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
Dafna11 [192]
3 years ago
11

(78 n + 42)^2, when n = 91

Mathematics
1 answer:
Sergio039 [100]3 years ago
7 0
So evaluate/subsitue
the equation becomes
(78 times 91+42)^2

pemdas
do what's inside the parenthasees first

start over
parenthasees
exponents
multiplication and division yes 78 times 91
addition  and subtraction so


78 times 91 is first
78 times 91=7098
addition
(7098+42)^2
(7140)^2

restart

parentasees simplified
exponents
7140^2=50,979,600
You might be interested in
The difference of the square of a number and 28 is equal to 3 times that number
Pepsi [2]

Answer:

- 4, 7

Step-by-step explanation:

Let the required number be x.

Therefore, according to the given condition:

{x}^{2}  - 28 = 3x \\  {x}^{2}  - 3x - 28 = 0 \\  {x}^{2}  - 7x + 4x - 28 = 0 \\ x(x - 7) + 4(x - 7) = 0 \\ (x - 7)(x + 4) = 0 \\ x - 7 = 0 \: or \: x + 4 = 0 \\ x = 7 \: or \: x =  - 4 \\

5 0
3 years ago
How do I get rid of the parenthesis in a problem
erica [24]

Answer:

you solve what is inside the parenthesis first to get rid of it, then its almost like you got rid of it.

8 0
3 years ago
Read 2 more answers
Quadrilateral ABCD has coordinates A(3,-5), B(5,-2), C(10,-4), D(8,-7). Quadrilateral is a
densk [106]

Answer:

Quadrilateral is another word for a shape with four sides.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Prove that the medians to the legs of an isosceles triangle are congruent.
Vilka [71]

Step-by-step explanation:

Let ABC be an isosceles triangle with sides AC and BC of equal length.                

We need to prove that the medians AD and BE are of equal length.

Consider the triangles ADC and BEC.

They have two congruent sides that include congruent angles.

Indeed, AC = BC by the condition, because the triangle ABC is isosceles.

Since the lateral sides AC and BC are of equal length, their halves EC

and DC are of equal length too: EC = DC.

Finally, the angle ECD is the common angle.

Thus, the triangles ADC and BEC are congruent, in accordance to the

postulate P1 (SAS) (see the lesson Congruence tests for triangles of the

topic Triangles in the section Geometry in this site).

Hence, the medians AD and BE are of equal length as the corresponding sides

of these triangles.

The proof is completed.

8 0
3 years ago
What does the line 6x+2y=8 look like
sdas [7]
To determine what the line looks like, simply change it to y = mx + b form. Then simply either make a table of values. And substitute any points into the equation and obtain points to plot on the graph. Or you can simply plot the graph by using the slope of the equation.

Y = 8 - 6x/2
Y = 4 - 3x
Y = -3x + 4.

This would be the rearranged equation.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Justin owns 6 different dress shirts, 3 different pairs of pants, and 5 different ties. How many distinct outfits, each consisti
    8·2 answers
  • Using complete sentences, define and compare radian measure to degree measure. In doing so, be sure to answer each of the follow
    6·1 answer
  • Using Distributive Property, what is the simplified answer to (6+9v)6 ?
    14·2 answers
  • Put the numbers 1.01, 10.01, 1.11, 1.011 in order from greatest to least?
    15·2 answers
  • Which none of the following is a solution of the system
    13·1 answer
  • If the FDIC charges Bank D 6.1 cents per 100 dollars insured, how much must Bank D pay to insure $7.3 million in
    10·1 answer
  • Find the exact value of the trigonometric function. sin(pi/6)=
    8·1 answer
  • Here are eight angles. Which of these angles are obtuse angles?
    12·1 answer
  • I need help to Find the value of x. Round to<br> the nearest tenth.
    5·1 answer
  • What is the rate of change for 1
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!