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
Svetach [21]
3 years ago
13

I forgot how to do these, could somebody explain. 30 points for both

Mathematics
1 answer:
Aleonysh [2.5K]3 years ago
7 0

Answer:

11) A

12) B

Step-by-step explanation:

11) 10x² + 1 = 0

Subtract 1 from both sides:

10x² = -1

Divide both sides by 10:

x² = -1/10

Take the square root of both sides:

x = ±√(-1) / √(10)

Remember that the square root of -1 is i:

x = ±i / √(10)

To rationalize the denominator, multiply top and bottom by √10.

x = ±i√(10) / 10

Answer is A.

12) 2v² + 8v + 6 = 0

Divide both sides by 2:

v² + 4v + 3 = 0

Use AC method or quadratic formula to factor:

(v + 1) (v + 3) = 0

Set each expression to 0:

v + 1 = 0 or v + 3 = 0

Solve:

v = -1 or v = -3

Answer is B.

You might be interested in
Ingrid Nilsen purchased a $4,000 hydroponic system for her garden. The down payment is 20%, and the
Cerrena [4.2K]

The purchase of the hydroponic system by Ingrid Nilsen for $4,000 with a 20% down payment at 10% APR for 36 months, and the related calculations, are as follows:

a) down payment = $800.00 ($4,000 x 20%)

b) amount financed = $3,200 ($4,000 - $800)

c) monthly payment = $103.25

d) total amount repaid = $4,517

e) finance charge = $517

<h3>How is periodic payment computed?</h3>

The amount of the periodic payment, finance charge, and total repayment can be computed using an online finance calculator as follows:

<h3>Data and Calculations:</h3>

Auto Price = $4,000

Loan Term = 36 months

Interest Rate = 10%

Down Payment = $800 ($4,000 x 20%)

Monthly Payment  = $103.25

Total Loan Amount $3,200.00

Upfront Payment = $800.00 ($4,000 x 20%)

Total of 36 Loan Payments = $3,717. ($103.25 x 36)

Total Loan Interest = $517

Total Cost (price, interest, tax, fees) = $4,517

Thus, Ingrid Nilsen repaid a total of $4,517 with $517 in interest (finance charge).

Learn more about periodic payments at brainly.com/question/13098072

#SPj1

5 0
2 years ago
Domain and range of |x – 4| + 6
Maslowich

Answer:

x+2

Step-by-step explanation:

3 0
3 years ago
PLZ help <br><br> (5x10^2)+(4x10^3)
timurjin [86]
10 x 10 = 100
100 x 5 = 500
10 x 10 x 10 = 1,000
1,000 x 4 = 4,000
4,000 + 500 = 4,500
Hope this helped!
7 0
3 years ago
Read 2 more answers
For a system of linear equations, the solution for the system is__
amm1812
For a system of linear equations, the solution for the system is____.

Answer: The solution to a system of linear equations in two variables is any ordered pair that satisfies each equation independently. In this example, the ordered pair (4,7) is the solution to the system of linear equations.
Picture:

8 0
2 years ago
Rob has 10 white, 8 red and 6 blue socks in his drawer. if he selects socks from the drawer randomly, without looking, what is t
s344n2d4d5 [400]
The least number of socks that rob can remove to guarantee he removed a pair of white socks without looking is15 socks
5 0
3 years ago
Other questions:
  • 14÷7= ¿<br>A. 8<br>B.2<br>C.15<br>Helppppp
    12·2 answers
  • PLEASE HELP ME SOLVE THIS, WHOEVER DOES WILL EARN 100 PTS!!!!!!!!!!!!!
    11·2 answers
  • A rectangular prism has a length of 5 cm, a width of 212 cm, and a height of 112 cm. Which expressions can be used to find the v
    5·2 answers
  • Square root 230in simplified in redical form.
    7·1 answer
  • 5 times as much as 7 tenth
    15·1 answer
  • 4. At lunch, Samantha bought a sandwich for
    9·1 answer
  • Greatest common factor of 112 and 63
    8·1 answer
  • A circle is to be cut from a 12 ft square board. What will be the area, in square feet, of the inscribed circle? Leave your answ
    5·1 answer
  • A TRIANGLE has a base of 20 inches and height of 9 inches. What is its area? (a = 1/2bh)
    10·1 answer
  • A rectangle of dimensions 60 units x 40 units is drawn on grid paper with vertices in
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!