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
ella [17]
2 years ago
8

HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Radda [10]2 years ago
6 0
This is what the diagram is saying
(-4)+(-9)= -13
You might be interested in
mr wicks designs houses.he uses grid paper to plan a new house design.the kitchen will have and are between 70 square feet and 8
exis [7]
Well we can't draw on brainly so no.
4 0
3 years ago
5 to the second power minus two (4-1)
PilotLPTM [1.2K]

Answer:

23

Step-by-step explanation: You have to do 5x5 because 5^2 mans there is two fives. Then you just subtract two

5x5=25

25-2=23

8 0
3 years ago
A null hypothesis is that the mean nose lengths of men and women are the same. The alternative hypothesis is that men have a lon
algol [13]

Answer:

b. There is not enough evidence to say that the populations of men and women have different mean nose lengths.

See explanation below.

Step-by-step explanation:

Develop the null and alternative hypotheses for this study?

We need to conduct a hypothesis in order to check if the means for the two groups are different (men have longer mean nose length than women), the system of hypothesis would be:

Null hypothesis:\mu_{men} \leq \mu_{women}

Alternative hypothesis:\mu_{men} > \mu_{women}

Assuming that we know the population deviations for each group, for this case is better apply a z test to compare means, and the statistic is given by:

z=\frac{\bar X_{men}-\bar X_{women}}{\sqrt{\frac{\sigma^2_{men}}{n_{men}}+\frac{\sigma^2_{women}}{n_{women}}}} (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.

Let's assume that the calculated statistic is z_{calc}

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

p_v =P(Z>z_{calc})=0.225

And we know that the p value is 0.225. If we select a significance level for example 0.05 or 0.1 we see that p_v >\alpha

And on this case we have enough evidence to FAIl to reject the null hypothesis that the means are equal. So then the best conclusion would be:

b. There is not enough evidence to say that the populations of men and women have different mean nose lengths.

8 0
3 years ago
Find the total surface area of the<br> following cylinder:<br> r= 5 cm<br> 5 cm<br> SA = [? ]ī cm2
Hatshy [7]

Answer:

Surface area = 2πrh + 2πr^2

= (2 × 22/7 × 5 ×5 + 2×22/7×25)cm^2

= (1100/7+1100/7)cm^2

= 2200/7 = 314.28571) cm^2 (ans)

Hope it helps

4 0
2 years ago
Read 2 more answers
∆ABC has the points A(1, 7), B(-2, 2), and C(4, 2) as its vertices.
Lesechka [4]
1. D 6
2. B isosceles
3. C right scalene
4. B 5

3 0
3 years ago
Other questions:
  • Every morning Halle goes to school with a 1 liter bottle of water. She drinks 1/4 of the bottle before school starts and 2/3 of
    9·2 answers
  • In the rectangle below AC has a length of 28. What is the length of ED? If necessary, round your answer to two decimals places.
    15·2 answers
  • Aki is rolling two 4-sided dice (each die has the digits 1-4 on it) and finding the sum of the
    8·1 answer
  • Find the equation for the line that passes through the point (2,2), and that is parallel to the line with the equation y=3/4x-4
    6·1 answer
  • What am I doing wrong?
    6·1 answer
  • What is the value of g?<br><br><br><br> 2/5(g−7)=3
    10·2 answers
  • You start at (-1, 2). You move right 5 units and down 6 units. Where do you end?
    8·1 answer
  • A petting zoo gives out large buckets of healthy popcorn snacks for visitors to feed to the animals. what fraction of the snack
    5·2 answers
  • Which transformations could have occurred to map
    13·1 answer
  • What is the formula to find the velocity of a given object​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!