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
Serhud [2]
3 years ago
5

Solve for x. 8x^2-3=2

Mathematics
1 answer:
Mazyrski [523]3 years ago
7 0
(2^3x^2 -  3) -  2  = 0 \\ \\  Factoring:  \ 8x^2-5 \\ \\   8x^2 - 5  = 0 \\ \\  Add \ 5  \ to \ both \ sides \ of \ the \ equation : \\ \\ 
                      8x^2 = 5 \\ \\ Divide \ both \ sides \ of \ the \ equation \ by \ 8: \\ \\ 
                     x^2 =  \frac{5}{8}  = 0.625 \\ \\ \boxed{ x  =\pm  \sqrt 5/8}

Your answer: Option A
You might be interested in
Gannon has deposited $742 in a savings account that earns interest at a rate of 3.4% compounded monthly. What will the account b
marta [7]
Firstly, solve the effective annual interest (ieff) with the equation,
 
                          ieff = (1 + i/m)^m -1

where i is the interest rate and m is the number of times the interest is compounded in a year. In this problem, m is 12

Substituting the values, 
                            ieff = (1 + 0.034/12)^12 - 1 =0.03453

To solve for the future (F) amount of the present investment (P), 
                                       
                                        F = P x (1 + ieff)^n

where n is number of years.
 
                                        F = ($742) x (1 + 0.03453)^15

Thus, the answer is $1234.76. 


 
                

7 0
3 years ago
Big will's ice cream cone contains 16 grams of saturated fat. This is 80% of his total daily allowance. What big will's total da
Ahat [919]

Answer:

20 grams

Step-by-step explanation:

Let x be the total allowance of fat

16 grams is 80% of his total allowance

x * 80% = 16

Change percent to a decimal

x *.8 = 16

Divide each side by .9

.8x/.8 = 16/.8

x = 20

8 0
3 years ago
Soon-Jin sent out 48 invitations, this was 4/5 of all her invitations. How many invitations will she send out in total?
stepladder [879]
If 4/5 of the total is 48, the total can be found by dividing it by 4 and multiplying it by 5:
48/4 = 12
12*5 = 60.
3 0
3 years ago
Read 2 more answers
Bob is buying coffee for his coffee machine.Option 1 is $5.99 for 12 coffeesOption 2 is 23.99 for 70 coffee Which is the better
velikii [3]

Step 1: Let's review the information provided to us to answer the problem correctly:

• Option 1: $5.99 for 12 coffees

,

• Option 2: $ 23.99 for 70 coffee

Step 2: Let's calculate the cost of a coffee in each option, as follows:

• Cost of a coffee in Option 1 = 5.99/12 = 0.50 (rounding to the next cent): This means that every cup of coffee costs $ 0.50

• Cost of a coffe in Option 2 = 23.99/70 = 0.34 This means that every cup of coffee costs $ 0.34

Step 3: Now we can decide which is the better deal and why.

The better deal is option ........ because it is cheaper than option..........

You can complete step 3, Kay.

6 0
1 year ago
Faizan buys a car for £2000.Its value depreciates by 2% each year. How much is it worth after 1 year?
Tresset [83]

Answer:

£1960

Step-by-step explanation:

Step 1.

2% = 100% ÷ 50

Step 2.

£2000 ÷ 50 = £40

Step 3.

£2000 - £40 = £1960

3 0
3 years ago
Other questions:
  • NEED HELP NOW HAVE BEEN STUCK FOR 2 DAYS
    10·2 answers
  • The red shape has been translated into the blue shape. The translation is
    9·1 answer
  • Does a point have width
    14·1 answer
  • F AB:BC is 3:11, solve for x
    6·1 answer
  • Judy can decorate 3 cakes in 5 hours. Which graph represents this same rate?
    15·2 answers
  • 1) simplify -2x × 5x ​
    15·1 answer
  • Two sides of an isosceles triangle measure 3 inches and 7 inches. Which could be the length of the third side?
    7·1 answer
  • Solve the equation <img src="https://tex.z-dn.net/?f=8x%5E2%3D-36" id="TexFormula1" title="8x^2=-36" alt="8x^2=-36" align="absmi
    11·2 answers
  • IV.Activity
    11·1 answer
  • Help please asap!!<br> A- z=15<br> B- z= 20<br> C- z=23<br> D- z=41
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!