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
butalik [34]
4 years ago
15

What are the solutions of the equation x2 – 1 = 15?

Mathematics
2 answers:
raketka [301]4 years ago
7 0
X^2-1=15
x^2=16
x=-4,4
Mila [183]4 years ago
7 0

Answer:

C

Step-by-step explanation:

NEXTQUESTION ALSO C

You might be interested in
Just number 23 super confused
vodka [1.7K]

Answer:

x = -7

Step-by-step explanation:

This is an exponential equation.

\frac{1}{2}^x=128

We need to take log(or ln) of both sides and use logarithm property to solve this.

So, let's take ln of both sides, so we have:

ln(\frac{1}{2}^x)=ln(128)

Now, we will use this property shown below to further simplify:

ln(a^b)=bln(a)

So, we now have:

ln(\frac{1}{2}^x)=ln(128)\\xln(\frac{1}{2})=ln(128)\\x=\frac{ln(128)}{ln(\frac{1}{2})}\\x=-7

The value of x is -7

6 0
4 years ago
Find cosx if tanx cscx=2<br><br> A)2<br> B)square root 2<br> C)square root 2/2<br> D)1/2
zhenek [66]
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
↓↓↓↓↓↓↓

3 0
3 years ago
Read 2 more answers
The base of a cube is parallel to the horizon. If the cube is cut by a plane to form a cross section, under what circumstance wo
Keith_Richards [23]
This question has this set of answer choices:

a) when the plane cuts three faces of the cube, separating one corner from the others

b) when the plane passes through a pair of vertices that do not share a common face

c) when the plane is perpendicular to the base and intersects two adjacent vertical faces

d) when the plane makes an acute angle to the base and intersects three vertical faces

e) not enough information to answer the question

The right answer is the first choice: a) when the plane cuts three faces of the cube, separating one corner from the others

You can see a picture of this case in the figure attached: as you can see the cross section (in pink) is a triangle.

8 0
3 years ago
Read 2 more answers
Choose the best definition for the term: factor. *
pashok25 [27]
A. One or two or more numbers, algebraic expression, or like that when multiplied together produce a given product.

Hope this helps :)
8 0
3 years ago
Tuiton at a certain college recently increased from $4000 to $5000. Find the ratio of the increase in price to the original pric
koban [17]
The increase is $5000-$4000=$1000.  The ratio of this increase to the original price is 

$1000
-------- = 1/4 (no units of measurement here)
$4000
8 0
4 years ago
Other questions:
  • If someone answers these i will give brainlest um anyways i will drop the question right below here. THANK YOU
    6·1 answer
  • Kareem lives 4/10of a mile from the mall . write equivalent fractions that show what fraction of a mile karen lives from the mal
    14·1 answer
  • Look at the following numbers:<br> -4, -1,0,4<br> Which pair of numbers has a sum of 0?
    5·2 answers
  • Which could be the missing reason in Step 3?
    7·2 answers
  • Round to the nearest ten thousand and then subtract
    5·1 answer
  • The Hoffman family has bought one pizza on Friday night every week for the last 10 years. How many pizzas have they bought on Fr
    7·1 answer
  • Pls help me i need it pls
    14·2 answers
  • Find the measure of y.<br><br><br><br><br> 145°<br><br><br> 130°<br><br><br> 129°<br><br><br> 134°
    8·1 answer
  • What is the estimate of 45.15
    14·1 answer
  • What kind of transformation is illustrated in this figure?A) rotationB) reflectionC) translation
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!