thedudethatneedshelp

29 Questions
0 Answers

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187

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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 16 ago 2022

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305

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+126

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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 lee mas ..

thedudethatneedshelp 23 ene 2022

+1

388

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

thedudethatneedshelp 24 may 2021

+2

420

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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 lee mas ..

thedudethatneedshelp 24 may 2021

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422

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+126

help

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 lee mas ..

thedudethatneedshelp 11 mar 2021

+1

451

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+126

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 3 mar 2021

0

471

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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?
lee mas ..

thedudethatneedshelp 3 mar 2021

+1

539

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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 lee mas ..

thedudethatneedshelp 4 oct 2020

+1

528

1

+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 19 sept 2020

0

534

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 12 sept 2020

0

475

1

+126

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. lee mas ..

thedudethatneedshelp 12 sept 2020

+1

583

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+126

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 lee mas ..

thedudethatneedshelp 12 sept 2020

+1

537

1

+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 28 ago 2020

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1177

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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 23 ago 2020

0

517

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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 22 ago 2020

+1

883

3

+126

please help!

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

thedudethatneedshelp 5 ago 2020

+1

549

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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 29 may 2020

0

521

0

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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 29 may 2020