4 years ago

Simplificando a expressão (3x^2 + 5x - 2) + (x^2 - 2x - 1) , vamos obter :

Mathematics

1 answer:

Artist 52 [7]4 years ago

7 0

You have to add all the common terms together.

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he U.S. Bureau of Labor Statistics reports that the average annual expenditure on food and drink for all families is $5700. Assu

Papessa [141]

Answer:

87.08% percentage of families spend more than $4000 annually on food and drink

Step-by-step explanation:

Given -

average annual expenditure on food and drink for all families is $5700

Mean $(\nu)$ = 5700

standard deviation $(\sigma )$ = 1500

Let X be the no of families spend annually on food and drink

percentage of families spend more than $4000 annually on food and drink =

$P(X > 4000)$ = $P(\frac{X - \nu }{\sigma }> \frac{ 4000 - 5700}{1500})$

= $P(Z > - 1.13)$ Using $(Z = \frac{X - \nu }{\sigma })$

= 1 - $P(Z$

= 1 - .1292

= .8708

= 87.08%

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4 years ago

A city has a population of 230,000 people. Suppose that each year the population grows by 8.5%. What will the population be afte

worty [1.4K]

Answer:

720,682.92

Step-by-step explanation:

8.5% = 0.085

P(t) = Initial Population * (1 + rate)t

P(t) = 230,000(1 + 0.085)t

P(t) = 230,000(1.085)t

P(14) = 230,000(1.085)14

P(14) = 720,682.82

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3 years ago

Find the least positive angle measurement that is coterminal with - 70°

Evgesh-ka [11]

Answer:

292

Step-by-step explanation:

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3 years ago

Bernadette is making a quilt. She needs 6 square yards of green fabric, 4 square yards of purple fabric and 10 square yards of w

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Answer:

60 feet

Step-by-step explanation:

6 + 4 + 10 = 20 yards

20 yards = 60 feet (20 * 3 feet = 60 -> 3 feet in a yard)

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2 years ago

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Part of the cell theory states that the cell is the basic unit of all living things. Julio wanted to use an analogy to explain t

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Answer: D
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3 years ago