3 years ago

Eugene had 24$ to spend on three pencils. After buying them he had 18$. How much did each pencil coast?

Mathematics

1 answer:

Helga [31]3 years ago

7 0

Each pencil costed $2.

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Which set of side lengths form a right triangle?

vova2212 [387]

Answer:

Answer is 7cm,8cm,10cm

Step-by-step explanation:

A^2+B^2=C^2

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3 years ago

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Alexander purchased a computer on sale. The regional price was $1200. The sale price was 5/6 of the original price. How much did

mel-nik [20]

5/6 * 1200/1 = 6000/6
6000/6 = 1000
Alexander pay $1000 for the computer.

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3 years ago

Express the probability that a die wil land on a number less than 5 as a fraction

Rashid [163]

Answer:

$\frac{2}{3}$

Step-by-step explanation:

Values less than 5 on a die are 1, 2, 3, 4 ← 4 values out of a possible 6

P( < 5) = $\frac{4}{6}$ = $\frac{2}{3}$ in simplest form

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3 years ago

A certain number added to its square is 30. Find the number

Alex Ar [27]

X+x²=30
x²+x-30=0
(x+6)(x-5)=0
x=-6 or x=5

5 0

3 years ago

A farmer has both pigs and chickens on his farm there are 78 fee and 27 heads how many pigs and how many chickens are there

Andre45 [30]

Assuming health non-mutated animals:
$Feet = 4*Pigs + 2*Chickens$
$Heads = Pigs + Chickens$

By back substitution:
$78 = 4*(27-Chickens) + 2*Chickens$
$78 = 108 -2*Chickens$
$-30 = -2*Chickens$
$Chickens= 15$

Then:
$27 = Pigs + 15$
$Pigs = 12$

To check:
$Feet = 4*Pigs + 2*Chickens$
$78 = 4*12 + 2*15$
$78 = 48 + 30$
$78 = 78$ CHECKS

6 0

3 years ago