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3 years ago

What does (3+2) 2-7=

Mathematics

1 answer:

Andrej [43]3 years ago

7 0

Answer:

Step-by-step explanation:

(3+2)²-7

add the number inside the parentheses

5²-7

the ² above the 5 is called square and that means multiply be him self so:

5*5=25

25-7=18

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Write a ratio, in simplest form, that compares the two quantities (show your work): 3 years to 6 months

lutik1710 [3]

Answer:

Step-by-step explanation:

1 year has 375 days so times that by 3 its is 1125.

6 months have 187.5 days or 187 days and 12 hours.

so 1125:187.5 which is 6.

The ratio is 6:1

8 0

3 years ago

A company interested in lumbering rights for a certain tract of slash pine trees is told that the mean diameter of these trees i

brilliants [131]

Answer:

97.6% of the trees will have diameters between 7.6 and 18.6 inches.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 12 inches

Standard Deviation, σ = 2.2 inches

We are given that the distribution of diameter of tree is a mound shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(diameters between 7.6 and 18.6 inches)

$P(7.6 \leq x \leq 18.6) = P(\displaystyle\frac{7.6 - 12}{2.2} \leq z \leq \displaystyle\frac{18.6-12}{2.2}) = P(-2 \leq z \leq 3)\\\\= P(z \leq 3) - P(z < -2)\\= 0.999 - 0.023 = 0.976= 97.6\%$

$P(7.6 \leq x \leq 18.6) = 97.6\%$

97.6% of the trees will have diameters between 7.6 and 18.6 inches.

8 0

3 years ago

Does this graph represent a function? Why or why not?

Yuliya22 [10]

Answer:

It’s D because no lines overlap so it passes the vertical line test

Step-by-step explanation:

5 0

3 years ago

PERSON 1 IS BOWLING WITH HIS FRIENDS IT COSTS $12DOLLERS FOR 10 PAIRS OF SHOES 25 PEOPLE WERE BOWLING HOW MUCH WOULD IT COST PER

Irina18 [472]

The answer is $300 because you have to multiply 25x12. 10x25=250 and 2x25=50. 250+50=300.

3 0

3 years ago

Evaluate the function for an input value of 3. f (x) = -4x^2 – 3x – 5

Lina20 [59]

Answer:

Step-by-step explanation:

<u>Function given:</u>

f(x) = -4x² – 3x – 5

Evaluate the function for an input value of 3

<u>Input value is x = 3, output value is:</u>

f(3) = -4(3²) – 3(3) – 5 = -4(9) - 9 - 5 = -36 - 14 = -50
f(3) = -50

3 0

3 years ago