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
My name is Ann [436]
3 years ago
8

Solve by factoring or finding square roots x^2-18x-40=0

Mathematics
2 answers:
irina1246 [14]3 years ago
8 0

Answer:

Step-by-step explanation:

podryga [215]3 years ago
7 0

Answer:x=-2 or x=20

Step-by-step explanation:

X^2-18x-40=0

X^2+2x-20x-40=0

X(x+2)-20(x+2)=0

(X+2)(x-20)=0

X+2=0 or x-20=0

X=-2 or x=20

You might be interested in
5. Find the thickness of each layer. Use the data to determine the percentage of the total
zmey [24]

Answer:

Exosphere - 10,000 kilometers thick

Thermosphere - 513 kilometers

Mesosphere - 2200 km

Stratosphere - Depends, but most occurring thickness is 50km

Troposphere - 8-14km

Step-by-step explanation:

Double check and verify this information with your lesson since honestly the numbers could very well differ depending on your lesson and when they were taken. I hope this helps though..have a good one

3 0
2 years ago
12. 4x2 - 4y2 + 1622 - 16xz​
Snezhnost [94]

Answer:

8(203-2xz)

1624-16xz

have a great day :)

5 0
3 years ago
Read 2 more answers
Given f(x) = 10 - 16/x, find all c in the interval [2,8] that satisfy the mean value theorem
Katen [24]
F(x)=10-16/x
f'(x)=16/x^2
f'(c)=16/c^2
f(8)=10-16/8=10-2=8
f(2)=10-16/2=10-8=2
f'(c)= \frac{f(b)-f(a)}{b-a} in (2,8),
 \frac{16}{c^2} = \frac{f(8)-f(2)}{8-2} ,
 \frac{16}{c^2} = \frac{8-2}{8-2}

4∈[2,8] is the required point.
8 0
3 years ago
Read 2 more answers
What is the constant of proportional
Bond [772]

Answer:

The constant value (often written k) relating amounts that rise or fall uniformly together. It is the ratio of the amounts y and x: k = y/x. Put another way: y = kx.

5 0
3 years ago
What is the area of this polygon? 42. 5 units² 41. 5 units² 35. 5 units² 29. 5 units².
Alona [7]

The area of the polygon is 35.5 square units. Option C shows the correct area of the given polygon.

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

The area can be defined as the amount of space used by a two-dimensional object.

Given that ABEDFG is a polygon. As shown in the attachment, we divided the polygon into 4 different parts.

In triangle EDC, EC = 3, DC = 4.

Area = \dfrac { 1}{2} \times EC \times DC

Area = \dfrac {1}{2} \times 3\times 4

Area = 6

In triangle GFD, height = 2, base = 7.

Area = \dfrac { 1}{2} \times base \times height

Area = \dfrac {1}{2} \times 2\times 7

Area = 7

In triangle GDA, AD = 3, GD = 7.

Area = \dfrac { 1}{2} \times AD \times GD

Area = \dfrac {1}{2} \times 3\times 7

Area = 10.5

In rectangle ABCD, DC = AB = 4, CB = AD = 3.

Area = AB\times AD

Area = 4\times 3

Area = 12

The area of the polygon is the sum of all the areas.

Area = 6 + 7 + 10.5 + 12

Area = 35.5 square units.

Hence we can conclude that the area of the polygon is 35.5 square units. Option C shows the correct area of the given polygon.

To know more about the area, follow the link given below.

brainly.com/question/1631786.

7 0
2 years ago
Read 2 more answers
Other questions:
  • What is 5/2 times 24/1? (explanation please!)
    12·1 answer
  • If the equation y = 1/3 x + 2 is changed to y = 3x + 2, what will be true about the graph of the equation?
    9·2 answers
  • Give answer for 5 please
    14·1 answer
  • Suppose c and d vary inversely, and d = 2 when c = 17.
    12·1 answer
  • I need this to be answered PLEASE!!!
    7·1 answer
  • Bill reads 1/5 of a book on Monday he reads 2/3 of a book on Tuesday if he finish reading the book on Wednesday what fraction of
    8·1 answer
  • A padlock has a four-digit code that includes digits from 0 to 9, inclusive. What is the probability that the code does not cons
    14·2 answers
  • One question is all I need help on.
    13·1 answer
  • Carlos and Lily want to know the combined amount of money they made last week. They both made $12 per hour, but Carlos also made
    6·1 answer
  • There are 400 seats in a auditorium.the students are using 3/5 of the seats and the teachers are using 60 seats.How many seats a
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!