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marishachu [46]
3 years ago
7

Which value of x makes the two matrices inverses of each other?

Mathematics
1 answer:
den301095 [7]3 years ago
8 0

Answer:

A: -2

Step-by-step explanation:

TOOK THE TEST

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Complete the statement If x/7 = 5/3, then x+7/7 =?
lawyer [7]
Lets get started :)

\frac{x}{7} = \frac{5}{3}
We can cross multiply, to find the value of x
3x = 7 x 5
3x = 35
We have to divide by 3 on either sides to isolate x
\frac{3x}{3} =  \frac{35}{3}
3 and 3 cancels out

x = \frac{35}{3}

Then, x + \frac{7}{7}  ( 7 divided by 7 is 1)
\frac{35}{3} + 1   = \frac{38}{3}


6 0
3 years ago
Dao receives an employee discount on the purchase of a new automobile. The automobile that he is interested in has a sticker pri
ZanzabumX [31]

Answer: Dao will pay $ 15,219.2

Step-by-step explanation:

Hi, to answer this question we have to multiply the price of the automobile by the percentage discount in decimal form (divided 100)

18,560 (18/100) = 18,560 (0.18) = $ 3,340.8 (discount amount)

Finally, we have to subtract the discount amount to the automobile's price:

18,560- 3,340.8 =$ 15,219.2  

Dao will pay $ 15,219.2.

Feel free to ask for more if needed or if you did not understand something.

7 0
3 years ago
Read 2 more answers
Mauricio scored a total of 34.42 points in five gymnastic
Olegator [25]

Answer:

Mauricio's score for each event is 7.

Step-by-step explanation:

Mauricio scored a total of 34.42 points in five gymnastic  events.

We can round off his score as 35.

To find Mauricio's score for each event, divide total score and no of events as follows :

n=\dfrac{35}{5}\\\\=7

Hence, Mauricio's score for each event is 7.

3 0
3 years ago
A boat traveling upstream goes 84 kilometers in 7 hours. If the return trip takes only 3 hours, what is the speed (in kilometers
Hunter-Best [27]
Speed = Distance ÷ time 

Speed upstream = 84 ÷ 7 = 12 km/h

Speed downstream = 84 ÷ 3 = 28 km/h

Speed in still water = 1/2(28 + 12) = 20 km/h

Answer: 20 km/h
8 0
3 years ago
Explain how you could convert 152 cups into gallons.
Mila [183]

Answer: There are 16 cups in every gallon so we could divide 152 by 16 and get our number of gallons which would give us 9.63 or a little over 9 and a half gallons.

Step-by-step explanation:

4 0
3 years ago
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