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
djyliett [7]
2 years ago
12

What is the value of z in the equation 3z+9=z?

Mathematics
2 answers:
Dmitry_Shevchenko [17]2 years ago
6 0

Answer:

Answer: The value of z is 12 .

Hope it helps you.

Step-by-step explanation:

amm18122 years ago
5 0
In the exact form, Z equals -9/2
You might be interested in
if layla can right 20 essays in 15 minutes and 8 in 6 minutes then how many can she right in 45 minutes?​
scoray [572]

Answer:

60! hope this helps!

Step-by-step explanation:

4 0
3 years ago
What errors did Amy make? Select all that apply.
Rashid [163]
She added the numerators
instead of multiplying them

you should also simplify the final answer

the correct answer would be -3 1/8 or -25/8 as an improper fraction.
7 0
3 years ago
Read 2 more answers
Will the standard form 3.2 × 10–4 be more or less than 1? Explain what effect the negative exponent has. Thanks! =)
laila [671]
3.2 * 10^-4 = 0.00032
So the number is less than 1.

The effect the negative exponent has is.....well...here's an example

if the exponent was a positive it would be 3.2 *10^4 = 32,000

If it was positive you would move the decimal point to the right (for this equation) 4 times... if it was negative you would move it the other way.

5 0
3 years ago
A researcher wishes to estimate the average blood alcohol concentration​ (BAC) for drivers involved in fatal accidents who are f
Mnenie [13.5K]

Answer:

A 90% confidence interval for the mean BAC in fatal crashes in which the driver had a positive BAC is [0.143, 0.177] .

Step-by-step explanation:

We are given that a researcher randomly selects records from 60 such drivers in 2009 and determines the sample mean BAC to be 0.16 g/dL with a standard deviation of 0.080 ​g/dL.

Firstly, the pivotal quantity for finding the confidence interval for the population mean is given by;

                               P.Q.  =  \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }  ~   t_n_-_1

where, \bar X = sample mean BAC = 0.16 g/dL

            s = sample standard deviation = 0.080 ​g/dL

            n = sample of drivers = 60

            \mu = population mean BAC in fatal crashes

<em>Here for constructing a 90% confidence interval we have used a One-sample t-test statistics because we don't know about population standard deviation. </em>

So, a 90% confidence interval for the population mean, \mu is;

P(-1.672 < t_5_9 < 1.672) = 0.90  {As the critical value of t at 59 degrees of

                                              freedom are -1.672 & 1.672 with P = 5%}    P(-1.672 < \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } } < 1.672) = 0.90

P( -1.672 \times {\frac{s}{\sqrt{n} } } < {\bar X-\mu} < 1.672 \times {\frac{s}{\sqrt{n} } } ) = 0.90

P( \bar X-1.672 \times {\frac{s}{\sqrt{n} } } < \mu < \bar X+1.672 \times {\frac{s}{\sqrt{n} } } ) = 0.90

<u>90% confidence interval for</u> \mu = [ \bar X-1.672 \times {\frac{s}{\sqrt{n} } } , \bar X+1.672 \times {\frac{s}{\sqrt{n} } } ]

                                       = [ 0.16-1.672 \times {\frac{0.08}{\sqrt{60} } } , 0.16+1.672 \times {\frac{0.08}{\sqrt{60} } } ]

                                       = [0.143, 0.177]

Therefore, a 90% confidence interval for the mean BAC in fatal crashes in which the driver had a positive BAC is [0.143, 0.177] .

7 0
3 years ago
What is solving systems of linear inequalities
S_A_V [24]
It is when you have to find out if the line is linear or a parabola it is often used in the graphing portion of algebra but never really after that<span />
6 0
3 years ago
Read 2 more answers
Other questions:
  • Find the volume of each of the following cubes. a. s = 7 kilometers b. s = 11 yards
    11·2 answers
  • Subtract: (−2x2 + 9x − 3) − (7x2 − 4x + 2)
    11·2 answers
  • A piece of bad news about your hotel goes viral. If each person, spreads the news to 5 people within 1 minute, how long will it
    11·2 answers
  • Smoe brought a bag of bird food that held 2 1/2 lbs. of food. He Fed Smoe Dog the same amount of food for each 12 days. How many
    12·1 answer
  • I NEED HELP RIGHT NOW PLEASE!!<br>solve 30-5x=4 for x​
    14·2 answers
  • What is true about angle ABC
    12·1 answer
  • Round to nearest hundredth<br>0.099​
    13·1 answer
  • What is 2/3 – (-2/3)?<br> A. -4/3<br> B. 4/3<br> C. 0<br> D. 2/3<br> Answer is B
    13·1 answer
  • Which algebraic expression is equivalent to the expression below?
    10·1 answer
  • You have 2 different savings accounts. For Account​ A, the simple interest earned after 9 months is ​$2.40. For Account​ B, the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!