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3 years ago

PLEASE HELP WILL MARK YOU BRAINLIEST! NO FAKE ANSWERS.

Mathematics

2 answers:

quester [9]3 years ago

8 0

$▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪$

The number of terms in the given expression is 3, so it is a <u>Trinomial</u>

erica [24]3 years ago

5 0

5x^2 + 3x - 3 is a trinomial.

A monomial is an expression that has one term, such as 3x.

A binomial is an expression that has two terms, such as 4x^2 + 6x or 4x - 6.

A trinomial is an expression that has three terms, such as x^2 + 5x + 6.

Hope this helps!! :)

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Use the slope formula to determine the slope of the line that passes through the points A(-5, 9) and B(-5, 6).

Anit [1.1K]

Answer:

undefined

Step-by-step explanation:

The slope formula tells you the slope is ...

m = (y2 -y1)/(x2 -x1)

Fill in the point coordinates, we find the slope to be ...

m = (6 -9)/(-5 -(-5)) = -3/0

This slope is undefined.

___

It means the line is a vertical line. The constant must match the x-coordinates of the points:

x = -5 . . . . the line through the given points

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3 years ago

1/6 + 7/9 + _____ = 1

Leona [35]

Answer:

$\frac{1}{18}$

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3 years ago

Read 2 more answers

The average life of individual is 70 years. With a standard deviation of 5.5 years. Assume that the lives of these individuals i

Harlamova29_29 [7]

Answer:

The answer is below

Step-by-step explanation:

Given that:

mean (μ) = 70 years, standard deviation (σ)= 5.5 years.

a) The z score measures how many standard deviation a raw score is above or below the mean. It is given as:

$z=\frac{x-\mu}{\sigma}$ , for a sample size of n, the z score is: $z=\frac{x-\mu}{\sigma/\sqrt{n} }$

Given a sample of 5 turtles, we have to calculate the z score for x = 60 and x = 80.

For x = 60:

$z=\frac{x-\mu}{\sigma/\sqrt{n} }=\frac{60-70}{5.5/\sqrt{5} } =-4.07$

For x = 80:

$z=\frac{x-\mu}{\sigma/\sqrt{n} }=\frac{80-70}{5.5/\sqrt{5} } =4.07$

The probability that a mean life of a random sample of 5 such turtles falls between 60 and 80 years = P(60 < x < 80) = P(-4.07 < z < 4.07) = P(z < 4.07) - P(z < -4.07) = 1 - 0 = 1 = 100%

b) The z score that corresponds to top 10% is -1.28.

$z=\frac{x-\mu}{\sigma/\sqrt{n} }\\\\-1.28=\frac{x-70}{5.5/\sqrt{5} }\\ x-70=-3\\x=70-3\\x=67\ years$

3 0

3 years ago

Max's car holds 18 gallons of gasoline.Driving on the highway, the car uses approximately 2 gallons per hour. Let h represent th

balandron [24]

So amount minused=hours driven times gallons per mile=h times 2 or 2h

so we minus 2h

18-2h is the expression

8 0

4 years ago

A group of college students developed a solar-powered car and entered it in a race. The car travels at a constant speed of 100 m

nekit [7.7K]

Answer:

A) Distance time graph

B) d(t) = 25t

C) The expression shows the distance more clearly.

Step-by-step explanation:

A) A distance time graph as seen in the attachment provides a representation of the distance travelled.

We are told the car travels at a constant speed of 100 meters per 4 seconds. Which means that 100 m for each 4 hours. So, for 200m, it's 8 hours like seen in the graph and for 300m,it's 12 hours as seen in the graph.

B) And expression for the distance is;

d = vt

Where;

d is distance in metres

v is speed in m/s and t is time

We are told that the car travels at a constant speed of 100 meters per 4 seconds.

Thus, v = 100/4 = 25 m/s

Distance travelled over time is;

d(t) = 25t

C) Looking at both A and B above, it's obvious that the expression of the distance shows a more clearer way of getting the distance because once we know the time travelled, we will just plug it into the equation and get the distance. Whereas, for the representation form, one will need to longer graphs if the time spent is very long.

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3 years ago