07/06/22

Show that x+a is a factor of the polynomial P(x)=(x+a)^4+(x+c)^2-(a-c)^2
Use factor theorem
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07/06/22

What mass of (solid) LiCl is needed to prepare 200. mL of 0.40 M solution?
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07/06/22

Functions basic level 1 Determine k and m for the lines a) y=(5-2x)/(7) b) y=15
Functions basic level 1Determine k and m for the linesa) y=(5-2x)/(7)b) y=15
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07/03/22

Use a system of equations. The sum of three Integers Is 107. The sum of the first and second Integers exceeds the third by 75. The third integer is 74 less than the first. Find the three integers.
Find the 3 integers.
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07/03/22

Determining naturally occuring isotopes of Bromine using mass spectrum information
The element bromine has two naturally-occurring isotopes. A mass spectrum of molecular Br2 shows three peaks with mass numbers of 158 u, 160 u, and 162 u. Use this information to determine which... more
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06/30/22

Physics problem about evaporation
The force of gravity acts on a raindrop of mass m0 making it fall down and slowly evaporate. Due to this, the mass of the raindrop gets smaller every second by ∆m. Calculate the force done by... more
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06/30/22

HOW TO SOLVE? Net Force (Physics)
Three identical point charges , each 10 mC , are placed at the vertices of an equilateral triangle such thattwo of these charges are located at the coordinate origin and at (10 cm, 0 cm) and the... more
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06/29/22

May I get help on this?
Express each of these concentrations in parts per million (ppm).6.3 milligrams per kilogram of waterConcentration=ppm?6.3 micrograms per kilogram of waterConcentration=ppm?6.3 nanograms per... more
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06/28/22

Mathematics question

On each side of a triangle, 5 points are chosen (other than the vertices of the triangle) and these 15 points are colored red. How many ways are there to choose four red points such that they form... more
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06/28/22

Mathematics question
Daud want to paint some faces of a cube with green paint. At least one face must be painted. How many ways are there for him to paint the cube? Note: Two colorings are considered the same if one... more
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06/28/22

Find the equation of the line through point (2,−1) and parallel to 2x+5y=15. Use a forward slash (i.e. "/") for fractions (e.g. 1/2 for 1/2 ).
please help
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06/28/22

Help me solve this problem
The specific heat of solid aluminum metal at 273.15K and 1 bar pressure is 0.897 J/g*K. When 27.49kJ of heat is added to a block of Al(s), the temperature rises from 280.9K to 337.3K. What is the... more
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06/25/22

How many square feet of each tile should he plan to use if he wants the overall cost to be $4.72 per square foot? 
Sergio wants to tile the floor of his house. He will need 755 square feet of tile. He will do most of the floor with a tile that costs $3.20 per square foot, but also wants to use an accent tile... more
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06/25/22

physics question - in order to lift a 50 kg height from the ground to over your head, a vertical distance of 2.2 m how much metabolic energy must

in order to lift a 50 kg height from the ground to over your head, a vertical distance of 2.2 m how much metabolic energy must be expended assume the usual efficiency for the human body of 25%.
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06/25/22

physics question
a fireman of mass 80 kg slides down a pole at constant speed. when he reaches the bottom, 4.2 m below his starting point, how much has thermal energy increased during his slide?A. 2800 JB. 3300 JC.... more
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06/24/22

Mathematics question
Given a regular octagon ABCDEF GH with side length 3. By drawing the four diagonals AF,BE, CH, and DG, the octagon is divided into a square, four triangles, and four rectangles.Find the sum of the... more
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06/24/22

help please and thank you
The First Three Terms Of A Sequence Are Given. Round To The Nearest Thousandth (If Necessary).5, 6, 36/5, ...Find The 9th Term.
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06/24/22

Can you help me with this question

The perimeter of a rectangular painting is 308 cm . If the length of the painting is 86 cm what is its width?
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06/24/22

Tangential and Normal Components of Acceleration
Find the tangential and normal components of the acceleration vector for the curve →r(t)=⟨4t,3t^2,4t^4⟩ at the point t=2a(2) = ? T + ? N
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06/22/22

Maths question pleaseanswer asap
The cost of admission to a theme park was $403 for 4 adults and 3 children. The admission was $690 for 8 adults and 2 children to the park. How much was the admission for each adult and child?
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06/19/22

One pan pizza and two beef burritos provide 2800 calories. Two pan pizzas and one beef burrito provide 3260 calories. Find the caloric content of each item.
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06/18/22

Mathematic question
A group of students collected 200 seashells at a beach. What would be the maximum possiblenumber of students in the group, if every student collected at least one seashell, and allstudents... more
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06/18/22

Solving a percentage mixture problem using a system of linear equations
A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is 20% salt and Solution B is 70% salt. She wants to obtain 150 ounces... more
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06/17/22

Applications with Systems of Equations Homework
A store owner wants to develop a new snack mix by mixing chocolate and trail mix. How many pounds of chocolate costing $15.70 per pound should be mixed with 20 pounds of trail mix costing $2.60 per... more
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06/17/22

100cm3 buffer solution of 0.1M CH3COOH and 0.05M CH3COONa are added 3cm3 HCl 0.01M. Ph =?
I'm having trouble!
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