 1,633 Answered Questions for the topic Maths

19h

#### While proving the continuity of function f(x)=sin(x) or f(x)=cos(x) why do we put sin(c+h) or cos(c+h) in place of x ? Please explain

Example: Lim f(x) = Lim [sin x] = Lim [sin (c+h)] X tends to 0

2d

#### use the vertex (h, k) and a point on the graph (x, y) to find the general form of the equation of the quadratic function

(h, k) = (3, 2), (x, y) = (10, 1)

2d

#### How long does it take to reach maximum height

A ball is thrown in the air from the top of a building. Its height, in meters above ground, as a function of time, in seconds, is given by h(t) = −4.9t^2 + 24t + 8. How long does it take to reach... more

4d

#### Which quadrant does θ lie in?

Which quadrant does θ lie in?csc(θ)< 0 and sec(θ)>0
Maths Math Sat Math

6d

In a candy bag there are 50 candy cars, white, green and pink. You take two. How many candy cars of the different colors are there if the probability of taking two green cars with return is 0.25... more
Maths Math Sat Math

7d

#### Who has the greatest chance of winning?

In the ironing tip, you must bet the result 1, X or 2 in 13 matches. We assume that there is an equal probability for each event to occur.a) Niki bets a row with only one and Lucas bets every third... more
Maths Geometry

10d

#### Geometry, working out a

If i have a triangle with one interior angle saying “2a°” and one saying “3a°” with the third interior angle not having any clue. Considering its multiple choice between 36,22.5,25.7 +45 what does... more

14d

#### Limit x approaches to pi

Maths Math Geometry

22d

#### find the coordinates of the point 3/10 of the way from a to b a=(-4,-5) b=(11,4)

Maths Math Geometry

22d

08/01/20

#### Error Calculation of a expression

How do we calculate the(i) absolute error(ii) relative error(iii) percentage error, of the formula, ((y)^(1/2)) + (x/y) + (x*(e^(2x)))if the values of x=0.906 , y=1.036, where the values are... more
Maths Math Sat Math

07/30/20

Susan deposited \$4000 into an account with 3.6% interest, compounded monthly. Assuming that no withdrawals are made, how much will she have in the account after 5 years?Do not round any... more
Maths

07/28/20

#### jess has a 4-digit password for her mobile phone. each digit can be between 0 and 9 inclusive. what are the total number of 4-digit passwords Jess can create?

i know the answer as it was at the back of the textbook but i dont understand how the answer is 10000, how do you work out this question???
Maths Math Calculus

07/26/20

#### Series Expansion of Cos(x) centered at x=0

Considering first six terms in the series expansion of cos x, calculate the approximatevalue of the cos x , centered at x=0.Discuss the types of errors are in this calculation.
Maths Statistics

07/22/20

#### Calculate i. Mean ii. Median iii. Modal Class iv. Standard Deviation

The mark students of grade 10 students got in their biology examination is given below Marks (%) Frequency 40-49 3 50-59 5 60-69 7 70-79 6 80-89 12 90-100 7 Calculatei.... more
Maths Math English

07/20/20

In my bag 1/3 of the quarters is the same as 2/5 of the dimes. I have 8 more quarters than dimes. How many coins do i have

07/18/20

#### maths, find two algebraic methods

Four cousins who share the same birthday, David, Frederica, Mary and Laurent each receive a fish tank as a birthday present that contain two types of fish, swordtails and angelfish. There is a... more
Maths

07/16/20

#### How fast is the distance between the runner and the trainer increasing when the runner has run 1/4 of the way around the track?

A runner and his trainer are standing together on a circular tracks of radius 100 meters.when the trainer gives a signal, the runner starts to run around the track at a speed of 10 m/s. How fast is... more
Maths Geometry Ratio

07/12/20

#### Two bottles are geometrically similar. The ratio of the areas of their bases is 1:4

Two bottles are geometrically similar. The ratio of the areas of their bases is 1:4.Write down the ratios of their height and volumes

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