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
Sidana [21]
3 years ago
10

Help me i will give you 50 points

Mathematics
2 answers:
puteri [66]3 years ago
6 0
Hello,


1)   C
2)  A
3)   D
4)  B
jeyben [28]3 years ago
5 0
1)  (f + g)(2) = 7 + 3 = 10  The answer   is C

2) (f - g)(4) = 11 - 15 = -4   The answer is A

3)  f(1) = 2(1) + 3 = 5             g(1) = 1² - 1 = 0 The answer is D

4) (f xg ) (1)  = 7/3 The answer is B
   

You might be interested in
5 1/5 + 4 3/5 please help
True [87]

Answer:

9 4/5

Step-by-step explanation:

5 1/5+4 3/5

26/5+23/5

lcm of the denominator is 5

26+23 everything all over 5

49/5

9 4/5

8 0
3 years ago
Read 2 more answers
News article reports that "Americans have differing views on two potentially inconvenient and invasive practices that airports c
OverLord2011 [107]

Answer:

1) p1=0.83

2) p2=0.81

3) Option B

4) p=0.82

5) s=0.03

6) z=0.67

7) P=0.50

8) Do not reject H0

Step-by-step explanation:

1) The proportion of Republicans who think the full-body scans should be applied in airports is equal to the ratio between the republicans that think it should over the total Republicans in the poll:

p=X/n=258/311=0.83

2) The proportion of Democrats who think the full-body scans should be applied in airports is equal to:

p=X/n=294/363=0.81

3) As we want to know if there is a difference in the proportions calculated, not if one is higher or lower than the other, the correct option is B:

H_0:p_1-p_2=0\\\\H_a:p_1-p_2\neq0

4) The pooled estimate of a proportion is the average of both proportions:

\bar{p}=\frac{p_1+p_2}{2}= \frac{0.83+0.81}{2}=0.82

5) The standard error can be calculated as:

s=\sqrt{\frac{\bar{p}(1-\bar{p})}{n_1} +\frac{\bar{p}(1-\bar{p})}{n_2}} \\\\s=\sqrt{\frac{0.82*0.18}{311} +\frac{0.82*0.18}{363}} \\\\s=\sqrt{0.00047+0.00041} =\sqrt{0.00088}=0.03

6) The z-statistic can be calculated as:

z=\frac{p_1-p_2}{s}=\frac{0.83-0.81}{0.03}=\frac{0.02}{0.03}=0.67

7) The P-value for z=0.67 is P=0.50 (from the standard normal distribution table).

2P(Z>|z|)=0.50286

8) If the significance level is 0.01, the P-value is bigger than the significance level. The effect is not significanct. The null hypothesis is not rejected.

There is not enough evidence to say that both proportions are different.

A. Do not reject H0

8 0
3 years ago
Jessie is playing a game and bets $5 on the come out roll. If a 7 or 11 is rolled, she wins $5. This happens with a probability
anzhelika [568]

Answer:

.

Step-by-step explanation:

8 0
3 years ago
Plz answer last question and im lost!
harkovskaia [24]

Answer:

\pi radian

Step-by-step explanation:

We know that angle for a full circle is 2\pi

In the given figure shape is semicircle

hence,

angle for semicircle will be half of angle of full circle

thus, angle for given figure = half of  angle for a full circle = 1/2 * 2\pi = \pi

Thus, answer is \pi radian

alternatively, we also know that angle for a straight line is 180 degrees

and 180 degrees is same as \pi radian.

6 0
3 years ago
If 25% more than a number is 325 what is 20% less than the number
Verdich [7]
Let the number be x.  Then 1.25x = 325, or x = 260.  

20% less than 260 is 0.80(260) = 208
7 0
3 years ago
Other questions:
  • Solve 2x+y=2x please answer for me
    7·1 answer
  • Convert 42,670,000 into an estimated power of 10
    13·1 answer
  • The height above the surface of the Earth​ (in meters) of a rock thrown into the air at 10​ m/s after x seconds is given by f(x)
    6·2 answers
  • Use the distributive property to write two expressions that are equivalent to 12 +30x. Describe the steps you followed​
    11·1 answer
  • Solving Systems of Linear Equations by Graphing 10 POINTS!!!!!!!!!! Its not much but I just help not for points are u the same!
    13·1 answer
  • Solve the inequality and graph its solution...<br> 2x+4≥24
    7·2 answers
  • A 3.4 metre ladder is leaning against a wall. The bottom of the ladder is 1.5m from the wall. Determine the angle formed between
    12·1 answer
  • 40 Points!! Plz Help!!!
    9·1 answer
  • Please explain dis ahhhhhhhhhhhhh
    7·2 answers
  • Urve revolves around the x-axis. if you cannot evaluate the integral exactly, use your calculator to approximate it. (round your
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!