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3 years ago

Andres bought 3 shirts that each cost the same amount and a pair of jeans that cost $40. The items he

Mathematics

2 answers:

Vsevolod [243]3 years ago

5 0

shirt-x

a.3s+40=106

b. 3s= 66

s=22

if my answer helps please mark as brainliest.

mart [117]3 years ago

3 0

Andres bought 3 shirts that each cost the same amount and a pair of jeans that cost $40. The items he
bought cost a total of $106 before tax was added.

PART A: Create an equation to find s, the cost of each shirt.

Reminder! Your equation should not have any spaces included in it. Ex. 4x+2=10

PART B: What is the cost of each shirt?

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Lena [83]

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3 years ago

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sashaice [31]

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4 years ago

Gabby has a bag containing 36 nickels and quarters. The total value of the coins is $5. How many quarters does gabby have?

olganol [36]

There are 20 nickels and 16 quarters

Solution:

Let "n" be the number of nickels

Let "q" be the number of quarters

We know that,

1 nickel = 0.05 dollar

1 quarter = 0.25 dollar

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Therefore,

n + q = 36

n = 36 - q ------- eqn 1

The total value of the coins is $5

Thus we frame a equation as:

number of nickels x 1 nickel + number of quarters x 1 quarter = 5

$n \times 0.05 + q \times 0.25 = 5$

0.05n + 0.25q = 5 ------- eqn 2

Substitute eqn 1 in eqn 2

0.05(36 - q) + 0.25q = 5

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3 years ago

Suppose that people's heights (in centimeters) are normally distributed with a mean of 170 and a standard deviation of 5. We fin

Anni [7]

We have
mean=mu=170
standard deviation=sigma=5

can now calculate the Zmin and Zmax using Z=(X-mean)/standard deviation
Zmin=(165-170)/5=-1
Zmax=(175-170)/5=+1
From normal probability tables,
P(z<Zmin)=P(z<-1)=0.15866
P(z<Zmax)=P(z<+1)=0.84134
P(165<x<175)=P(Zmin<z<Zmax)=0.84134-0.15866= 0.68269

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4 years ago

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fgiga [73]

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3 years ago