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
lidiya [134]
1 year ago
12

Solve the equation by factoring. x² + 2x - 63 = 0 x = -9, [?]

Mathematics
1 answer:
xeze [42]1 year ago
7 0

Step-by-step explanation:

x² + 2x - 63 = 0

(x+9)(x-7)=0

x=-9 x=7

You might be interested in
Use the following image to assist in your answer.<br> a =<br> - 6<br> - 9<br> - 4
vfiekz [6]

Step-by-step explanation:

Pythagoras' theorem for the smallest one :

c^2 = 4^2 + 6^2

c^2 = 16 + 36

c^{2} = 52

Pythagoras' theorem for the middle one :

b^{2} = 6^{2} + a^{2}

Pythagoras' theorem for the biggest one :

(4+a)^2 = c^2 + b^2

16 + 8a + a^2 = 52 + b^2

Using the formula before (for b^2) it becomes :

16 + 8a + a^2 = 52 + (6^2 + a^2)

16 + 8a + a^2 = 52 + 6^2 + a^2

16 + 8a = 52 + 6^2

16 + 8a = 52 + 36

16+8a = 88

8a = 88-16

8a = 72

a = \frac{72}{8}

a = 9

Verifying :

b^2 = 6^2 + a^2

b^2 = 36 + 81

b^2 = 117

b^{2} = 117

The biggest one :

(4+a)^2 = c^2 + b^2

(4+9)^2 = 52 + 117

13^2 = 169

True

8 0
3 years ago
Person who answers first I will give 30 points needed asap​<br>what is AoC<br>BoC <br>DoE<br>​
Degger [83]

Answer:

First of AOD is verticallly opposite to BoC which makes it 55°

Angle at AoC is 55°+55°+105° minus 360 which is 145° hope this helps

7 0
3 years ago
Given a trapezoid with a height of 4.3m and bases of 9.2 m and 3.2m, what is the area of the trapezoid? Do not include units in
77julia77 [94]

For  a height of 4.3m and bases of 9.2 m and 3.2m, the area of the trapezoid  is mathematically given as

A=26.7

<h3>What is the area of the trapezoid?</h3>

Generally, the equation for the trapezoid   is mathematically given as

A=0.5*(a+b)*h

Therefore

A=0.5*(3.2+9.2)*4.3

A=26.7

In conclusion,area of the trapezoid

A=26.7

Read more about Arithmetic

brainly.com/question/22568180

7 0
2 years ago
An educational researcher is studying two similar high schools in different states. Suppose that 50% of all
stich3 [128]
The answer is 525, meaning it’s more than it should be, hope i helped!
4 0
3 years ago
How many quarts, rounded to the nearest tenth, are in 50 liters
Lyrx [107]

Answer:

about 55 quarts

Step-by-step explanation:

1.1 * 50

6 0
3 years ago
Read 2 more answers
Other questions:
  • Draw a graph of 2x - 3y = 6​
    10·1 answer
  • The Ocean Cleanup project estimates its 001/B system could clean up 733
    9·1 answer
  • Multiply One and three-fourths × Four-fifths.
    5·2 answers
  • If the midpoint of segment AB is M(1,-3) and B(5,-10), find the coordinates of point A.
    15·1 answer
  • How do I solve 3x+3y=-3 and y=5x-1 each system by substitution?
    6·1 answer
  • Solve the following system of equations
    15·1 answer
  • Does this equation produce a horizontal or vertical line: y=5
    9·1 answer
  • A target is constructed of a 6 ft diameter circular piece of plywood, on which a 2 ft diameter circle was painted. If a person i
    9·1 answer
  • My sister has trouble once again
    12·1 answer
  • 10. Write an equation to represent this situation. Use c to represent the cost of the apples in dollars and p to represent the w
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!