 ounce × $36.02/ounce = $4.39Value of third piece = 0.096 ounce × $36.02/ounce = $3.46Now, add up the value of all three pieces to find the total value of gold: $2.88 + $4.39 + $3.46 = $10.73

Therefore, the total value of gold when it was mined was $10.73.

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The slope of line m is 7/8. If n⊥m, what is the slope of line n? A) 7/8
B) 8/7
C) -7/8
D) -8/7

Answers

k:y=m_1x+b\nl:y=m_2x+c\n\nl\ \perp\ k\iff m_1m_2=-1
We have:
m_1=(7)/(8);\ m_2=?
Substitute:
(7)/(8)m_2=-1\ \ \ \ |\cdot(8)/(7)\n\nm_2=-(8)/(7)
Answer: D)
Hey there !

When two lines are perpendicular , the product of their slope is -1 ,

m1 × m2 = -1
7/8 × m2 = -1

m2 = -8/7 Ans.

Atlas Chemical Company wanted to keep its recruiting costs for the position of Chief Chemist to less than $100,000. The company spent $15,500 on advertising and $32,700 on interviewing expenses. They will pay 8% commission on selling the selected individual's home. What is the maximum selling price that Atlas would pay 8% commission on and stay within budget?

Answers

647,500 is my answer :33

Evaluate the numerical expression 2+(65+7) multiply 3=what

Answers

218 is the right answer
Your answer should be 218 because 65+7=72 then 72*3=216 then 216+2= 218
Hope i could help (:

A boy leaves on a bicycle trip at the rate of 8 mph. One hour later the father, realizing that his son forgot his camping gear, sets out by car. How fast must the father drive to overtake the boy in 15 minutes?

Answers

Speed of father is 40 mph

Given that;

Speed of boy on bicycle = 8 mph

Total time taken by father = 15 min = 0.25 hour

Find:

Speed of father

Computation:

Distance = Speed × Time

So,

Boy's cover distance = Father's cover distance

[(Speed of boy on bicycle)(Time taken by boy)] = [(Speed of father)(Time taken by father)]

[(8)(1 + 0.25)] = [(Speed of father)(0.25)]

[(8)(1.25)] = [(Speed of father)(0.25)]

Speed of father = 10 / 0.25

Speed of father = 40 mph

Learn more:

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  1st equation to find out how far boy will have traveled in 1hr 15 minutes:

8/1=x/1.25 (8 miles over 1 hour = x miles over 1.25 hours)
8(1.25) = 1(x)
10 = x

Now, divide 10 by .25 (15 minutes aka 1/4 hour) to get the speed father will have to drive.

10/.25 = x/1

x = 40 MPH

the ball reach after bouncing four time? how many bounces does it take for the ball to reach a height of less than one inch?

Answers


After the 'n'th bounce, the ball returns to a maximum height of

               (100) times (0.75)^n .

-- After 4 bounces, the maximum height is (100) (0.75)^4 = 31.64 inches.

-- To look for the maximum height of 1 inch,     (100) (0.75)^x = 1

Let's take the log of each side:    log(100) + x log(0.75) = 0

Subtract  log(100)  from each side:      x log(0.75) = -log(100)

Divide each side by  log(0.75) :            x  =  -log(100) / log(0.75).

log(100) = 2 .  So ...    x = -2 / log(0.75)  =  -2 / -0.124939  =  16.00785    

So the ball returns to a slim hair more than 1 inch high on the 16th bounce,
and returns to definitely less than 1 inch high on the 17th bounce.


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