MATHEMATICS COLLEGE

I thought of a number. This number double is 7 less than 29. What is my number? hurry please

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

Let x be your number

Is means equals

2x = 29-7

2x= 22

2x/2 = 22/2

x =11

Answer 2

Answer:

Answer:

Step-by-step explanation:

11*2=22

29-7 =22

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A) Kenyans went elections and they had to choose between three coalitions; JubileeCord and Amani. They must choose one, if they have no preference, can chooseall the three or, if against one option, they choose for the two they prefer. Asample of 200 voters revealed the following information30 chose Jubilee and Amani but not Cord130 chose Cord only102 chose Amani only30 chose Jubilee and Cord234 chose for either Jubilee or Cord, or both Jubilee and Cord, but not Amani256 chose for either Cord or Amani, or both Cord and Amani, but not JubileeHowmanystudents chosei) All the three options(2 marksii) Only one option(2 marksiii) Jubilee irrespective of Cord or Amani(2 marks
A bacteria culture starts with 900 bacteria and doubles in size every half hour.(a) How many bacteria are there after 4 hours? (b) How many bacteria are there after t hours? (c) How many bacteria are there after 40 minutes? (Round your answer to the nearest whole number.) (d) Graph the population function and estimate the time for the population to reach 40,000. (Give your answer to the nearest tenth.)
A pharmaceutical manufacturer is concerned that the impurity concentration in pills should not exceed 3%. It is known that from a particular production run impurity concentrations follow a normal distribution with a standard deviation of 0.4%. A random sample of 64 pills from a production run was checked, and the sample mean impurity concentration was found to be 3.07%. Testing at the 5% level the null hypothesis that the population mean impurity concentration is 3% against the alternative that it is more than 3%.a. Calculate the p-value for this test.b. Find the p-value for this test and draw your conclusion.c. Suppose that the alternative hypothesis in part b had been two-sided rather than one-sided. Conduct your test using either the critical value or the p-value approach.

A regular polygon has an interior angle of 172º.
Find the number of sides of this polygon.

Answers

Answer:

45 sides

Step-by-step explanation:

If each of the interior angles is 172 degrees, then each of the exterior angles is 8 degrees. Since the sum of the exterior angles of any polygon is 360 degrees, there are 360 / 8 = 45 exterior angles and 45 sides.

What is the answers help me please part A B CGiving extra points

Correct answer

Answers

Answer:

A, 38, 40

Step-by-step explanation:

a. A has to be the first graph because it starts at $ 25 and it rises as more work needs to get done

b.if you go from 50 up until you get to the line, then look left at the axis is about $38

c. C=25+s*0.25, substitute c=35 and find s

35=25+s*0.25 subtreact 25 from both sides

35-25= s*0.25

10=s*0.25 divide both sides by 0.25

10/0.25=s

40=s

Please help! If it is right I will mark it brainliest!!!!A ball is thrown upward from the top of a building. The function below shows the height of the ball in relation to sea level, f(t), in feet, at different times, t, in seconds: f(t) = −16t2 + 48t + 160 The average rate of change of f(t) from t = 3 seconds to t = 5 seconds is feet per second.

Answers

the answer is -80 :)

The answer is -80. I just finished taking this test and this question was right.

Find the following for the function f(x) = 3x2 + 4x - 4.(a) f(0)
(e) - f(x)
(b) f(3)
(f) f(x+3)
(c) f(-3)
(g) f(3x)
(d) f(-x)
(h) f(x+h)
(a) f(0) = (Simplify your answer.)
(b) f(3) = (Simplify your answer.)
(c) f(-3)=(Simplify your answer.)

Answers

Answer:

f(0)=2

f(3)=14

Cuánto le falta a 3/5para llegar a 9/10

Answers

Answer:

3/10

Step-by-step explanation:

3/5 se puede convertir en 6/10

(3x2)/(5x2).

9/10 - 6/10 = 3/10

le falta 3/10 para llegar a 9/10.

A school psychologist wants to test the effectiveness of a new method of teaching Health. She recruits 600 fourth-grade students and randomly divides them into thw groups. Group 1 is taught by means of the new method, while Group 2 ls taught via traditional methods. The same teacher is assigned to teach both groups. Al the end of the year, an achievement test is administered and the results of the two groups compared ts What is the response variable in this experiment?O A. The score on the achievement test
O B. The students' ability in Health °
C.The score of Group 2 on the achievement test
O D. The score of Group 1 on the achievement test

Answers

Answer:

The correct answer is:

The score on the achievement test (A)

Step-by-step explanation:

Please note that the terms "response variable" can be used instead of "dependent variable", and the dependent variable is a variable whose outcome is as a result of the change in the independent variable. It is the variable that the experimenter sets out to study in an experiment.

In this example, the score of the achievement test is a measure that tells of how effective the teaching method was on the selected group, and this is the dependent variable because it completely depends on the teaching method employed.

Please note that the dependent variable is another kind of variable and it is one that is completely under the control of the experimenter. In this case, the teaching method is the dependent variable.

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Li enters a competition to guess how many jelly beans are in a jar.Li’s guess is 345 jelly beans.The actual number of jelly beans is 300.What is the percent error of Li’s guess?