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
Anastaziya [24]
3 years ago
11

Explain why the equation (x-4)2-28=8

Mathematics
1 answer:
Alex17521 [72]3 years ago
8 0

Answer:

x=10 or x=-2

Step-by-step explanation:

add 28 to both sides

(x-4)^2=36

sqrt both sides

remember to get positive and negative roots

x-4=+/-6

add 4 to both sides

x=4+/-6

x=4+6 or x=4-6

You might be interested in
A certain westbound U.S. highway truck route near a river has a downhill grade of 9%. (a) Explain what a 9% downhill grade means
pashok25 [27]

Answer:

A) A 9% downhill grade means that the decrease in elevation of the road over the segment is 9% of the change in Horizontal distance over the same segment. In other words, for every 100 horizontal feet the road descends 9 feet and the road has a slope of 0.09 vertical feet per horizontal foot.

Step-by-step explanation:

A Certain westbound U.S highway truck route near a river has a downhill grade of 9%

A) A 9% downhill grade means that the decrease in elevation of the road over the segment is 9% of the change in Horizontal distance over the same segment. In other words, for every 100 horizontal feet the road descends 9 feet and the road has a slope of 0.09 vertical feet per horizontal foot.

In other to make things clear, lets assume

for X = 1 , y = 9% = 0.09

for y =  9 , x = 9 / 0.09 = 100

slope = y/x = 0.09 / 1 = 0.09

5 0
3 years ago
77.00 original price and markdown 33 percent
spayn [35]

Answer:

51.59 would be the answer your looking for because,

math sentence: 77=100% -33%=51.59

explanation its a markdown of 33%

Plz mark brainliest

6 0
3 years ago
Find the value of the "?"
Andru [333]

Answer:

45

Step-by-step explanation:

Set up ratios for 2 similar triangles:

20/28=x/x+18

Cross multiply

28x=20x+360

8x=360

x=45

3 0
3 years ago
Help with (18.) please, it's stupid idk it but please, any help is appreciated!
gayaneshka [121]
60/(4/11) = (60×11)/4 = 165
6 0
3 years ago
Part 1.] Does the graph have even symmetry, odd symmetry, or neither?
QveST [7]
Part 1
The graph has even symmetry.  You can see that because it is symmetric with respect to the y-axis.
Functions that have even symmetry have the following property:
f(x)=f(-x)
Part 2
To answer this we can simply check if the property we mentioned earlier holds for this function.
sin(\frac{\pi}{2})\ne sin(-\frac{\pi}{2})
We can see that sine does not have even symmetry. 
In fact, sine function has the following property: 
sin(x)=-sin(x)
This is called odd symetry.
Part 3
Take a look at the function that you attached in the picture. We know that function has even symmetry. 
Reflection over x-axis and <span>180° rotation around the origin would give us -f(x). We would not end up with the same function, so these two are out. 
</span><span>90° rotation around the origin would mean we swapped x <span>and y</span> so that one is out too. R</span><span>eflection over the line y=x is a property of functions that have an odd symmetry.
We are left with reflection around y-axis and, as mentioned before, this is the property of evenly symmetric functions.</span>
4 0
4 years ago
Other questions:
  • Simplify 8 + 10a - 3 + 5a when a=3
    12·2 answers
  • I have 2 million.i spend 1.8 of it.how many thousands are left
    8·1 answer
  • Which of the following is an example of dependent events?
    5·2 answers
  • Thera are 9 players on a baseball team a club has 9 baseball teams how many baseball players are in the club
    13·2 answers
  • Calculate the area of the regular pentagon below:
    7·1 answer
  • Please help 7th grade math
    11·1 answer
  • What is the value of x in:<br>3x + 2(x + 1) = 12?<br>A.12<br>B.6 <br>C.10<br>D.2​
    14·2 answers
  • Answer these below. its for algerbra math​
    10·1 answer
  • Write 1 and 6/7 as an improper fraction.
    7·2 answers
  • What is the value of x? Enter your answer as a decimal to the nearest tenth in the box. ft
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!