1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
choli [55]
3 years ago
9

(3x)2 – 7y2, when x = 3 and y = 2

Mathematics
2 answers:
denis23 [38]3 years ago
4 0

3 \times 3 \times 2 - 7 \times 2 \times 2 \\ 18 - 28 \\  - 10

baherus [9]3 years ago
3 0

Answer:

115

Step-by-step explanation:

(3x)^2 – 7y^2

Plug in:

(3×3)^2 – 7×2^2

9^2 - 14^2

81 - 196

115

Hope this helped.

You might be interested in
2. Find the number of cubical
lys-0071 [83]

Answer:number of boxes = 60

Volume of box = side × side × side.

 = 3 × 3 × 3

= 27 cu. cm.

Volume of carton = length × breadth × height.

= 15 × 9 × 12

= 1620 cu. cm.

Number of boxes = Volume of carton/Volume of each box.

= 1620/27

= 60

Therefore, number of boxes = 60.

Step-by-step explanation:Volume of box = side × side × side.

 = 3 × 3 × 3

= 27 cu. cm.

Volume of carton = length × breadth × height.

= 15 × 9 × 12

= 1620 cu. cm.

Number of boxes = Volume of carton/Volume of each box.

= 1620/27

= 60

Therefore, number of boxes = 60.

3 0
3 years ago
Brian invests £7900 into his bank account.
DENIUS [597]

Step-by-step explanation:

1. use the equation

current amount X interest to the power of years

commpound interest is 2.3%

The starting value is £7900

So: £7900*1.023^5=£8851.26

Therefore, the answer is £8851.26 after 5 years of interest added

Hope this helps!!!

Have a nice day :)

7 0
3 years ago
I need to divide this equation:
Luba_88 [7]
1+7/11 = 11/11+7/11 = 18/11 2+1/2 = 4/2+1/2 = 5/2 (18/11)/(5/2) = (18/11)*(2/5) = 36/55
5 0
3 years ago
A farmer plants 5 carrot seeds every 3 inches. Which
Serga [27]

Answer: 84 inches

Step-by-step explanation: When we look at how many carrot seeds he plants every 3 inches we can see that he plants 5 every time. This is saying that every 3 inches he will place 5 carrot seeds. If he wants to plant 140 seeds, he will still be planting 5 seeds every 3 inches. This means that we need to multiply the 140 seeds by 3 inches and divide by 5 to get our answer. This is 420 / 5 which equals 84. I think that is how it is done I am very sure of it!()_()()-();)

7 0
3 years ago
If y varies directly as x , and y = 6 when x = 15, find y when x = 25 <br> .k = ______y = ______
viva [34]
At x = 25, y equals to 10.4.
6 0
3 years ago
Read 2 more answers
Other questions:
  • The area of a square is 4 square meters. How long is each side? Please show every step.
    10·2 answers
  • 3. A recent news article stated that only 17% of college students between the ages of 18 to 24 years old voted in the last presi
    7·1 answer
  • Evaluate the summation of 2 n plus 5, from n equals 1 to 12..
    8·1 answer
  • 18 + X over 4 = 7<br><br> What is X?
    5·1 answer
  • PLEASE HELP ASAP!!!!
    12·1 answer
  • Answer and question are shown in picture
    12·1 answer
  • What is the range of 39, 32, 48, 43, 25, 22, 43? Explain
    14·2 answers
  • Need some help with this question-<br> look at image for details :]
    13·1 answer
  • Which equation has the same value as 4 x 2/5?<br><br> big question, people!!
    14·2 answers
  • 1. find measure of A.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!