2,578 Answered Questions for the topic Maths

07/12/21

The carbon (C) in the compound...
The carbon (C) in the compound C3H3Cl5 weighed 66 g. How much did the hydrogen (H) weigh? (C, 12; H, 1; Cl, 35)(A) 3.4 g(B) 1.2 g(C) 66 g(D) 1.375 g(E) none of these
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07/12/21

Expand the equation:
Expand: (a1/2+b1/2)2(A) a1/4+b1/4(B) a+(ab)1/2+b(C) a+b(D) a+2a1/2b1/2+b(E) none of these
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07/12/21

Write 4.̅5̅4̅5̅ as a fraction of integers

(A) 4541/999(B) 909/200(C) 450/99(D) 4545/1000(E) none of these
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07/12/21

Solve for x, y, z: {4x – y = 4} {y – 5z = –12} {5x + z = 19} Then evaluate: x + y + z =
(A) 161/3(B) - 43(C) 15(D) 57(E) none of these
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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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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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Maths

07/07/21

Can someone answer this?
A garden is rectangular with a width of 14 feet and a length of 10 feet. If it is surrounded by a walkway 2 feet wide how many square feet of area does the walkway cover?
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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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Maths

07/03/21

find the coordinates
Find the equation for the coordinates x1 = 0, y1 = -3, x2 = 8 and y2 = -7
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Maths Ratio

07/01/21

ratio on students in a classroom
There are 30 students in a classroom. The ratio of boys to girls is . Some additional girls enter the classroom, and the ratio of boys to girls is now . How many girls entered the classroom?
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06/30/21

What is the relation between y=sinx and y=cosx ? Explain it in 3-5 sentences..
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Maths

06/27/21

Maths word problem with equation

A Tennis ball is thrown into Swimming pool from the top of a tall hotel. The height of the ball from the pool is modeled by D(t) = -16t2-4t +300 feet, where t is the time, in seconds, after the... more
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Maths

06/27/21

Word problem with equation

A Tennis ball is thrown into Swimming pool from the top of a tall hotel. The height of the ball from the pool is modeled by D(t) = -16t2-4t +300 feet, where t is the time, in seconds, after the... more
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Maths Math

06/23/21

Find the range of values of k for which the equation x2 + 2(k – 3)x + 33 – k = 0 has no roots.
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06/22/21

Find the domain and range of h(x)=√1-3x
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06/20/21

Work-time related math.
Working alone at their respective constant rates, A can complete a task in ‘a’ days and B in ‘b’ days. They take turns in doing the task with each working 2 days at a time. If A starts they finish... more
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06/16/21

The mean temperature for the first 7 days in January was 6 °C. The temperature on the 8th day was 5 °C. What is the mean temperature for the first 8 days in January?
The mean temperature for the first 7 days in January was 6 °C.The temperature on the 8th day was 5 °C.What is the mean temperature for the first 8 days in January?
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Maths Geometry

06/14/21

Geometry of Isosceles Triangles
Given an isosceles triangle ABC with AB = AC, D is a point on AB such that AD: DB = 3:1, E is a point on side AC, and when DE and BC are extended, they meet at a point F, such that DE:EF = 1:3.a)... more
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06/14/21

Factor reminder math question.
When a negative integer x is divided by -5, the remainder is 1. When x is divided by 8, the reminder is -4. What is the largest value of the of the negative integer y such that x multiplied by y is... more
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06/13/21

Mixture replacement math help.
A container contains 64 liters of pure milk. A replacement process takes place three times. A person takes out 16 liters of milk from the container and replaces it with 16 liters of water. Then 16... more
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06/09/21

Solve: -5x^2 + 5 = -2x
The solution contains a reduced fraction ± another reduced fraction with a radical numerator. What is this fraction with a radical numerator?(A) ± (2√6 i)/5(B) ± (2√26)/13(C) ± (√26 i)/5(D) ±... more
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Maths Geometry

06/09/21

Solve for t help please

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Maths Statistics

06/08/21

Construct frequency distribution table by using class interval of 5
Arange data given below in an array and and construct frequency distribution table using class interval of 5 indicate class boundries and class... more
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06/07/21

What is the maximum height the rocket reaches?
A rocket takes off from a height of 30 feet with an initial velocity of 150 ft/sec. The equation that models the path that the rocket takes is: (G)x = -16t^2 + 150t + 30. What is the maximum height... more
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Maths Mathematics

06/07/21

The sides of an integral triangle are 4,8 and (20-2x).
The sides of an integral triangle are 4,8 and (20-2x). Find the sum of all values of x?
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