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
amm1812
2 years ago
9

4. Match these equation balancing steps with the description of what was done in each step.

Mathematics
1 answer:
Archy [21]2 years ago
6 0

Answer:

step 1 - C.

step 2 - A.

step 3 - B.

You might be interested in
Find the simplified form of the expression. Give your answer in scientific notation. (4 x 10^10)(9 x 10^5) 3.6 x 10^4 3.6 x 10^4
mezya [45]
It's simple arithmetic.  The Answer is 604661760000000000000000000000000000000000000000000000000000000000000000000000000000 and in scientific notation
60466176 x 10⁸³
4 0
3 years ago
How many and what type of solutions does the equation have?
Natali [406]
Let's solve the equation 2k^2 = 9 + 3k
First, subtract each side by (9+3k) to get 0 on the right side of the equation
2k^2 = 9 + 3k
2k^2 - (9+3k) = 9+3k - (9+3k)
2k^2 - 9 - 3k = 9 + 3k - 9 - 3k
2k^2 - 3k - 9 = 0

As you see, we got a quadratic equation of general form ax^2 + bx + c, in which a = 2, b= -3, and c = -9.
Δ = b^2 - 4ac
Δ = (-3)^2 - 4 (2)(-9)
Δ<u /> = 9 + 72
Δ<u /> = 81

Δ<u />>0 so the equation got 2 real solutions:
k = (-b + √Δ)/2a = (-(-3) + √<u />81) / 2*2 = (3+9)/4 = 12/4 = 3
AND
k = (-b -√Δ)/2a = (-(-3) - √<u />81)/2*2 = (3-9)/4 = -6/4 = -3/2

So the solutions to 2k^2 = 9+3k are k=3 and k=-3/2

A rational number is either an integer number, or a decimal number that got a definitive number of digits after the decimal point.

3 is an integer number, so it's rational.
-3/2 = -1.5, and -1.5 got a definitive number of digit after the decimal point, so it's rational.

So 2k^2 = 9 + 3k have two rational solutions (Option B).

Hope this Helps! :)
7 0
3 years ago
Read 2 more answers
Find . negative square root of 16<br> −4<br> 4<br> ±4<br> −8
Luda [366]

Answer:-4


Step-by-step explanation: the square root is 4, so reverse in to negative, and the answer is -4.


4 0
3 years ago
Read 2 more answers
if the lake is 60 miles away and im driving 40 miles per hour how long will it take to get to the lake
suter [353]
It will take one hour and thirty minutes.
4 0
3 years ago
Read 2 more answers
Let f(x) = -2x - 7 and g(x) = -4x + 6. Find (f o g)(-5)
vladimir2022 [97]
It’s probably-67 on the top of my head
6 0
3 years ago
Other questions:
  • Draw an angle for each measurement
    12·1 answer
  • John had 28 color pencils. He was given a new set of colour pencils which contained twice as much he already had. Jonh gave 11 c
    14·2 answers
  • I need someone to save me this is so hard
    14·1 answer
  • Two cars leave the park at the same time opposite directions one goes 3 times faster after 6 hours they travel 140miles how fast
    15·1 answer
  • if 1343243253254353462534543254324534234542345134 times 23423543254353454325234543543543254365645654654 minus 454235435435425243
    11·1 answer
  • Which phrase describes the variable expression z+ 8?
    15·1 answer
  • Which is the solution set of a for -3(-x+a) 7&lt;5 when x=-1 ?
    8·1 answer
  • A net force of 66 N accelerates a child at 2.0m/s 2 down a smooth playground slide what is the mass of the child?
    14·2 answers
  • Factor this expression. Select the correct answer from each drop-down menu.
    14·2 answers
  • Odette made this jewelry box by combining two rectangular boxes.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!