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
Charra [1.4K]
3 years ago
8

Decrease 18 tonnes by 30%

Mathematics
1 answer:
AVprozaik [17]3 years ago
5 0
18 t - 18 t * 30% = 18 t - 17 * 0,3 = 18 t - 5,4 t = 12,6 t
You might be interested in
Really struggling with this, can someone please help me out and give me a brief explanation? Id seriously appreciate it.
Bogdan [553]

Answer:

314 m²

Step-by-step explanation:

the surface area of a sphere (As) is

As = 4×pi×r²

our radius r (half of the diameter) here is 5m.

As = 4×3.14×5² = 4×3.14×25 = 100×3.14 = 314 m²

8 0
3 years ago
Find the LCD. Do not combine fractions.<br> 4<br> 1<br> X-9' x2 - 18x + 81<br> LCD =
olchik [2.2K]

Answer:

(x-9)^2

Step-by-step explanation:

8 0
2 years ago
Write a number in which value of the digit 3 is 10 times as much as the value of the digit 3 in 942381 show your thinking.
choli [55]

Answer:

943,281

Step-by-step explanation:

Just move the 3 up a value

If it's in the ten's place, then move it to the hundred's place value.

If it's in the hundred's place, then move it to thousand's place value.

So on and so on...

8 0
3 years ago
Read 2 more answers
Derivative of this function<br> <br>Y= -7X³ -8X² +6X +3
zaharov [31]

In general, the derivative of a single term  Ax^(n)  is  A n x^(n-1) .

And the derivative of a sum of many terms is the sum of the derivatives
of the individual terms.  

Using these two rules, the derivative (with respect to 'x') of the expression
in the question is . . .

<em>            Y' = -21x² - 16x + 6</em>


7 0
3 years ago
Solve the following system of equations:<br><br> x + 3y = −4<br> x + 5y = −6<br><br> pls and thx
Agata [3.3K]

Answer:

x = -1  y = -1

Step-by-step explanation:

x + 3y = −4

x + 5y = −6

Multiply the first equation by -1

-x - 3y = 4

The add to the second equation to eliminate x

-x - 3y = 4

x + 5y = −6

--------------------

 2y = -2

Divide by 2

2y/2 = -2/2

y = -1

Now solve for x

x+3y = -4

x +3(-1) = -4

x -3 = -4

Add 3 to each side

x-3+3 = -4+3

x = -1

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is 1/3 and 2/3 as decimals?
    8·2 answers
  • How do you write 4/10 as a decimal
    12·2 answers
  • 1. The 2010 census reported about 308.7 million people in the United States. The 2000 census reported a population of about 281.
    9·1 answer
  • The function f(x = 2x + 1 is defined over the interval [2, 5]. if the interval is divided into n equal parts, what is the value
    8·2 answers
  • There's 2 questions here that need to be answered.<br><br><br> Find the value of each variable.
    12·1 answer
  • Help!!!!! Will gib brainliest!
    10·1 answer
  • I need help how would i write an email for this-
    11·2 answers
  • Sarah buys 5 rulers and 4 pens work out how much she will pay give your answer in £
    10·1 answer
  • What is the end behavior of the graph of the polynomial function f(x) = 3x6 + 30x5 + 75x4?
    13·2 answers
  • Dimitri paid the same price for five different stocks. The table shows the change in the price of the stocks since he purchased
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!