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Ilya [14]
3 years ago
9

Can absolute value be negative

Mathematics
1 answer:
emmasim [6.3K]3 years ago
3 0
No, only the value of what you are finding the absolute value of can be a negative. Examples: |-2|=2 |2|=2
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1A technical magazine stated that the mean retail cost of all models of a particular laptop was $600. A random sample of 10 stor
My name is Ann [436]

Answer:

Yes

Step-by-step explanation:

Given,

Population mean Z = 600

Sample mean, µ = 586.50

Size of the sample, n = 10

Standard deviation, σ = 26.77

The testing hypothesis is,

Null hypothesis = µ<600

Alternative hypothesis = µ≥600

The test statistics is the calculated value of Z,

(Z- µ)/(σ/√n)

= (600-586.50)/(26.77/√10)

= (13.5*3.1623)/26.77

= 42.691/26.77

= 1.5947

And at 5% level of significance, the table value of Z = 1.644

Here, calculated Z<Table value of Z, so we accept the null hypothesis.

So, the null hypothesis is accepted. The mean value of the laptop is less than 600.

3 0
3 years ago
for all values of x , a function f is defined by f(x)=x^2+7x+12 if f(a)=2, what could be the value of a?​
Evgesh-ka [11]

Answer:

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Step-by-step explanation:

We want f(a) = a^2 + 7a + 12 = 2. We can subtract 2 from both sides of this equation to get a^2+7a+10=0. We can factor this to get that (a+2)(a+5)=0. When the product of two numbers is equal to zero, one of the numbers must be equal to zero. This means that either a + 2 = 0, in which case a = -2, or a + 5 = 0, in which case a = -5.

4 0
2 years ago
Hank brought a fish tank
yaroslaw [1]
To find volume you do length*width*height
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3 years ago
Find the slope of the line passing through the given points ​
NNADVOKAT [17]

Answer:

-5/6

Step-by-step explanation:

Slope= y2-y1/x2-x1

3 0
2 years ago
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natulia [17]

<em>1</em><em>9</em><em>5</em>

Step-by-step explanation:

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8 0
2 years ago
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