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
Feliz [49]
3 years ago
7

PLEASE HELP I DONT KNOW WHAT TO DO !! I APPRECIATE IT IF YOU HELP ME !

Mathematics
1 answer:
attashe74 [19]3 years ago
8 0

Answer:

x = ±20

Step-by-step explanation:

x^2 -1=399

Add 1 to each side

x^2 = 399+1

x^2 = 400

Take the square root of each side

sqrt(x^2) = ±sqrt(400)

x = ±20

You might be interested in
The box plots compare the number of students in Mr. Ishimoto’s classes and in Ms. Castillo’s classes over the last two semesters
Ilya [14]
<span>-Both box plots show the same interquartile range.
 >Interquartile range (IQR) is computed by Q3-Q1. 
For Mr. Ishimoto's class, Q3 is 35 and Q1 is 31. 35-31 = 4.
For Ms. Castillo's class, Q3 is 34 and Q1 is 30. 34-30 = 4.

</span><span>-Mr. Ishimoto had the class with the greatest number of students.
 >Mr. Ishimoto had 40 students, represented by the last data point of the whiskers.

</span><span>-The smallest class size was 24 students.
 >Which was Ms. Castillo's class.</span>
7 0
3 years ago
Read 2 more answers
What is 30/45 simplest form
Marysya12 [62]
\dfrac{30}{45}=\dfrac{30:15}{45:15}=\dfrac{2}{3}
5 0
4 years ago
Max's car holds 18 gallons of gasoline. Driving on the highway, the car uses approximately 2 gallons per hour. Let h represent t
Mice21 [21]
Y= 18 gallons-2(h)
y is what you're trying to find out and since there are 18 gallons in the tank after every hour you would have 2 less gallons. So, you can multiply how many hours he's been driving by the 2 gallons and subtract it from 18


3 0
3 years ago
What volume in liters would be occupied by 21753mg of a material with density of 1.935 g/mL
REY [17]

Answer:

0.0112 liters to the nearest ten thousandth.

Step-by-step explanation:

Density = mass / volume

So volume = mass / density.

Mass = 21753 mg = 21753 / 1000 = 21.753 g.

Density = 1.935 g/mL = 1.935 * 1000 = 1,935 g/L.

Volume in liters =  21.753 / 1,935

= 0.0112 liters to the nearest ten thousandth.

3 0
3 years ago
Please help me with this
aivan3 [116]

Answer:

there are ten vertices

Step-by-step explanation:

count each point where lines meet

4 0
3 years ago
Other questions:
  • Suppose a random sample of size is selected from a population with . Find the value of the standard error of the mean in each of
    7·1 answer
  • Nina received two emails on Monday every day that she received one more than twice as mini as the day before how many emails did
    8·2 answers
  • A number decreased by twelve is twice the opposite of ten. Find the number.
    15·2 answers
  • Solve for the given variable (see pic)
    14·2 answers
  • Which expression is equivalent to y^4 -100?
    11·1 answer
  • Please help me fast. I’m confused.<br><br> Find the value of x.<br> 168<br> x = [? ]°
    6·1 answer
  • Help PLEASE ill give brainliest!
    14·2 answers
  • What is the value of x?
    6·1 answer
  • Which expressions are equal to 105?
    13·1 answer
  • Find the area of a regular polygon with 9 sides that has a perimeter of 135 inches and an apothem of 6 inches
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!