31 Answered Questions for the topic Grade 9

Grade 9 Math Probability

05/10/21

Math Probability Question involving dice
An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two... more
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03/05/21

Evaluate the following expressions with given values.
-y3 + 5y - 2 when y = -3Canadian Grade 9 Academic Math Class
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09/29/20

What is the density of a substance if 10 g occupies 10 cm3? What do you think this substance is? Why? (using GRASS method)
this is for a canadian grade 9 academic science class
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05/21/20

Grade 9 math linear equations
Leon took three of her friends to visit the zoo. The bus fares cost $5.50 per person. The cost of admission to the zoo was the same for each person in the group. Leon spent $109 altogether on fares... more
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05/21/20

Grade 9 math linear equations
An equilateral triangle has a perimeter of 17.85 metres. The side length of the triangle , in metres, is 2k - 0.5. What is the value of k ?
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05/01/20

Use completing the square to identify the coordinates of the circle's center
5. The general equation of a circle is x^2 + y^2 - 12y +20 = 0a. Use completing the square to identify the coordinates of the circle's centerAND the length of the circle's radius.b. Is the point (... more
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Grade 9 Math

07/22/19

What is the equation in standard form for the line with slope 3 and y intercept -4
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03/08/18

The cost of a shirt is $3 more than half the price of a pair of jeans. The cost of the shirt and jeans together is $45. Find the cost of each item.
OK, so I really struggle with math and I was hoping someone could help or explain this to me. And since I'm also in grade 9, we only use one variable. When I tried it my equation ended up being... more
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10/27/17

The total of three sisters’ ages is 39. Dina is half as old as Michelle and 3 years younger than Juliet. How old are the sisters?
snjs sksjsbjz sisjs is ask jsjsnsj jajs
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Grade 9 Math Geometry Circle

10/24/17

what are the coordinates of the center and the length of the radius of the circle?
The equation of a circle is x^2+y^2-2x+6y+3=0. What are the coordinates of the center and the length of the radius of the circle.
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09/13/17

Thermostat range
the thermostat setting keeps the temperature in a building within 2 degrees of the set temperature. if the thermostat is set at 71, find the range of possible temperatures
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09/06/17

Grade 9 math question! Need help asap!
A company offers internet for a maximum of 10 GB for $36. The costs of additional fees are $2.15/GB. Write an equation to represent this relation.
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08/20/17

Bo has a collection of 175 dimes and nickels. The collection is worth $13.30. How many dimes and nickels does he have?
I don't get it cause you can't make it with 175 coins
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07/06/17

Grade 9 - Discriminant Question
Show that 2kx2 - 2(k+3)x + k + 10/k is always negative for k < 0
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03/23/17

during the summer, on one particular day, darkness is 5 hours less than daylight. How many hours of darkness are there on this particular day?
Hello, this is a word problem/homework question and I already have my "let" statement written but i can't seem to get a formula, everything that i've tried has made no sense. please help!
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03/23/17

There is 108 bugs. There are ants and spiders. If there are 682 legs how many ants and how many spiders are there?
this will have a variable in it.
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03/23/17

Jane has 75 coins in her piggy bank filled with dimes and quarters. if Jane a total of $11.25 in her piggy bank ,how many of each type of coin does she have?
This is grade 9 Academic math! it is also solving for a variable! It may end up as an expression instead of an equation.  
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10/07/16

Analytical Geometry Questions (3 questions, I'm really struggling with this unit.)
FIRST QUESTION:   I've tried attempting this but I'm unsure of my answers. Can someone explain to me?   The question I am struggling with is asking me to determine which of the following lines... more
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Grade 9 Math Math Help

10/06/16

Polygons and Diagonals: Which polygons have a relationship with their side amount and diagonals?
The exact questions states that a quadrilateral has two diagonals, and a pentagon has 5.  "Investigate different polygons and see if you can find a relationship between the number of sides and the... more
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06/21/16

Grade 9 Math Word Problem
A fisherman comes back from a long day at sea with a catch of flounder and lobster. Currently, lobster is worth $15.44 per kilogram, and flounder is worth $6.80 per kilogram. He caught three times... more
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Grade 9

06/12/16

if i have a 58.57% in my class and i need a 60% to pass how many questions can i get wrong of a 90 question test and its 15% of my grade
if i have a 58.57% in my class and i need a 60% to pass how many questions can i get wrong of a 90 question test and its 15% of my grade
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10/29/15

Each interior angle ã in a regular ñ-gonna has a measure of ã = 20ñ. How many sides does the polygon have?
Each interior angle ã in a regular ñ-gon has a measure of ã = 20ñ. How many sides does the polygon have?
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Grade 9 Math Word Problem

10/20/15

Word Math Problem
Todays temperature is 5 degrees celcius. Yesterday it was 8 degrees colder. Tomorrow they predict it will lower by 6 degrees. What is the difference inbetween yesterday and tomorrows temperature?
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10/20/14

What are the unkown widths of the garden?
A garden is in the shape of a trapezoid. The garden has an area of 60 meters squared and a depth of 8 meters. The width at the back is double the width at the front. 
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12/17/13

Grade 9 math help
Video club members pay an annual membership fee of $25.00, which allows them to rent movies for $3.50 instead of $5. What is the least number of videos that a club member must rent during a year to... more
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