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
Mnenie [13.5K]
4 years ago
13

Help me solve this please

Mathematics
1 answer:
Tresset [83]4 years ago
3 0
6v = 5/8+ 7/8
6v= 12/8
6v=6/4 = 3/2
V= (3/2)/6
V=(3/2) • (1/6)
V= 3/12

V = 1/4
You might be interested in
What are the solutions of x^2-2x+5=0
sweet [91]

The solution of x^{2}-2 x+5=0 are 1 + 2i and 1 – 2i

<u>Solution:</u>

Given, equation is x^{2}-2 x+5=0

We have to find the roots of the given quadratic equation

Now, let us use the quadratic formula

x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}  --- (1)

<em><u>Let us determine the nature of roots:</u></em>

Here in x^{2}-2 x+5=0 a = 1 ; b = -2 ; c = 5

b^2 - 4ac = 2^2 - 4(1)(5) = 4 - 20 = -16

Since b^2 - 4ac < 0 , the roots obtained will be complex conjugates.

Now plug in values in eqn 1, we get,

x=\frac{-(-2) \pm \sqrt{(-2)^{2}-4 \times 1 \times 5}}{2 \times 1}

On solving we get,

x=\frac{2 \pm \sqrt{4-20}}{2}

x=\frac{2 \pm \sqrt{-16}}{2}

x=\frac{2 \pm \sqrt{16} \times \sqrt{-1}}{2}

we know that square root of -1 is "i" which is a complex number

\begin{array}{l}{\mathrm{x}=\frac{2 \pm 4 i}{2}} \\\\ {\mathrm{x}=1 \pm 2 i}\end{array}

Hence, the roots of the given quadratic equation are 1 + 2i and 1 – 2i

6 0
3 years ago
The sales tax is ​$161.10 on a stereo sound system purchase of ​$ 1790. Find the sales tax rate.
shutvik [7]

Answer:

9%

Step-by-step explanation:

We'll find the tax rate by looking at the proportion of tax to purchase amount.

That's \frac{161.1}{1790} = 0.09 = 9\%.

5 0
2 years ago
Teach me how to ''write each rational number in a form a/b where a and b are integers
Vesna [10]
Write the number over its next next factor of 10. Then multiply by 10s to get rid of the decimal (if there is). Then just simplify.

8 0
3 years ago
13. In the given circle, AB = 13 m, BC = 6 m, and CD = 8 m. If DE = x, find the value
Viefleur [7K]

do you know what the answer was?

6 0
3 years ago
Expand the following:<br>2/5 (2x - 7)
melisa1 [442]

Answer:

i think it is c  or d

Step-by-step explanation:

6 0
4 years ago
Other questions:
  • An architect used this diagram to design a curved balcony. She drew a circle with a radius of 40 feet and a central angle of 70°
    9·1 answer
  • A bookstore has 15 isles each I’ll has 22 shells how many shells are in the bookstore
    13·2 answers
  • Select the correct answer from each drop-down menu.
    15·1 answer
  • Which expression is NOT equivalent to<br> 64?<br> 2^-6<br> 8^-2<br> 64^-1<br> 4^-4
    6·1 answer
  • For the picture of the kite below, how would you prove that triangle BCE is congruent to triangle DCE if ∠1 is congruent to ∠2 a
    11·1 answer
  • 8. Gisele spins a spinner that has equally
    14·2 answers
  • If you have a bag full of balls. It has 6 blue balls, 6 red balls, and 6 green balls. Let's say you take three balls randomly at
    9·1 answer
  • Pls help pls help pls help
    14·1 answer
  • Explain what a random sampling process is
    9·1 answer
  • A motorbike is priced at $945.50 Johnson has $ 5000.<br> How many motorbikes could he buy?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!