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
Anon25 [30]
3 years ago
10

How can mental math help you find solutions to inequalities?

Mathematics
1 answer:
shepuryov [24]3 years ago
7 0

Answer:

There are many examples the basics are also easy to remember.

Step-by-step explanation:

We can input these for the following equation.

x > 5

(x is greater than 5)

Then compare to - x < 5

(minus x is less than 5)

We try a sum

3x -2 ≤ 1

we can then balance subtract -2

3x ≤ -1

then divide by 3

x= -1 /3

We try another value

3x -2 ≤ 0

1 ≤ 3x

1/3 ≥ x

We can check that each equality fits and alter the number accordingly.

For the first one we are saying it is no greater than 1

For the second we say it is greater than zero.

We are able to prove both have the answer.

Just like when we look for negative percentages and count down we record this as we count in mental math.

You might be interested in
I don't get why I missed c I know why I missed the table can someone help me with c
vodka [1.7K]
Your formula is right but you must have plugged it in wrong. Y= 1/10 x X is your distance, so plug in 85 with x Y= 1/10 85 One- tenth as a decimal equals 0.1. So 0.1 times 85 will equal 8.5
7 0
3 years ago
What is the solution to the system of equations?<br><br><br> x=4y+6<br> x-3y=4
dem82 [27]
\left \{ {{x=4y+6} \atop {x-3y=4}} \right. \\\\&#10;4y+6-3y=4\\\\&#10;y+6=4\ \ \ \ | subtract\ 6\\\\&#10;y=-2\\\\&#10;x=4y+6=4*(-2)+6=-8+6=-2
6 0
4 years ago
Read 2 more answers
Solve for xxx. Your answer must be simplified. 17x&gt;17
GalinKa [24]
Divide each side by 17 and you get x>1
8 0
3 years ago
Read 2 more answers
H(x)=17, x=?<br> H(x)=5x+2<br> I don't know how to find x?
Andreas93 [3]

Answer:

• If h(x) is 17, equate the whole function to 17

{ \tt{5x + 2 = 17}} \\  \\ { \tt{5x = 17 - 2}} \\  \\ { \tt{5x = 15}} \\  \\ { \boxed{ \tt{x = 3}}}

6 0
3 years ago
Read 2 more answers
Which table of values corresponds to the graph below?
Karolina [17]

The correct answer is the second answer choice.  It is the one that starts with (0,-2).

6 0
3 years ago
Read 2 more answers
Other questions:
  • five friends earn a total of 50$ doing yard work in your neighborhood.Each friend earns the same amount. Use the equation 5f=50.
    9·2 answers
  • How do you solve this equation 27s-29=54s-83
    11·1 answer
  • How many edges does a rectangular prism have?
    13·2 answers
  • How to solve this? Don't just give me the answer help me learn this.
    7·1 answer
  • SIMPLIFY THE<br> EXPRESSION<br> 3(x - 2) – 5x - 10
    14·2 answers
  • 3. Desde un punto del suelo se ve un pararrayos bajo un ángulo de 60°, si nos alejamos 3m, vemos el pararrayos con un ángulo de
    6·1 answer
  • Determine whether
    6·1 answer
  • What’s the slope of this equation
    5·1 answer
  • Expand 4(m + 4).<br> +<br> 4(m + 4) =<br> +<br> =<br> I need help asap.
    5·2 answers
  • Sundip and Emma have some money. The ratio of Sundip's money to Emma's money is 3:5. Emma spends £450 of her money. The ratio of
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!