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3 years ago

Pamela's age is two times it's age. The sum of their ages is 69 what is jiri’s age?

Mathematics

2 answers:

Tresset [83]3 years ago

5 0

Answer:

Step-by-step explanation:

2x+x = 69

3x= 69

x= 69/3

x= 23

pamela = 2x = 46 years

jiri= 23 years

pickupchik [31]3 years ago

3 0

9514 1404 393

Answer:

Step-by-step explanation:

Let J represent Jiri's age. Then Pamela's age is 2J and the sum of their ages is ...

J + 2J = 69

3J = 69 . . . . .collect terms

J = 23 . . . . . . divide by 3

Jiri's age is 23.

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Use the table to write a linear function that relates y to x.

blsea [12.9K]

Answer:

y = - $\frac{2}{3}$ x

Step-by-step explanation:

the equation of a linear function in slope- intercept form is

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m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (- 8, 2) and (x₂, y₂ ) = (1, - 4) ← 2 ordered pairs from the table

m = $\frac{-4-2}{1-(-8)}$ = $\frac{-6}{1+8}$ = $\frac{-6}{9}$ = - $\frac{2}{3}$

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y = - $\frac{2}{3}$ x + 0 , that is

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3 years ago

A potato chip company produces a large number of potato chip bags each day and wants to investigate whether a new packaging mach

alexandr1967 [171]

Answer:

The conditions for the approximation have been met

Step-by-step explanation:

Random samples on both cases and

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p∧n sample proportion of bags packaged on the new machine that are damaged

p∧c = ( p∧o + p∧n ) / (nO + nN )

p∧o = 15 % p∧o = 0,15 nO = 150

p∧o * nO = 0,15 *150 p∧o * nO = 22,5

p∧n = 8 % p∧n = 0,08 nN = 200

p∧n*nN = 0,08 * 200 p∧n*nN = 16

Both p∧n*nN and p∧o * nO are bigger than 5

Therefore both samples are big enough for the approximation of the binomial distribution to normal distribution

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Answer:

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Step-by-step explanation:

It's three fourths, she ate one fourth.

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