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
Alexeev081 [22]
3 years ago
9

What is the value of x^3\cdot y^4x

Mathematics
2 answers:
Alex73 [517]3 years ago
6 0

Answer:

ITS 91

Step-by-step explanation:

KHAN SAYS SO

REY [17]3 years ago
4 0

Question:

What is the value of x^3\cdot y^{4x} when x=3 and y=0

Answer:

The answer is zero

Step-by-step explanation:

Given:

x = 3

y = 0

x^3\cdot y^{4x}

Solution:

Let us first substitute the given values inb the expression

then we get

(3)^3 \cdot (0)^{(4)(3)}

(3)^3 \cdot (0)^{12}

We also know that anything raised to the power of zero also give zero

then

(3\times 3 \times 3) \cdot 0

(27) \cdot 0

=> 0

You might be interested in
Jon invests $2300 at 7.5% annual interest, compounded continuously. How long will it take this money to double in value?
meriva
For it to double in value it would take 13 years and 4 months
7 0
3 years ago
It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 120 feet. A transportat
Mrrafil [7]

Answer:

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is equal to 120 or not, the system of hypothesis would be:  

Null hypothesis:\mu = 120  

Alternative hypothesis:\mu \neq 120  

Part 2

Calculate the statistic

We can replace in formula (1) the info given like this:  

z=\frac{114-120}{\frac{22}{\sqrt{36}}}=-1.636    

P-value

Since is a two sided test the p value would be:  

p_v =2*P(z  

Step-by-step explanation:

Data given and notation  

\bar X=114 represent the sample mean  

\sigma=22 represent the population standard deviation

n=36 sample size  

\mu_o =120 represent the value that we want to test

\alpha represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

Part 1

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is equal to 120 or not, the system of hypothesis would be:  

Null hypothesis:\mu = 120  

Alternative hypothesis:\mu \neq 120  

If we analyze the size for the sample is > 30 and we  know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}  (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Part 2

Calculate the statistic

We can replace in formula (1) the info given like this:  

z=\frac{114-120}{\frac{22}{\sqrt{36}}}=-1.636    

P-value

Since is a two sided test the p value would be:  

p_v =2*P(z  

8 0
3 years ago
At winds speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. Wind speeds below 100
alisha [4.7K]

Answer:

Lower limit = 1007.95 cm/s

Upper limit = 1142.05 cm/s

Step-by-step explanation:

We have to calculate a 95% CI with population's standard deviation known.

The sample is size n=60, with mean M=1075.

The confidence interval can be expressed as:

M-z*\sigma/\sqrt{n} \leq\mu\leq M+z*\sigma/\sqrt{n}

For a 95% CI, the value of z=1.96.

1075-1.96*265/\sqrt{60} \leq\mu\leq 1075+1.96*265/\sqrt{60} \\\\1075-67.05 \leq\mu\leq 1075+67.05\\\\ 1007.95 \leq\mu\leq 1142.05

8 0
3 years ago
What is DC if AC = 10 cm, BC = 6 cm, and EC = 12 cm? using the options below
NNADVOKAT [17]
The answer is A. Or 5 cm.

Hope this helps,

kwrob
8 0
3 years ago
Read 2 more answers
Andrea's Sequoia gets 12 miles per gallon while driving in the city, and 20 miles per gallon while on the highway. The last time
Oxana [17]

Answer:

60miles

Step-by-step explanation:

if they drove x miles in the city and y miles on the highway then you know that

x + y = 280

x/12 + y/20 = 16

x + 12y/20 = 16*12 = 192

8y/20 = 88

y = 220

x = 280-y = 280-220 = 60

4 0
2 years ago
Other questions:
  • Help with attachment below
    14·1 answer
  • 9-3÷1/3+1=<br><br> PLEASE HELP!!
    10·2 answers
  • A tea that is 20% jasmine is blended with a tea that is 15% jasmine. How many pounds of each tea are used to make 5lb of tea tha
    7·1 answer
  • Please help asap!<br><br>the problem is in the picture
    7·1 answer
  • Ive been looking at this for a long time please help.
    10·1 answer
  • A student is asked to find the length of the hypotenuse of a right triangle. The length of one leg is 38 ​centimeters, and the l
    12·1 answer
  • plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help plz help pl
    7·1 answer
  • First to answer gets brainliest
    12·1 answer
  • 3(y+2/5)=-1/5 What’s y? please help asap!!
    7·1 answer
  • Order the numbers from least to greatest 0.607, 607, 6.07, 60.7
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!