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Cerrena [4.2K]
2 years ago
13

in science class, the average score on a lab report is 87 points, with all students scoring within 1.8 points of the average. if

x represents a student's score, write an equation that represents the minimum and maximum scores. |x − 87|
Mathematics
1 answer:
inn [45]2 years ago
5 0

The equation representing the minimum and maximum scores |x-87| = 1.8

Given that the average score on a lab report is 87 points. All students score within 1.8 points of the average.

Let 'x' be the score of student. The maximum and minimum score of a student lies within 1.8 points of the average.

Then, maximum score of a student, x = 87+1.8

and minimum score of a student, x = 87-1.8

Combining these two equations, we get, x = 87 ±1.8

Or, more conveniently, |x-87| = 1.8 represents the minimum and maximum scores obtained by a student.

Learn more about average at brainly.com/question/20118982

#SPJ4

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In a recent snail race,the winning snail traveled 5.85 cm 3/4 of a minute. How fast was the snail traveling in centimeters per s
Vladimir79 [104]

Answer:

0.121 centimeters per second.

Step-by-step explanation:    

We are told that in a recent snail race,the winning snail traveled 5.85 cm 3/4 of a minute.

To find the speed at which snail was traveling in centimeters per second, we will divide 5.85 by number of seconds in 3/4 of a minute.

First of all we will find how many seconds are equal to 3/4 of a minute.

\text{3/4 of a minute}=(\frac{3}{4} \times 60)\text{ seconds}

\text{3/4 of a minute}=3\times 15\text{ seconds}

\text{3/4 of a minute}=45\text{ seconds}

Now we will divide 5.85 by 45 to find the speed of snail in centimeters per second.

\text{Speed of snail in centimeters per second}=\frac{5.85\text{ Centimeters}}{45\text{ Second}}

\text{Speed of snail in centimeters per second}=0.1211111111111111\frac{\text{ Centimeters}}{\text{ Second}}

Therefore, the snail was traveling at a speed of 0.121 centimeters per second.

6 0
3 years ago
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Repost, algebra help needed please
Rom4ik [11]

Answer:

y- intercept = \frac{1}{2}

Step-by-step explanation:

Given

f(x) = \frac{1}{2} (6)^{x}

To find the y- intercept let x = 0 , then

f(0) = \frac{1}{2} (6)^{0} [ 6^{0} = 1 ]

      = \frac{1}{2} × 1 = \frac{1}{2} ← y- intercept

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3 years ago
Rachel mows 5 lawns in 8 hours. At this rate how many lawns can she mow in 40 hour?
posledela

We can think of this as an equality

5 Lawns = 8 Hours

If she needs 40 hours, you can multiply 8 hours by 5 to get 40, but now it's not balanced. So, you need to multiply 5 to the other side too so:

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Therefore she mows 25 Lawns in 40 Hours

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What is the measure of angle x°?<br> pls answer real quick 20 points
devlian [24]

Answer:

30

Step-by-step explanation:

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4 0
3 years ago
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What is the domain of the function?
ivann1987 [24]
For a radical with an even root, like 2 in this case, if the radicand turns to a negative value, the result is just an imaginary value, which is another way to say, there's no such a root, no solution per se.

for that, let's first check when the radicand turns to 0 first.

\bf -8x+8=0\implies -8x=-8\implies x=\cfrac{-8}{-8}\implies \boxed{x=1}

so, that happens when x = 1, -8(1) +8, is just -8+8 or 0, ok.

so.. if "x" goes a bit higher, like say 2, -8(2) + 8 --> -16 + 8 --> -16

you'd get a negative value, and the radical doesn't have a root for that.

so... the domain, or values "x" can safely take without making the square root expression a negative value, are 1 or below, for example, if we use say -5

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thus, (-∞, 1]
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