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
sesenic [268]
3 years ago
5

A company is purchasing new computers for its new office. The expression below represents the total cost of the computers, inclu

ding an installation charge for all the computers. $115x+$100
The constant of the expression represents the ______ ,and the coefficient of x represents the ________

Anwers Option:
Cost per computer
installation charge
Number of computer
Mathematics
2 answers:
tangare [24]3 years ago
6 0
Well, we can see that 115x refers to something that increases by 115 per purchase, while the 100 refers to a one time cost. Out of the possible answers the only one time charge is the installation charge, which refers to the 100$, and the 115x refers to the computers. In 115x, the 115 refers to how much a computer costs, and the x refers to the number of computers.
Setler [38]3 years ago
6 0

Answer:

First blank:  installation charge; second blank:  cost per computer

Step-by-step explanation:

The variable x represents the number of computers.  Multiplying this by 115 means that the cost per computer must be $115.

Adding $100 to this would imply there is a secondary charge of $100; this must be the installation charge.

You might be interested in
Simplify 4d^2-3d+6
german
<span><span><span>3<span>d3</span></span>+<span>4<span>d2</span></span></span>+<span>2d</span></span>−3 and <span><span>−<span>2<span>w2</span></span></span>+<span>10w</span></span>−7 and <span>4<span>z3</span></span>−<span>6<span>z<span>2</span></span></span>
8 0
3 years ago
The focal lengths of the objective lens and the eyepiece of a microscope are 0.50 cm and 2.0 cm, respectively, and their separat
VladimirAG [237]

Answer:

- 103.7

Step-by-step explanation:

Given:

Focal length of the eyepiece, f = 2.0 cm

Focal length of the objective lens, f' = 0.50 cm

Separation for minimum eyestrain = 6,0 cm

Image distance, v = - 25 cm

Now, from the lens formula,

\frac{1}{f}=\frac{1}{u}+\frac{1}{v}

here, u is the object distance

on substituting the respective values, we get

\frac{1}{2}=\frac{1}{u}+\frac{1}{-25}

or

u = 1.852 cm

also, the separation is adjusted for minimum eyestrain,

therefore, image distance for the objective lens, v' = 6 - 1.852 = 4.148 cm

Now, for the objective lens

using the lens formula, we get

\frac{1}{0.5}=\frac{1}{u'}+\frac{1}{4.418}

Here, u' is the distance between the physical object and objective lens

or

u' = 0.568 cm

Thus,

Magnification, m = -\frac{vv'}{ff'}

or

m =-\frac{25\times4.418}{0.5\times2}

or

m = - 103.7

4 0
3 years ago
Find the value of C in the isosceles triangle shown below<br> Answer
dolphi86 [110]
Is it accurately drawn?
4 0
3 years ago
Which equation represents the volume of a cone with the same base and height as the cylinder below?
Firdavs [7]

Answer:

Volume of cone = (1/3) * Volume of cylinder

Step-by-step explanation:

Use the formulas

Volume of cone = (1/3)* π r^2 *h

Volume of cylinder =  π r^2 *h

Therefore

Volume of cone = (1/3) * Volume of cylinder

7 0
3 years ago
The speeds of vehicles traveling on a highway are normally distributed with an unkown population mean and standard deviation. A
Maksim231197 [3]

Answer:

The 90% confidence interval would be given by (60.09;69.91)    

We are 90% confident that the true mean for the speeds of vehicles traveling on a highway is between 60.09 and 69.91 miles per hour.

Step-by-step explanation:

1) Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X =65 represent the sample mean for the sample  

\mu population mean (variable of interest)

s=9 represent the sample standard deviation

n=11 represent the sample size  

2) Confidence interval

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:

df=n-1=11-1=10

Since the Confidence is 0.90 or 90%, the value of \alpha=0.1 and \alpha/2 =0.05, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.05,10)".And we see that t_{\alpha/2}=1.81

Now we have everything in order to replace into formula (1):

65-1.81\frac{9}{\sqrt{11}}=60.09    

65+1.81\frac{9}{\sqrt{11}}=69.91

So on this case the 90% confidence interval would be given by (60.09;69.91)    

We are 90% confident that the true mean for the speeds of vehicles traveling on a highway is between 60.09 and 69.91 miles per hour.

3 0
3 years ago
Other questions:
  • A sphere has a surface area of 200 square centimeters. Which choice is the best approximation of its diameter? Use 3.14 to appro
    7·2 answers
  • How to find the unknown variable of q-13=-13
    14·1 answer
  • What is the value of x if 5x+6<br>=8?​
    9·2 answers
  • Is 25 greater or less than -4(-4)?
    15·1 answer
  • HELP PLEASE
    13·1 answer
  • If the sales tax is six 3/4% what is the total cost of a $76.01 item
    11·1 answer
  • Grade 8 Math
    6·1 answer
  • I need help with this question
    14·1 answer
  • the low temperature in Archorage, Alaska one day was 9- degrees (Fahrenheit). On the same day, the low temp in flagstaff, Arizon
    10·2 answers
  • Triangle has a base of 14 in. and a height of 6 in.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!