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
Anastasy [175]
3 years ago
11

Help on this please i need help so much

Mathematics
2 answers:
attashe74 [19]3 years ago
7 0
The correct answer for each is
a= 390.8
b= 136.8
mariarad [96]3 years ago
4 0
The first one is 391
The second one is 109
Brainliest please:)
You might be interested in
The length of a picture frame is 8 inches more than the width. For what
leva [86]

Answer:

For, "x" greater than 34, the perimeter of the picture frame greater than 152 inches

Solution:

Let "x" be the width of the frame

Given that, The length of a picture frame is 8 inches more than the width

Therefore,

Length = width + 8

Length = x + 8

The perimeter of rectangle is given by formula:

Perimeter = 2(length + width)

Substituting the values we get,

Perimeter = 2(x + 8 + x)

Perimeter = 2(2x + 8)

Perimeter = 4x + 16

The perimeter of the picture frame greater than 152 inches

Perimeter > 152

Therefore, for, "x" greater than 34, the perimeter of the picture frame greater than 152 inches

Step-by-step explanation:

search it up

7 0
3 years ago
Read 2 more answers
The National Transportation Safety Board publishes statistics on the number of automobile crashes that people in various age gro
ra1l [238]

Answer:

a) Null hypothesis:p\leq 0.12  

Alternative hypothesis:p > 0.12  

b) z_{\alpha}=1.64

c) z=\frac{0.134 -0.12}{\sqrt{\frac{0.12(1-0.12)}{1000}}}=1.362  

d) p_v =P(z>1.362)=0.0866  

e) For this case since the statistic is lower than the critical value and the p value higher than the significance level we have enough evidence to FAIL to reject the null hypothesis so then we don't have information to conclude that the true proportion is higher than 0.12

Step-by-step explanation:

Information given

n=1000 represent the random sample selected

X=134 represent the number of young drivers ages 18 – 24 that had an accident

\hat p=\frac{134}{1000}=0.134 estimated proportion of young drivers ages 18 – 24 that had an accident

p_o=0.12 is the value that we want to verify

\alpha=0.05 represent the significance level

Confidence=95% or 0.95

z would represent the statistic

p_v{/tex} represent the p valuePart aWe want to verify if the population proportion of young drivers, ages 18 – 24, having accidents is greater than 12%:  Null hypothesis:[tex]p\leq 0.12  

Alternative hypothesis:p > 0.12  

The statistic would be given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Part b

For this case since we are conducting a right tailed test we need to find a critical value in the normal standard distribution who accumulates 0.05 of the area in the right and we got:

z_{\alpha}=1.64

Part c

For this case the statistic would be given by:

z=\frac{0.134 -0.12}{\sqrt{\frac{0.12(1-0.12)}{1000}}}=1.362  

Part d

The p value can be calculated with the following probability:

p_v =P(z>1.362)=0.0866  

Part e

For this case since the statistic is lower than the critical value and the p value higher than the significance level we have enough evidence to FAIL to reject the null hypothesis so then we don't have information to conclude that the true proportion is higher than 0.12

8 0
2 years ago
Use a calculator to find each answer. Round to the nearest tenth.
Harrizon [31]
7623, 27.8, 76.9, and 8401 it is really simple just use a calculator........
5 0
3 years ago
Find an explicit formula for the arithmetic sequence -2,-14,-26,-38,...
slava [35]

Answer:

-12

Step-by-step explanation:

We can just try and find what works! since we can subtract 12 from -2 and get -14, we might try subtracting 12 every time. After we test it out, we see that is is correct!

6 0
3 years ago
Tell if the ordered pair is a solution of the system of inequalities.
ale4655 [162]

Answer:

top one yes, bottom one no

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • The vertices of / are G(–4, 0), H(5, 2), and I(–2, –3). / is rotated 270° counterclockwise about the origin to form /. What are
    11·1 answer
  • The drama club spent $8.50 per person on food for a cast party. The total cost of the food was $229.50. How many people were at
    10·2 answers
  • Find the slope of a line through each pair (8,10),(-7,14)
    10·1 answer
  • What is two thirds takeaway a half?
    15·1 answer
  • X = y2 - 1
    14·1 answer
  • What is the value of t? ​
    7·1 answer
  • Amber believes triangle ABC and triangle GFE are congruent. She has recorded the measures of some of the angles and the lengths
    12·1 answer
  • Lukas is trying to lose weight. He starts the year
    10·2 answers
  • Write the given linear system in matrix form. Assume X = x y z . dx dt = −3x + 6y − 9z dy dt = 7x − y dz dt = 10x + 6y + 3z
    14·1 answer
  • REAl picture in side sorry!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!