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
Zepler [3.9K]
3 years ago
11

Help with math please

Mathematics
1 answer:
JulijaS [17]3 years ago
5 0
You can first multiply your coefficients (7x9), which gives you 63. You can then simplify the exponents by using the rule that when two terms with the same variable are being multiplied, you can simplify by adding exponents. Since 7+3= 10, your simplified answer would be 63x^10 :) hope it helped!
You might be interested in
Pat is a 23-year-old man. He earns a taxable income of $70,000.00, and the effective
Studentka2010 [4]

Answer:

$12,594.71

Step-by-step explanation:

i just did the test

6 0
3 years ago
Help fast will mark you the brainlest
zmey [24]

Answer:

55°

Step-by-step explanation:

x°+35° is a right angle

so x°+35°= 90°

then : x° = 90°-35° = 55°

8 0
3 years ago
Read 2 more answers
What is the slope of the line represented by the equation y = -1/2x + 1/4
liubo4ka [24]

Answer:

The slope is -1/2 and the y intercept is 1/4

Step-by-step explanation:

y = -1/2x + 1/4

This equation is in slope intercept form

y = mx+b where m is the slope and the y intercept is b

The slope is -1/2 and the y intercept is 1/4

8 0
3 years ago
The proprietor of a boutique in New York wanted to determine the average age of his customers. A random sample of 25 customers r
jolli1 [7]

Answer:

28-2.064\frac{10}{\sqrt{25}}=23.872    

28+2.064\frac{10}{\sqrt{25}}=32.128    

So on this case the 95% confidence interval would be given by (23.9;32.1)  

Step-by-step explanation:

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=28 represent the sample mean

\mu population mean (variable of interest)

s=10 represent the sample standard deviation

n=25 represent the sample size  

Solution to the problem

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=25-1=24

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.025,24)".And we see that t_{\alpha/2}=2.064

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

28-2.064\frac{10}{\sqrt{25}}=23.872    

28+2.064\frac{10}{\sqrt{25}}=32.128    

So on this case the 95% confidence interval would be given by (23.9;32.1)    

7 0
3 years ago
What is 7539 increased by 3200
Tanya [424]
Subtract thats how you get it
5 0
3 years ago
Read 2 more answers
Other questions:
  • 3/4 = what number over 20? Trying to find the Equivalent Fraction
    9·2 answers
  • What is an exponent that has a value between 0 and 1?
    12·1 answer
  • Make a conjecture: How many solutions does a quartic equation x4 + ax3 + bx2 + cx + d = 0 have? Explain.
    8·1 answer
  • Subtract.<br> (9x² + 5x² + 5x – 3) - (8x - 2)
    7·1 answer
  • What is the slope of the line? A.1 /13 B. 3/11 C.-3/11 D.-11/3
    5·1 answer
  • What is the opposite value of 4?
    12·2 answers
  • The speed of a river current is 3 mph. If a boat travels 30 miles downstream in the same time that it takes to travel 20 miles u
    13·1 answer
  • What is the value of x in the figure shown below
    13·1 answer
  • First, find the area of each rectangle. 3×5 1/6
    15·1 answer
  • It is known that 10% of the 9-year old children in a town have three siblings. Fifteen 9-year old children are selected at rando
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!