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
lapo4ka [179]
3 years ago
10

What number must be added to the expression below to complete the square? X^2-7x

Mathematics
1 answer:
Yuki888 [10]3 years ago
3 0

Answer:

49/4

Step-by-step explanation:

x² -7x +(7/2)²=(x-7/2)²

x²-2x·7/2+ (7/2)²=(x²-7/2)²

(7/2)²=49/4

You might be interested in
I will give you 78 points if you can get this right
Andrews [41]

Answer:

2:1

Step-by-step explanation:

Since the sides doubled in length, the scale is 2 to 1.

6 0
3 years ago
Read 2 more answers
4/5 of a number is 32​
andrew11 [14]

Answer:

x = 40

Step-by-step explanation:

Step 1: Write out an equation

4/5(x) = 32

Step 2: Solve by dividing both sides by 4/5

x = 32/(4/5)

<em>Use KCF (Keep Change Flip) if you do not have a calc.</em>

x = 40

6 0
3 years ago
Read 2 more answers
SOMEONE PLEASE HELP ME OUT THIS IS DUE In 20 MINUTES (PICTURE)
notka56 [123]
9ths answer. 113.112 ~ 113.1
8 0
3 years ago
There are 37 paper clips in a box. Carmen places more paper clips in the box. Which equation models the total number of paper cl
Anon25 [30]
37+n=p because all your doing is putting the numbers into a problem with the correct signs.
7 0
3 years ago
Read 2 more answers
Solve the following inequality: 3-5x-x^2&gt;=0
Dennis_Churaev [7]

Answer:

-5/2+-1/2√37≤x≤-5/2+1/2√37

Step-by-step explanation:

Step 1: Find the critical points

-x^2-5x+3=0

For this equation: a=-1, b=-5, c=3

−1x^2+−5x+3=0

x=−b±√b2−4ac/2a

x=−(−5)±√(−5)2−4(−1)(3)/2(-1)

x=5±√37 /−2

x=-5/2+1/2√37

Step 2: Check intervals in between critical points

x≤-5/2+1/2 √37 (Doesn't work in original inequality)

-5/2+-1/2√37≤x≤-5/2+1/2√37 (Works in original inequality)

x≥-5/2+1/2 √37 (Doesn't work in original inequality)

5 0
3 years ago
Other questions:
  • Can someone help me with 12 and explain how and why that’s the answer?
    15·1 answer
  • The mathematical equation relating the independent variable to the expected value of the dependent variable; that is, e(y) = ?0
    5·1 answer
  • Which example of artificial selection is caused indirectly by human activity?
    14·1 answer
  • Please help me asap, and be sure of your answer
    12·1 answer
  • A sample is drawn from a well-shuffled deck of cards that contains 13 hearts, 13 clubs, 13 spades, and 13 diamonds. What is the
    8·1 answer
  • F(x) = 4x – 13<br> g(x) = 3x2 – 7x – 13<br> Find: f(g(x))
    7·1 answer
  • How many solutions does 3x+5=7x-20 have?
    8·1 answer
  • Solve for X:<br> X + 1-x/2 = x+3/4 - 2/3
    9·1 answer
  • E/P 14)The equation 2x²+ 4kx - 5k = 0, where k is a constant, has no real roots.
    12·1 answer
  • ¿como represento 2/3 en decimal?<br>​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!