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
Orlov [11]
3 years ago
7

The square of a negative number is twenty-eight more than three times the negative number. Find the number.

Mathematics
2 answers:
MAXImum [283]3 years ago
8 0
The number is x

it is negative
the square is 28 more than 3 times itself
x²=28+3x
minus (28+3x)
x²-3x-28=0
factor
(x-7)(x+4)=0
set to zero

x-7=0
x=7
this is not the answer because we were told the number was negative


x+4=0
x=-4
correct

the number is -4
test
(-4)²=28+3(-4)
16=28-12
16=16
check


the number is -4
Pani-rosa [81]3 years ago
4 0
-4 that's the end result
You might be interested in
Pythagorean Theorem with Known Legs
7nadin3 [17]

c {}^{2}  = 7 {}^{2}  + 9 {}^{2} \\ c {}^{2}  = 49 + 81 \\ c {}^{2}  = 130 \\ c =  \sqrt{130}

<h2>Answer</h2>

<h2> 130</h2>
3 0
2 years ago
A dog buried 18 bones in his backyard. On Monday, he dug up 1/2 of his bones. On Tuesday, he dug up another 1/3 of his bones. Ho
Korolek [52]

Answer:

3

Step-by-step explanation:

A dog buried 18 bones

On Monday he dug up 1/2 of the bones

On Tuesday he dug up 1/3 of the bones

= 1/2 × 18

= 9

= 1/3×18

= 6

Therefore the remaining bones still buried in the ground can be calculated as follows

= 9+6

= 15

= 18-15

= 3

Hence 3 bones are still buried in the ground

5 0
2 years ago
Y - 5 = 3/2(x+2) using that for a fraction write an equation in sloped intercept form
Licemer1 [7]
In slope intercept form this is equal to y=3/2x+8. If you want it in decimal form it would be y=1.5x+8.
8 0
3 years ago
ANSWER IT PLZ! Evaluate the expression. 3² + 6 × 2² - 4² ÷ 2³ = ?
guapka [62]

Answer:

3² + 6 × 2² - 4² ÷ 2³ = 31.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
IM 20 MIN AWAY FROM FAILING PLZZZ HELPPPP​
padilas [110]

Answer:

13 and 32

Step-by-step explanation:

let one number be x

Then the other number is x + 19 , then

x + x + 19 = 45

2x + 19 = 45 ( subtract 19 from both sides )

2x = 26 ( divide both sides by 2 )

x = 13

The 2 numbers are 13 and 13 + 19 = 32

5 0
3 years ago
Other questions:
  • Five friends had lunch together. Their lunch bill included these amounts: $8.79, $5.15, $11.73, $2.49, and $9.05. Estimate the t
    7·2 answers
  • Help me with the answers
    12·1 answer
  • 7. Point D is reflected across the x-axis. What are the coordinates of its image?
    9·1 answer
  • A school day starts at 07:15. There are three periods of 40 minutes, four periods of 35 minutes and two periods of 50 minutes. T
    11·1 answer
  • After t years the annual sales in hundreds of thousands of units of a product q is given by the equation q= (1/2)0.8t after how
    14·1 answer
  • Question 3(Multiple Choice Worth 5 points)
    14·1 answer
  • to make pink paint, sylvia mixes 7 cups of white paint to every 3 cups of red paint. which table shows possible values of w, the
    8·1 answer
  • Robin, Ashley, Joy, and Christina collected 156 acorns to make fall decorations. Robin collected three times as many acorns as A
    5·1 answer
  • What is 2÷4 I definitely don't know ​
    6·1 answer
  • PLEASE HELP QUICK!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!