thedudethatneedshelp

29 Questions
0 Answers

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What is the largest number C such that 2x^2+5x+C=0 has at least one real solution? Express your answer as a common fraction.

thedudethatneedshelp Aug 16, 2022

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323

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A child is given two large squares, ten small squares, and nine rectangle whose length and width are those of the squares. Show with an illustration how the child can make one complete rectangle using all 21 pieces. (Hint: Let x=side of large square, y=side read more ..

thedudethatneedshelp Jan 23, 2022

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431

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How many copies of the digit 0 are there among the digits of the first 2016 positive integers?

thedudethatneedshelp May 24, 2021

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460

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Two different digits from 1 to 9 are chosen randomly to form a 2-digit number. By reversing the order of
the digits, a second 2-digit number is formed. What is the probability that the sum of these two numbers will
be a multiple of the sum of the read more ..

thedudethatneedshelp May 24, 2021

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435

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An artist mixes a shade of paint that is 33 1/3%
red, 15% yellow and the rest blue. He then mixes a second
shade of paint using only red and blue in a 3:1 ratio. If the artist then combines 300 mL of the first shade with
120 mL of the second read more ..

thedudethatneedshelp Mar 11, 2021

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492

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help plz

The numbers between 1 and 2011 are written on a piece of paper. Logan circles the even numbers with red
circles and Miranda circles the multiples of 5 with blue circles. How many numbers are circled with only one
color?

thedudethatneedshelp Mar 3, 2021

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504

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Kendra has a basket containing 4 types of fruit. She has 3 times as many bananas as apples. There are 4
more pears than bananas, and 2 less lemons than apples. What is the least number of pieces of fruit that could
be in Kendra’s basket?
read more ..

thedudethatneedshelp Mar 3, 2021

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583

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contest question

Elves and ogres live in the land of Pixie. The average height of the elves is 80 cm, 36 the average height of the ogres is 200 cm and the average height of the elves and the ogres together is 140 cm. There are 36 elves that live in Pixie. How many ogres read more ..

thedudethatneedshelp Oct 4, 2020

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574

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+126

help plz!

John is paid 2 1 2 times his normal hourly rate for each hour he works on a holiday. Last week he worked 45 hours, five hours were on a holiday. Find his normal hourly rate if he earned $420.

thedudethatneedshelp Sep 19, 2020

0

572

2

+126

help!

The number N = 111...1 consists of 2006 ones. It is exactly divisible by 11. How many zeroes are
there in the quotient N/11

thedudethatneedshelp Sep 12, 2020

0

507

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help!

Thirty-one students who write a contest get all the integer grades from 70 through 100, with different students getting different grades. When one particular score is removed, the average of the 30 remaining scores is the same as the average of all 31 scores. read more ..

thedudethatneedshelp Sep 12, 2020

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627

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plz help :(

The price of a TV (before tax) is a whole number of dollars and is the same in Alberta and in BC. That tax is 7% in Alberta and 15% in BC. After the tax is applied the TV costs $10 more in BC than in Alberta. What is the before-tax price (in dollars) of read more ..

thedudethatneedshelp Sep 12, 2020

+1

579

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+126

help plz

For what real values of $a$ is the expression $\frac{a+3}{a^2-4}$ undefined? List your answers in increasing order separated by commas.

thedudethatneedshelp Aug 28, 2020

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1204

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The graph of the parabola $x = 2y^2 - 6y + 3$ has an $x$-intercept $(a,0)$ and two $y$-intercepts $(0,b)$ and $(0,c)$. Find $a + b + c$.

The graph of the parabola $x = 2y^2 - 6y + 3$ has an -intercept $(a,0)$ and two $y$-intercepts $(0,b)$ and $(0,c)$. Find $a + b + c$.

thedudethatneedshelp Aug 23, 2020

0

555

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+126

please help ive been stuck for an hour!

How many $y$-intercepts does the graph of the parabola $x = -y^2 + 4y - 4$ have?

thedudethatneedshelp Aug 22, 2020

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902

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please help!

Suppose p and q are inversely proportional. If p=25 when q= 6, find the value of p when q=15.

thedudethatneedshelp Aug 5, 2020

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587

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help please!

John goes from A to B in 10 h and B to A in 8 h. Rate going back was 15 km/h more than going there. How far from A to B?

thedudethatneedshelp May 29, 2020

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560

0

+126

plz help

Jim walked 12 km. He then biked 5 times as fast for another 100 km. The total time for the trip was 8 h. Find equations for his walking and biking rates.

thedudethatneedshelp May 29, 2020