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
kenny6666 [7]
3 years ago
13

Find the value of x for the right triangle. 45° х 10

Mathematics
2 answers:
melisa1 [442]3 years ago
4 0

Answer:

14.14

Step-by-step explanation:

sin(45)=10/x. <--fraction

then solve for x you should get this

x=10/sin(45)

and that should equal

14.14213562

Anastaziya [24]3 years ago
3 0

10 × radical 2

.........................

You might be interested in
If the volume of the cube was 27 (each side length is 3 units), what would the new volume be if each side length of the cube was
Nat2105 [25]

clapped

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
A random sample of 100 people from City A has an average IQ of 120 with a SD of 18. Independently of this, a random sample of 15
Sloan [31]

Answer:

z=\frac{(120-116)-0}{\sqrt{\frac{18^2}{100}+\frac{15^2}{150}}}}=1.837

p_v =P(z>1.837)=1-P(Z  

Comparing the p value with a significance level for example \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can say that the average IQ on city A is signficantly higher than city B at 5% of singificance.  

Step-by-step explanation:

\bar X_{A}=120 represent the mean for sample 1

\bar X_{B}=116 represent the mean for sample 2

s_{A}=18 represent the sample standard deviation for 1  

s_{B}=15 represent the sample standard deviation for 2  

n_{A}=100 sample size for the group 2  

n_{B}=150 sample size for the group 2  

\alpha Significance level provided

z would represent the statistic (variable of interest)  

Concepts and formulas to use  

We need to conduct a hypothesis in order to check if residents of City A smarter on average, the system of hypothesis would be:  

Null hypothesis:\mu_{A}-\mu_{B}\leq 0  

Alternative hypothesis:\mu_{A} - \mu_{B}> 0  

We don't have the population standard deviation's, but the sample sizes are large enough we can apply a z test to compare means, and the statistic is given by:  

z=\frac{(\bar X_{A}-\bar X_{B})-\Delta}{\sqrt{\frac{s^2_{A}}{n_{A}}+\frac{s^2_{B}}{n_{B}}}} (1)

z-test: Is used to compare group means. Is one of the most common tests and is used to determine whether the means of two groups are equal to each other.

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

z=\frac{(120-116)-0}{\sqrt{\frac{18^2}{100}+\frac{15^2}{150}}}}=1.837

P value

Since is a one right tailed test the p value would be:  

p_v =P(z>1.837)=1-P(Z  

Comparing the p value with a significance level for example \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, and we can say that the average IQ on city A is signficantly higher than city B at 5% of singificance.  

5 0
3 years ago
A sauce recipe uses 4 cans of tomatoes in every 2/12 quarts. How many cans of tomatoes are used in each quart of the sauce?
My name is Ann [436]
4/12 quarts 
hope this helps
7 0
3 years ago
Write 26 3/4 as a decimal number
siniylev [52]

Answer:

26 3/4 as a decimal would be 26.75

3 0
3 years ago
Read 2 more answers
The weight of people in a small town in missouri is known to be normally distributed with a mean of 154 pounds and a standard de
ad-work [718]
If a random sample of 20 persons weighed 3,460, the sample mean x-bar would be 3460/20 = 173 pounds.
The z-score for 173 pounds is given by:
z=\frac{173-154}{29}=0.655
Referring to a standard normal distribution table, and using z = 0.66, we find:
P(\bar x\ \textless \ 173)=0.7454
Therefore
P(\bar x\ \textgreater \ 173)=1-0.7454=0.2546
The answer is: 0.2546

4 0
3 years ago
Other questions:
  • Suppose you are using α = 0.05 to test the claim that μ &gt; 23 using a p-value. you are given the sample statistics , and find
    7·1 answer
  • What is a integer????
    7·2 answers
  • Jodie ran at an average speed of 9 km/h for 40 minutes. How far did she run in km?
    7·2 answers
  • there are 18 girls and 40 boys in the library. 5/9 of the girls are 3/8 of the boys are reading, how many children are reading
    12·2 answers
  • Amy's age plus Betty's age is 29 years. Amy's plus Carl's age is 27 years. Betty's plus Carl's age is 22 years. What is the diff
    5·1 answer
  • Solve for the red variable
    15·1 answer
  • A graph of a system of two linear equations that have different slopes have how many solutions
    7·2 answers
  • I need help on this problem<br><br> -10.7 + (-19.26)<br><br> (I have to show my work btw)
    6·1 answer
  • Solve the inequality x^3+4x&gt;5x^2 please show steps and interval notation. thank you.​
    9·1 answer
  • What are the rules to remember while working with Proportional Relationships?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!