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
konstantin123 [22]
3 years ago
8

Solve the equation using the zero product property -2x(5x-2)=0

Mathematics
1 answer:
anastassius [24]3 years ago
5 0

Answer:

A

Step-by-step explanation:

Given

- 2x(5x - 2) = 0

Equate each factor to zero and solve for x

- 2x = 0 ⇒ x = 0

5x - 2 = 0 ⇒ 5x = 2 ⇒ x = \frac{2}{5}

Solutions are

x = 0, x = \frac{2}{5}

You might be interested in
A sample with a mean of m = 40 and a variance of s2 = 20 has an estimated standard error of 1 point. how many scores are in the
tamaranim1 [39]

The correct option is 20.

The score found for the sample is 20.

<h3>What is Standard error?</h3>

A standard error is a statistic that is applied to test the distribution of data. This metric is comparable to standard deviation. We can calculate the standard error if we know the sample size & standard deviation. It assesses the mean's precision.

Now, according to the question;

Sample mean; \bar{x}=40

Sample variance; s^{2}=20

Thus, s=\sqrt{20}=4.47

Standard error SE = 1

The amount of scores with in sample must be determined here.

The standard error formula is as follows:

S E=\frac{s}{\sqrt{n}}

We might rearrange the formula as follows:

\begin{aligned}\sqrt{n} &=\frac{s}{S E} \\n &=\left(\frac{s}{S E}\right)^{2}\end{aligned}

Substituting the values;

\begin{aligned}&n=\left(\frac{4.47}{1}\right)^{2} \\&n=19.98\end{aligned}

The sample's number of scores n = 19.98 = 20 (round up)

Therefore, the scores are in the sample is 20.

To know more about the Standard error, here

brainly.com/question/14467769

#SPJ4

3 0
2 years ago
van someone please help me with this i dont need an explaination i just need a. b. c. or d. please and thank you
Talja [164]

Answer:

option C

f(x)=-\sqrt{x+3}+8

Step-by-step explanation:

we have

f(x)=-2\sqrt{x-3}+8

using a graphing tool

see the attached figure N1

The range is the interval--------> (-∞,8]

y\leq 8

case A) f(x)=\sqrt{x-3}-8

using a graphing tool

The range is the interval--------> [-8,∞)

y\geq -8

case B) f(x)=\sqrt{x-3}+8

using a graphing tool

The range is the interval--------> [8,∞)

y\geq 8

case C) f(x)=-\sqrt{x+3}+8

using a graphing tool

The range is the interval--------> (-∞,8]

y\leq 8

case D) f(x)=-\sqrt{x-3}-8

using a graphing tool

The range is the interval--------> (-∞,-8]

y\leq -8

5 0
4 years ago
Geometry please help
ella [17]

Answer:

1. A sound wave in air has a frequency of 262 Hz and travels at a speed of 330 m/s.

2. Sound has a speed of 340 m/s in air at room temperature.

3. A wave has a frequency of 500 Hz and a wavelength of

4. The speed of light is 3.0x10^8 m/s, calculate for the frequency.

#CarryOnLearning

#LearnWithBrainly

Sana makatulong po ako

5 0
3 years ago
I make $40,000 per year. I have been offered a promotion and a $5,000 raise per year. My average federal income tax rate will go
Paha777 [63]

Answer:

Yes

Step-by-step explanation:

40000 x .10 is 4000 in tax. Total after tax would be 36,000

45,000 × .15 is 6750. Total after tax would be 38,250 which is more

6 0
3 years ago
Solve the equation.<br> 9 = 8n<br> n =
blsea [12.9K]
N equals 1.125. Percent are y’all going to be doing okay now lol ima is my life day to wiwiwiwiwiwiwow
4 0
3 years ago
Read 2 more answers
Other questions:
  • The distance d (in miles) you travel in a car is given by the two equations shown, where t is the time (in hours) and g is the n
    7·2 answers
  • What is the difference between lateral surface area and total surface area? If there are different formulas for each, please lis
    7·1 answer
  • Find the solution set of this inequality. select the correct graph. |-4x+14|&gt;6
    10·1 answer
  • 20) PLS HELP WITH QUESTION ASAP
    12·1 answer
  • How do I find the measure of the angle indicated with bold?
    14·1 answer
  • If f(x) = x^2 is vertically stretched by a factor of 3 and shifted down 7 to form g(x), which of the following equations best re
    9·2 answers
  • Write the equation 6x-3y=9 in slope-intercept form. Then graph the line described by the equation .
    5·1 answer
  • Giving Brainliestttttttt to first answer that’s correct!
    15·1 answer
  • The radius of circle A is r cm. The radius of circle B is twice the radius of circle A. What difference between the circumferenc
    12·1 answer
  • the perimeter of a rectangle is 302 the length is 131 more times than the width find the length and width ​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!