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
fomenos
3 years ago
10

What are the solving steps and two

Mathematics
2 answers:
Pepsi [2]3 years ago
5 0

Answer:

-x² - 10x -21 = 0

x² +10x +21 = 0

x² + 7x + 3x + 21 = 0

x ( x+7) + 3 (x+7) = 0

(x+3) (x+7) = 0

when (x+3) = 0,

   x = -3

Again,

(x+7) = 0

x = -7

konstantin123 [22]3 years ago
5 0

Answer:

7 and 3

Step-by-step explanation:

-b +/- sqrt(b^2+4ac)/2a

10 +/- sqrt(100-84)/2

10 +/- 4/2

7 and 3

You might be interested in
Circumference of 6cm ? help plz <3 heyyy b a e (bet you won't reply :)
Naily [24]

Answer:

If r = 6 cm, the the circumference is c = 2π(6) = 12π cm

HOPE THIS HELPS AND PLS MARK AS BRAINLIEST

THNXX :)

7 0
3 years ago
A rectangular box has length 9 inches, width 7 inches, and a height of 15 inches. find the angle between the diagonal of the box
uysha [10]
0.92085175 radians  
Let's first calculate the length of the diagonal of the base. Using the Pythagorean theorem:
 b = sqrt(9^2 + 7^2) = sqrt(81 + 49) = sqrt(130) = 11.40175425 
 Now the length of the diagonal to the box. Once again, using the Pythagorean theorem:
 d = sqrt(15^2 + 11.40175425^2) = sqrt(225 + 130) = sqrt(335) = 18.84144368 
 We now have a right triangle where we know the lengths of all three sides. The lengths are:
 a = 15
 b = sqrt(130) ≠11.40175425
 c = sqrt(335) ≠18.84144368
 
 we want the angle opposite to side a. So
 tan(A) = 15/11.40175425 = 1.315587029
 A = atan(1.315587029)
 A = 0.92085175 radians
4 0
4 years ago
If f(x) = x2 – 2x + 3, then find<br> f(-3).
Georgia [21]

Answer:

f(-3) = 18

Step-by-step explanation:

We need just substitute x with (-3) and calculate it.

f(-3) = (-3)² -2*(-3) + 3 = 9 + 6 +3 = 18

7 0
3 years ago
What is 2+2 I need help and how to explain.
Ket [755]
Lol its 4 put up two fingers then add two more
7 0
4 years ago
Read 2 more answers
Please help me ASAP easy problem giving brainlist!!
Fiesta28 [93]
<> because it means greatest and least only
7 0
3 years ago
Read 2 more answers
Other questions:
  • Five pounds is 2.268 times as heavy as one kilogram. How many times as heavy is two pounds than one kilogram?
    12·2 answers
  • The population of Old Town is 130,000. One hundred of the residents were randomly surveyed about the number of pets in their hou
    5·1 answer
  • How many sixteenths are in 15/16
    15·2 answers
  • Write an expression to show how many hours are equivalent to 360 minutes
    5·1 answer
  • Pleasee pleeeaassee help. TY
    5·1 answer
  • Dried bananas sell at $4.59/kg and dried apricots sell at $6.59/kg. How many of kilograms of each should be used to make a mixtu
    15·1 answer
  • Need help with this geometric question ASAP, Thank you
    13·1 answer
  • 50 POINTS PLEASE ANSWER
    6·2 answers
  • Translate sentence into inequality
    5·1 answer
  • Hurry ill give brainly
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!