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
dusya [7]
3 years ago
8

1. Which expression is equivalent to the expression below?

Mathematics
1 answer:
Nat2105 [25]3 years ago
8 0

Answer:

B. 48x - 56

Step-by-step explanation:

8(6x - 7) \\  = 8 \times 6x - 8 \times 7 \\  = 48x - 56

You might be interested in
Hello I don’t understand question 9 a and b. Please show working out.<br> Thanks
brilliants [131]
A) I would make the positive integer x and then form an equation.

x + 30 = x^2 - 12
x + 42 = x^2
0 = x^2 - x - 42 this can be factorised
(x - 7) ( x + 6) Therefore x = 7 or x = -6

Since the question asks for a positive integer the answer is 7.

B) two positive numbers x and y.

X - y = 3
x^2 + y^2 = 117

Use these simultaneous equations to figure out each number.

Rearrange the first equation

x = y + 3

Then substitute it into the second equation.

(y+3)^2 + y^2 = 117
y^2 + 6y + 9 + y^2 = 117
2y^2 + 6y - 108 = 0
then factorise this.
(2y - 12) (y + 9)

This means that y = 6 or y = -9 but it’s 6 because that’s the only positive number.

Use y to find x

x = y + 3
x = 6 + 3
x = 9

So the answers are x = 9 and y = 6.
3 0
3 years ago
The equation d= -6t + 10 represents the distance d, in miles, Ralph walks from the library to his house in t hours. His sister,
Artist 52 [7]
A: 2.5
Don’t know if I’m right
7 0
3 years ago
Multiply the following polynomials
Sophie [7]

Answer  (2x + 7) • (x2 - 2)

Step-by-step explanation:

please give me brainlest!!

Step by step solution :

Step  1  :

Trying to factor as a Difference of Squares :

1.1      Factoring:  x2-2

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =

        A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check : 2 is not a square !!

Ruling : Binomial can not be factored as the difference of two perfect squares.

Final result :

 (2x + 7) • (x2 - 2)

6 0
3 years ago
Read 2 more answers
Nicole is 56 inches tall and has an 84 inch shadow. Julie is standing next to Nicole and has a 96 inch shadow. How tall is Julie
Natalka [10]

Answer:

56+12=68.         68 inches

Step-by-step explanation:

julie‘s shadow is 12 inches taller than Nicole’ so you would just add 12 to 56.

7 0
3 years ago
Enter three different expressions that are equivalent to, but not exactly the same as 1/4 + 5/4​
choli [55]

Answer:

6/4 = 1 1/2  

1 2/4

12/8

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • How many vertices does a sphere have?
    6·1 answer
  • Which of the following statements is true?
    10·2 answers
  • What’s the equation
    6·1 answer
  • What are the next three terms of the arithmetic sequence -18, -13, -8, -3,…?
    5·1 answer
  • A courtyard is 40m long 24m wide and a paved path 3 m wide runs round the edge of its inside. find the area of thr path​
    5·1 answer
  • What is the BALANCE POINT for this set of data? Type the NUMBER ONLY. :)
    13·1 answer
  • I really need help with this!!
    13·2 answers
  • Solve the equation <br>4(2^m+1)-16^m=0​
    5·2 answers
  • Help pls :))))))))))))
    10·1 answer
  • Round to the ten millions place.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!