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maths
Questions (112)
(a) Find the indefinite integrals of the following functions.
(i) f (t) = 6 cos(3t) + 5e^−10t (ii) g(x) = 21-12x^3/ x (x > 0)
1 answer
607 views
are all regular hexagons similar?
how can i explain?
3 answers
442 views
given that a/b=c/d, decide whether it is true or not that a/c=b/d.
and how can i explain my reasoning?
3 answers
360 views
A study of motor vehicle rates in the 50 states reveals
that traffic death rates (deaths per 100 million motor vehicle miles
2 answers
498 views
a) find the equation of AB, the perpindicular bisector of the line joining the points P(-3,1) and Q(1,9)
(line AB intersects the
1 answer
428 views
a) find the equation of AB, the perpindicular bisector of the line joining the points P(-3,1) and Q(1,9)
(line AB intersects the
1 answer
520 views
There are N ordered integer quadruples (a,b,c,d) subject to 0≤a,b,c,d≤99990 such that ad−bc≡1(mod99991). What are the
1 answer
310 views
f(x)=x ^2 +bx+c , b and c real .Find the minimum of (max|f(x)|)for x∈[−10,10]?
3 answers
923 views
Find the smallest n such that for any prime p, at least 20 numbers 1,2, ..., n are quadratic residues not modulo p.
k is
1 answer
432 views
Suppose p(x)=ax^2+bx+c is a quadratic polynomial with real coefficients and |p(x)|≤1 for 0≤x≤1. Find the largest possible
1 answer
449 views
The efficiency of a machine is in general defined as the ratio between useful (released) energy and the input energy. Therefore,
2 answers
608 views
A subset S of {1,2,…,n} is said to be packed if whenever i,j∈S the number ⌊(i+j)/2⌋ is also in S. Determine how many
1 answer
417 views
A factory produces two products A and B using raw materials p and q. It uses 3 units of p and 1 unit of q to produce one unit of
2 answers
502 views
Alice has 4 times as much money as Benny. If Benny has $36 less than Alice, how much money do they have altogether?
A $45 B $48 C
1 answer
479 views
i am a two digit number above 50. the sum of my digits is 12. and the difference of my digits is 4. who am i?
5 answers
1,606 views
prove that the value of cosx + secx can never be 3/2.
2 answers
873 views
a train running at the speed of 180 km hr crosses a 365 meter long platform in 21sec. what is the length of the train
3 answers
491 views
. 30 girls and boys have planned for a picnic. There is a ratio of
3 girls to 7 boys. How many boys are there?
4 answers
1,806 views
if A and B are in ratio 3:4 and B and C in 12:13,then A and C will be
1 answer
279 views
an urn contains 2 white and 2 black balls. a ball is taken at random. if the ball is white then it is not replaced otherwise it
3 answers
585 views
a rectangular courtyard is 57 cm 50 cm long and 22 m . determine the least possible number of square stones of the same size
1 answer
435 views
in a class 7 2 fifthy were girls ,27were boys ,how many girls were there
1 answer
292 views
cosx+cosy=a and sinx+siny=b show that sin2x+sin2y=2ab(1-(2/(a^2+b^2))
plz plz show step
7 answers
1,815 views
An ac source of 50v,100÷πHz is connected in
series with an inductor of inductance L ad a resistor of resistance R.the current
2 answers
798 views
An ac source of 50v,100÷πHz is connected in
series with an inductor of inductance L ad a resistor of resistance R.the current
3 answers
707 views
1^2014 + 2^2014 + 3^2014 + 4^2014 + 5^2014 divided by 5, remains ______
1 answer
435 views
Two no which have same digit their sum is 9and difference is 27what will be the nos
1 answer
308 views
1/2,3/2 and 6/2 find the value
1 answer
367 views
11x+11y=1001
1 answer
222 views
Molly's dad is 22 years older than Molly. Twice her dad's age minus three times molly's age is equal to 31.
What is the age molly
2 answers
177 views
A gas station is 12 Kilometers away. How far is that in miles? Assume 1 mile is 1.6 kilometers.
7 answers
42 views
1) Anne saw an elephant at the zoo. The elephants mass was about 5,000 [grams or kilograms] ? - i think kilograms
2) In his
7 answers
56 views
A chicken soup recipe calls for 11 cups of chicken stock. How much is this in quarts?
Write your answer as a whole number or a
1 answer
41 views
A parachutist's rate during a free fall reaches 225 kilometers per hour. What is this rate in meters per second? At this rate,
3 answers
50 views
A copy machine makes 28 copies per minute. How long does it take to make 133 copies?
3 answers
63 views
The price of a technology stock has dropped to $9.74 today. Yesterday's price was $9.87. Find the percentage decrease. Round
3 answers
49 views
(a) An angle measures 25 degrees. What is the measure of its complement?
(b) An angle measures 136 degrees. What is the measure
1 answer
38 views
how do you find the perimeter?
1 answer
17 views
square root of 33
1 answer
19 views
how to find area of a rectangle
1 answer
18 views
A cable is 8.9m long. How long is the cable in decimeters?
Be sure to include the correct unit in your answer.
1 answer
22 views
Find the least common multiple of 20, 4, and 5.
3 answers
38 views
solve for x
15 over 7 = -3x
1 answer
19 views
Heather's chocolate bar is 46% cocoa. If the weight of the chocolate bar is 53 grams, how many grams of cocoa does it contain?
1 answer
52 views
write 2xsquared to the 3rd power without exponents
1 answer
37 views
write 3 and 1 over 8% as a decimal, not a percent
1 answer
26 views
A house has decreased in value by 35% since it was purchased. If the current value is $143,000, what was the value when it was
1 answer
35 views
The residents of a city voted on whether to raise property taxes. The ratio of yes votes to no votes was 3 to 2. If there were
1 answer
47 views
Solve the following proportion for y .
Round your answer to the nearest tenth. 13 over 17 = 9 over y
1 answer
43 views
(a) An angle measures 64 degrees. What is the measure of its complement?
(b) An angle measures 107 degrees. What is the measure
1 answer
30 views
write all the factors of 16
1 answer
22 views
It takes 36 pounds of seed to completely plant a 5-acre field.
How many acres can be planted per pound of seed?
1 answer
35 views
solve for x
15 over x+1 = 12 over x
1 answer
18 views
The angles of a triangle measure (x+10), (x+20) and (x+30) Find the measure of the smallest angle.
3 answers
21 views
There is a triangle. The angles are (4x+14), (5x+4) and (6x-3). Find the measure of the angles for the triangle.
1 answer
23 views
There is a triangle with the measures (5x-1), (8x+5) and (4x+6). Find the measures for each angle.
1 answer
19 views
The measures of two sides of a triangle are 7 and 11. Determine the range of values for the 3rd side of the triangle.
1 answer
56 views
Determine the length of the 3rd side of a triangle if the first two sides measure 10 and 12.
1 answer
61 views
Two sides of a triangle measure 4 cm and 9 cm. Determine which of the following choices cannot be the measure of the 3rd side.
A)
1 answer
37 views
Apply the triangle inequality theorem and determine which option could be the 3rd side of a triangle if the first two sides
3 answers
24 views
Apply the Triangle Inequality Theorem and determine which group of side measures will form a triangle.
A) 12, 10, 22 B) 8, 1, 7
2 answers
61 views
Find the complement of the set given that
U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}. (Use the roster method to write the set. Enter
1 answer
33 views
Find the number of subsets of the given set.
A truck company makes a pickup truck with 13 upgrade options. How many different
1 answer
31 views
Let
U = {1, 2, 3, 4, 5, 6, 7, 8}, A = {2, 6, 7}, B = {3, 4, 6, 8}, and C = {1, 5, 8}. Consider the following. A ∪ B' What does
1 answer
29 views
Let U = {1, 2, 3, 4, 5, 6, 7, 8},
A = {2, 4, 5}, B = {2, 3, 6, 8}, and C = {1, 3, 7}. Find the following. (Use the roster method
1 answer
28 views
A survey of 1,700 commuters in New York City showed that 1,130 take the subway, 620 take the bus, and 110 do not take either the
3 answers
44 views
A survey of 1,700 commuters in New York City showed that 1,130 take the subway, 620 take the bus, and 110 do not take either the
3 answers
48 views
Write the ratio in simplest form using a fraction.
A house with an original value of $270,000 increased in value to $330,000 in 5
7 answers
53 views
During filming, an IMAX camera uses 65-mm film at a rate of 5.6 ft/s.
(a) At what rate (in ft/min) does the camera go through
1 answer
21 views
According to the Bureau of Labor Statistics, in a recent year, there were 16,347,000 women aged 25 to 34 who were employed and
1 answer
34 views
Identify the quadrilaterals that can be constructed with congruent diagonals that bisect each other.
3 answers
58 views
E to F is 6 cm.
Courtney is constructing quadrilateral EFGH, where EF = 6cm, FG= 2cm, EH=5cm, <HEF = 60 degrees and <EFG = 140
1 answer
78 views
what is 2 times 100 percent?
1 answer
14 views
what does 2 multiplied by 100 percent equal?
1 answer
19 views
what is the probability that a quarter lands on heads 4 times in a row?
1 answer
20 views
what is 1 times 100%
3 answers
16 views
4. If three coins are flipped simultaneously, what is the probability that all three will be heads?
1 answer
26 views
A penny tossed 120 times results in 62 heads and 58 tails.
a. Calculate the expected number of heads and tails and determine the
1 answer
26 views
If man and a woman have five children (all girls), is it correct to assume that probability would favor their next child being a
1 answer
39 views
flip a quarter 50 times.
how many times does it come up heads? how many tails?
1 answer
23 views
A rectangle mural has a shorter side of 5 yards. The longer side measures 3 yards longer. How many square yards in the mural's
1 answer
17 views
Triangle height of 6 inches and base of 7 inches. What is the area in square inches
3 answers
21 views
The image shows a table at a restaurant in the shape of a trapezoid. The owners want to determine if trapezoid tables will fit
3 answers
29 views
There is a 1 over 25 scale drawing of a triangular sail. The triangle in the drawing is 2 feet high with a base of 1 foot. What
1 answer
18 views
Tom prints a photo of a penguin. The print measures 6 cm by 4 cm. He wants to reize the photo into the size of a postcard with a
3 answers
47 views
I draw 2 similar right triangles. The longest side of the larger triangle measures 21 cm and the shortest side of that one is
1 answer
35 views
The population density of a certain city is approximately 10,000 people per square mile. If the area of the city is 67.4 square
1 answer
25 views
A certain cell in the human body is approximately 0.000000057 meter wide. Write the width (in m) of the cell in scientific
1 answer
21 views
Find the complement of the set given that
U = {2, 3, 4, 5, 6, 7, 8, 9, 10}. (Use the roster method to write the set. Enter EMPTY
1 answer
32 views
Find the width, in inches, of 65 mm film.
1 answer
16 views
Three people pool their money to buy lottery tickets. The first person put in $20, the second $25, and the third $30. One of
1 answer
22 views
what is 22% off of $30
3 answers
15 views
explain to me why 56.25% is 9/16 as a fraction..
3 answers
25 views
18.75% as a fraction
3 answers
21 views
89% as a decimal
1 answer
15 views
in a recent year, the IRS reported that it had received 137 million tax returns. Of these, 89% were filed electronically. How
1 answer
29 views
If you withdraw part of your money from a certificate of deposit before the date of maturity, you must pay an interest penalty.
3 answers
38 views
An accountant purchases a T-bill with a face value of $6,000 for $5,935. If the term of the T-bill is 135 days, what is the
3 answers
33 views
The maturity value of a 4-month loan of $5,250 is $5,361.50. What is the annual simple interest rate (in percent) on this loan?
3 answers
35 views
The maturity value of a 4-month loan of $8,250 is $8,363.50. What is the annual simple interest rate (in percent) on this loan?
1 answer
46 views
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