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2 years ago

Find the total surface area of this cuboid.

Mathematics

1 answer:

makkiz [27]2 years ago

6 0

Answer:

120cm

Step-by-step explanation:

it 120 cm because of length×with×hight

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Which type of data would be best displayed in a box plot?

Tanya [424]

Answer:c

Step-by-step explanation:i took the test

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2 years ago

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How can you add, subtract, and multiply with decimal

kifflom [539]

To add or subtract you do what you would normally do then put
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3 years ago

Step by step how to solve this equation by completing the square<br> x^2-16x+-60

anygoal [31]

Answer:

Step-by-step explanation:

x^2-16x+60

(x-6)(x-10) factor the equation

x-6=0

x=6

x-10=0

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2 years ago

Find the area of quadrilateral with vertices at points (3,0)(4,5)(-1,4)(-2,-1)

guapka [62]

Answer: 20

Step-by-step explanation:

Let 's complete our quadrilateral to a rectangle ; and subtract from it the area highlighted in red

$\displaystyle \rm S_{\diamond}=6\cdot 5 =30 \\\\ S_{ABCD}=30-(5:2+5:2+5:2+3:2+1\cdot1)=30-(7,5+1,5+1)=\\\\30-10=20 \\\\ S_{ABCD}=20$

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2 years ago

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A local company wants to evaluate their quality of service by surveying their customers.

stich3 [128]

Answer: b. 0.98

Step-by-step explanation:

The formula to find the maximum error of the estimated mean :

$E=z^*\dfrac{\sigma}{\sqrt{n}}$ (1)

, where $\sigma$ = standard deviation

n= Sample size

z* = Critical z-value.

As per given , we have

$\sigma=5$

n=100

Critical value for 95% confidence interval = z*=1.96

Put these values in the formula (1), we get

$E=(1.96)\dfrac{5}{\sqrt{100}}$

$E=(1.96)\dfrac{5}{10}=0.98$

Hence, the maximum error of the estimated mean quality for a 95% level of confidence is 0.98.

Therefore , the correct answer is b. 0.98 .

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2 years ago

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