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3 years ago

Lisa's dog has 4 squeaky toys. Two thirds of the dog's toys are squeaky toys. How many dog toys does Lisa's have in all?

1 answer:

3 0

. Lisa's dog has 4 squeaky toys
. the squeaky toys are 2/3 of all the dog's toys

. let x be number of all dog toys

make an equation
(2/3)x = 4 ← solve
x=6

check
2/3 × 6 = 4

Lisa's Dog has 6 toys in all

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2 years ago

Read 2 more answers

What is the greatest common factor of 20 and 30???

Ugo [173]

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3 years ago

For this set of data, 89, 88, 84, 87, 89, 84, 84, 83, 85, 89, 84 Find the standard deviation

Ilia_Sergeevich [38]

Answer: 2.2962419891482

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the mean in this case is 86

then subtract each number by the mean of 86

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then square all the numbers to get : 9, 4, 4, 1, 9, 4, -4, 9, 1, 9, 4

then find the mean of those numbers which is 5.2727272727273

then find the square root of this number to find the standard deviation

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3 years ago

Divide using synthetic division: (2x^4+2x^3+-12x^2+x+6)/(x+3)

kap26 [50]

Synthetic division yields

..... || 2 2 -12 1 6

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= = = = = = = = = = = = = =

..... || 2 -4 0 1 3

which translates to

$\dfrac{2x^4+2x^3-12x^2+x+6}{x+3}=2x^3-4x^2+1+\dfrac3{x+3}$

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3 years ago