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3 years ago

Use the picture to answer. Which real number is not both an integer and a whole number?

Mathematics

2 answers:

Korolek [52]3 years ago

8 0

A is the correct answer because negative number is know as intergers but not a whole number!!

Yuki888 [10]3 years ago

6 0

A. -38
The number -38 is not an integer, as all integers are any whole positive number. It is not a whole number also because it has no fractional value.

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What is the square root of 28

GrogVix [38]

Answer:5. 291503

Step-by-step explanation:

√28

2√7

5. 291503

8 0

3 years ago

If f(x)=3x^2+15, what is the value of f(4).

nignag [31]

f(4) = 3×4^2+15

4^2=16

3×16

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7 0

4 years ago

Read 2 more answers

The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sam

irina [24]

Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)

Step-by-step explanation:

Since we have given that

n = 75

mean = 1014 hours

Standard deviation = 25 hours

At 95% two sided , z = 1.96

So, confidence interval would be

$\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.96\dfrac{25}{\sqrt{75}}\\\\=1014\pm 5.658\\\\=(1014-5.658,1014+5.658)\\\\=(1008.34,1019.658)$

(b) Construct a 95% lower confidence bound on the mean life.

z = 1.65

So, confidence interval would be

$\bar{x}\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.65\times \dfrac{25}{\sqrt{75}}\\\\=1014\pm 4.76\\\\=(1014-4.76,1014+4.76)\\\\=(1009.24,1018.76)$

Hence, a) (1008.34,1019.658) b) (1009.24,1018.76)

4 0

4 years ago

How to solve for axis of symmetry for y=(x+2)(x-4)

lianna [129]

Answer:

x = 1

Step-by-step explanation:

you can first find the two zeroes

that would be

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x - 4 = 0

x = {-2, 4}

then you average them

-2 + 4 = 2

2 / 2 = 1

the aos is 1

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2 years ago

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nadezda [96]

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3 years ago