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
dalvyx [7]
3 years ago
9

What is mental math?

Mathematics
1 answer:
ryzh [129]3 years ago
3 0
Math you do in your head
example you can do 10 tiemes 3=30 in your head
that is mental math
you might have a hard time doig 19 times 23 so you would use a calulator then it would not be mental math
it's helpful if at the supermarket or at a resaurant

mental math is math done in the mind
You might be interested in
Jonathan pays $1.90 per pound for potatoes. He buys 8.3 pounds of potatoes. He determines that he will pay $15.77, before tax, f
tatuchka [14]

Answer:here is the right answer took the test and got it right trust and believe Jonathan’s answer is reasonable because is 16, and 16 is close to 15.77.

Step-by-step explanation:

7 0
3 years ago
The length of a rectangle is 10cm longer than its breadth the perimeter is 48cm determine the area of the rectangle​
damaskus [11]

Answer:

djdjkffk Friesland whether

5 0
3 years ago
Read 2 more answers
Hello please help! Solve for X.
scoray [572]

Answer:

-6

Step-by-step explanation:

Add 2x-15 to both sides to get 2x=-12 or x = -6.

4 0
3 years ago
Read 2 more answers
Which equation has solution x = -3? *
Alex73 [517]

Answer:

1/2(2x-6)= -6

Step-by-step explanation:

Multiply the two sides by the equation 2

2x-6=12

move the constant to the right hand side change sign

2x = -12 + 6

calculate the sum

2x= -6

Divide the 2 sides by 2

x= -3

8 0
3 years ago
For F(x)=2x+1 and G(x)=c^2-7 find (FxG)(x)
Ludmilka [50]

The value of F(G(x)) is 2x^2 - 13

<h3>How to solve the composite functions?</h3>

The functions are given as:

F(x)=2x+1

G(x)=x^2-7

To find (FxG)(x), we make use of

(FxG)(x) = F(G(x))

So, we have:

F(G(x))=2G(x)+1

Substitute G(x)=x^2-7

F(G(x))=2(x^2-7)+1

Expand

F(G(x))=2x^2 - 14 + 1

Evaluate the like terms

F(G(x))=2x^2 - 13

Hence, the value of F(G(x)) is 2x^2 - 13

Read more about composite functions at:

brainly.com/question/20379727

#SPJ1

4 0
2 years ago
Other questions:
  • 20% of all trucks undergoing a certain inspection will fail the inspection. Assume that 40 trucks are independently undergoing t
    14·2 answers
  • Starting at the same point at the same time, Samuel and Heather rode their bikes in the same direction. Samuel traveled 3km/h fa
    14·1 answer
  • Answer question please
    13·2 answers
  • I’d really appreciate some help :)
    8·1 answer
  • I think this is the last one ​
    6·1 answer
  • A rectangle's width is 23 cm and its length is 9cm. What is its area?
    15·1 answer
  • F(3) if f(x) = 2x+2 helpppppppppppppppppp
    7·1 answer
  • Who does e.d.e.n.u.i.t.y and needs help catching up?/ I'm free to help... only up to 8th grade though...
    11·1 answer
  • Which of the following represents the graph of the function f(x)=log3X+2
    13·1 answer
  • Find the point at which the line x = 5 − t, y = 2 + t, z = 3t intersects the plane x − y + 4z = 13.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!