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
viktelen [127]
2 years ago
9

An equation and the first step in its solution are shown: Equation: x2 + 8x - 9 = 0

Mathematics
1 answer:
Novay_Z [31]2 years ago
3 0
Answer- A-16

Because when doing completing the square, you divide the coefficient of x by 2, which is 4, and the square it which is 16
You might be interested in
Anyone else like the book call me by your name and what’s your favorites character
tangare [24]

Answer:

Love it. My favorite character is probably Elio.

8 0
2 years ago
Read 2 more answers
Please help me with the 3rd question!!! I'll give you 91 points now, please.
saw5 [17]

Answer:

At the end of the day 797 lockers were closed.

Step-by-step explanation:

So first of all you need to find out how many even numbers there are from 1-900 (which is 450) so you know that 450 are open. In the 3 multiplication tables every second number is even so you know that half of the 450 lockers that was opened was closed again: this meant that 225 lockers remained open.

You also know that every number in the 4 multiplication tables is the second number in the 2 multiplication tables so half of them are closed but you also know that the 900th locker was opened so now you have 113.

So to conclude you do 900-113 which gives you 797 (this is because 113 is the amount of lockers that is open)

3 0
3 years ago
1/2 + (103 1/2 + 12)
butalik [34]

Answer:

<h2>116</h2>

Step-by-step explanation:

103 1/2 + 12 = 115 1/2

1/2 + 115 1/2 = 116.

6 0
3 years ago
The perimeter of a rectangle is 254 cm. Its length is 55 cm. What is the width of the rectangle with a variable?
Elanso [62]

Answer:

Rectangle w=72

Step-by-step explanation:

Rectangle

Solve for 

width

w

=

72

cm

l

Length

cm

P

Perimeter

cm

5 0
3 years ago
(2x – y) + (2x + y) ???//
Svetach [21]

Answer:

4x is the answer

Step-by-step explanation:

2x - y  + 2x + y \\ 4x

4 0
2 years ago
Read 2 more answers
Other questions:
  • Write the expression as a single logarithm 7log(x) y + 6 log(b) x
    8·1 answer
  • If f(x) = 2(x)^2+5 sqrt (x-2). complete the following statement. <br><br> f(2)=_____
    10·2 answers
  • Someone help me please thanks
    10·1 answer
  • Polygon ABCDE rotates 52º about the origin to create polygon
    13·1 answer
  • You randomly select one card from a​ 52-card deck. Find the probability of selecting a black six or a black eight.
    6·1 answer
  • Hi can i calculate difficult maths question
    9·1 answer
  • There are fifty people in line for tickets to the Royal Rumble. Each time a fan buys a ticket, you skip two places in line. How
    15·1 answer
  • To find the quotient of two fractions, you first need to rewrite the division problem as an equivalent multiplication problem. F
    6·1 answer
  • Find the missing side of each triangle. Round your answers to the nearest tenth if necessary.
    13·2 answers
  • There are 25 students in Ms. Nguyen's second-grade class. In the class election, 4 students voted for Benjamin, 12 voted for Sah
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!