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
GREYUIT [131]
3 years ago
6

Could someone explain why (-4)² is equal to 16 but -4² is equal to -16​

Mathematics
2 answers:
erica [24]3 years ago
8 0

Answer:

It's all about the brackets.

Step-by-step explanation:

If we do (-4)^2, the brackets make it -4 x -4 and the two negatives make a positive of 16.

If we do -4^2, that means that the 4 is squared before putting the minus sign there so you have 4x4 = 16 then put the minus to get -16.

Hope this helps!

treviglaslibrary

Afina-wow [57]3 years ago
4 0

Answer:

4^2= 16

Step-by-step explanation:

This is because when you square something your are multiplying that number by itself. So in this case you must multiply 4 x 4 which is sixteen. Another example of this is 3^2 which is 9. In this case you must multiply 3 x 3 which is nine.

You might be interested in
I'm stuck on question 6 + (-20.5)
astraxan [27]

Answer:

-14.5

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
Vesna [10]

Answer:

150

Step-by-step explanation:

150+30=180 (180= straight line)

3 0
3 years ago
What are the roots of the quadratic function in the graph?
k0ka [10]
The answer would be B) -5, 3. The roots can be found where the graph crosses the x-axis, which on this graph is -5 and 3.
7 0
3 years ago
Determine whether the lines are parallel, intersect, or coincide y=-7x-+1 y=-7x-3
Diano4ka-milaya [45]

Answer:

Parallel

Step-by-step explanation:

7 0
3 years ago
What is the area of triangle DEF?
FrozenT [24]

Answer:

A=2\sqrt{14}\ units^2

Step-by-step explanation:

we know that

Heron's Formula is a method for calculating the area of a triangle when you know the lengths of all three sides.  

so

A=\sqrt{s(s-a)(s-b)(s-c)}

where

a, b and c are the length sides of triangle

s is the semi-perimeter of triangle

we have

a=5\ units,b=6\ units,c=3\ units

<em>Find the semi-perimeter s </em>

s=\frac{5+6+3}{2}=7\ units

Find the area of triangle

A=\sqrt{7(7-5)(7-6)(7-3)}

A=\sqrt{7(2)(1)(4)}

A=\sqrt{56}\ units^2

simplify

A=2\sqrt{14}\ units^2

3 0
2 years ago
Other questions:
  • What’s the number of cups in 7 pints in a equation
    12·1 answer
  • Stuck on this question.
    8·1 answer
  • Find the value of the d. 2d -5 = 17
    14·1 answer
  • Bruce drew a scale drawing of a house and its lot. The house's driveway, which is 17 feet
    11·1 answer
  • Help plz help ......​
    15·2 answers
  • Find the scale factor of trapezoid QRST if it’s dilated to Q’R’S’T’. Type your result in the empty box provided below. HELPP PLE
    15·1 answer
  • We are getting y=1/2x+1. Help!!!
    13·1 answer
  • Please help me with this geometry
    9·1 answer
  • What is the recursive formula for the sequence?
    6·1 answer
  • SOMEONE PLS HELP ME ASAP ON THESE QUESTIONS!!!!!!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!