6,964 Answered Questions for the topic mathematics

Mathematics Math Algebra 2 Probability

07/10/21

Using x = 1 to represent the year 1986 and y to represent the number of new stores, write the exponential equation for these data. Round all values to the nearest thousandth.

The accompanying table shows the number of new stores in a coffee shop chain that opened during the years 1986 through 1994.   Year      Number of... more
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Mathematics Math Algebra 2 Statistics

07/10/21

Beth’s scores on the six Earth science tests she took this semester are: 100, 95, 55, 85, 75, 100 For this population, how many scores are within one standard deviation of the mean?
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Mathematics Math Algebra 2 Probability

07/10/21

You take true/false test that has 60 questions.If you guess on each question, and have the same chance of guessing correct on each question, what is probability to get atleast 65% of questions correct
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Mathematics Math Algebra 2 Probability

07/10/21

Determine the probability of landing on tails at most 33 times if you flip a fair coin 80 times. Round your answer to the nearest tenth.
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Mathematics Math Calculus Sequence

07/10/21

Series and sequences
Suppose that (b_n) is a sequence of real numbers such that:(b_n) = (17, -21, 4, -2, 1...) and lim of b_n as n approaches ∞ equals 4Find s = ∞ ∑ n=1 (b_(n+1) − b_(n))If the series does not converge,... more
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Mathematics

07/08/21

Problem Solving

Dear Wyzant,I am confused about the question it says that A 6-inch personal pizza has 630 calories, with 240 of those from fat. A 14-inch pizza is cut into 8 slices. Estimate the number of calories... more
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Mathematics Math Algebra 1 Algebra 2

07/08/21

(a) Evaluate cosec^-1(√2) (b) Evaluate tan^-1(sin(-π/2))
There are two problems.First one is Evaluate cosec^-1(√2)And second one is Evaluate tan^-1(sin(-π/2))Kindly solve this question.
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Mathematics Algebra 1 Sat Math Algebra

07/08/21

Find all the values of x, in between the range [0,2π] for the following equation. 2sin(3x)+3cos(3x)=0
The equation is, 2sin(3x)+3cos(3x)=0.
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Mathematics Math Algebra 1 Algebra

07/08/21

Find the value of sin(sin^-1(4/5)+tan^-1(5/12)) without using calculator.Use angle sum or different identities.

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Mathematics Algebra 1 Algebra

07/08/21

Prove the following triginmetric identity (√1-cosx/√1+cosx)= cosecx - cotx
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Mathematics Math Algebra 1 Algebra 2

07/07/21

(2B.16) If an = n(n+2), what is a9? 20 99 108 120
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Mathematics Math Algebra 1 Algebra 2

07/07/21

What are the first four terms of the sequence shown below? an = 5n ‒ 1 A. ‒1, 4, 9, 14 B. 4, 9, 14, 19 C. 5, 6, 7, 8 D. 6, 11, 16, 21
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Mathematics

07/07/21

A company's sales in Seattle were $410,000 in 2012, while their sales in Portland were $270,000 for the same year.
a. Seattle's sales were % larger than Portland's.b. Portland sales were % smaller than Seattle's.c. Portland sales were % of Seattle's.
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Mathematics Math Algebra 1 Algebra 2

07/07/21

(2B.14) If a1 = 5 and r = ‒3, write the first four terms of the geometric sequence. A. 5, 15, 45, 135 B. 5, ‒15, 45, ‒135 C. 5, ‒10, 15, ‒20 D.

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Mathematics Math Algebra 1 Algebra 2

07/07/21

(2B.2) Write the first four terms of an arithmetic sequence whose first term is ‒14 and whose common difference is 10. A. ‒14, ‒ 4, 6, 16 B. 10, 14, 18, 22 C.‒14, ‒24, ‒34, ‒44 D.‒14, ‒10, ‒6, ‒2
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Mathematics

07/05/21

Math proportions

A machine in a factory produces 540 units each hour. How many units does the machine produce per minute ?
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Mathematics Statistics

07/03/21

Please help me solve this question.
Packets of fish food have weights that are distributed with standard deviation 2.3 g. A random sample of 200 packets is taken. The mean weight of this sample is found to be 99.2 g. Calculate a 99%... more
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Mathematics Statistics

07/03/21

Please help me solve this question.
The result of a fitness trial is a random variable X which is normally distributed with mean µ and standard deviation 2.4 . A researcher uses the results from a random sample of 90 trials to... more
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Mathematics Statistics Maths

07/03/21

Help me solve this question please.

The heights of male students in a college are thought to be normally distributed with mean 170 cm and standard deviation 7.The heights of 5 male students from this college are measured and the... more
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Mathematics Statistics Regression

07/03/21

Any help for this question please?
The following table shows the hours of sunshine, x, during nine days in August and the number of ice creams, y, sold by a beach shop in... more
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Mathematics Calculus

07/01/21

For what value of the constant a will the system of linear equations
6x -5y = 33x + ay =1
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Mathematics Math

07/01/21

A builder takes ¾ of an hour to lay 50 tiles. a. How many tiles can he lay in 4 ½ hours? b. If he works 6 ¾ hours a day, five times a week, how many tiles can he lay that week?
Can anyone help? please
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Mathematics Math Elementary Math

06/30/21

If 7 times a number decreased by 12 is 18 more than five times that number, find the number
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Mathematics Math Calculus Precalculus

06/30/21

The step by step process of the given.
Answer must be in EXACT form only. Determine the area common to r= 3+3 sin θ and r=3.
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Mathematics Math Calculus

06/30/21

Given vectors, compute the step by step process of the given.
Given vectors vecU=(-2,5,-4), vecV=(1,-6,3) and vecW=(2,3,1), compute the given:‖2vecU+3vecV-4vecW‖
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