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3 years ago

The surface area of an open-top box with length L, width W , and height H can be found using the formula :A=2LH+2WH+LW

Mathematics

1 answer:

serg [7]3 years ago

4 0

Answer:

162 cm

Step-by-step explanation:

The formula is A=2(wl+hl+hw), your teacher just wrote it in a diffrent order but it's the same. Plug it in to get 2×(3×7+6×7+6×3). Calculate.

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The price of a notebook was $3.30 yesterday. Today, the price rose to $3.80. Find the percentage increase. Round your answer to

Alex_Xolod [135]

7.1% subtract the final price by the original price to find the increase and then divide the increase by the original price.

Explanation:

Find the increase

3.75−3.50=.25

Then divide the increase by the original amount

.253.50=.0714285

To change to a percent multiply by 100 and round off to significant numbers

# .0714285 = 7. 14285% or 7.1% or just 7%

3 0

3 years ago

A study wanted to assess the accuracy of self-reported smoking status. Participants are asked whether they currently smoke or no

HACTEHA [7]

Answer: a) 0.7878, b) 0.8723

Step-by-step explanation:

Since we have given that

Nicotine present Nicotine absent

Self-reported non smoker 82 14

Self-reported smoker 12 52

(a) What is the sensitivity of the self-reported smoking status?

$P(smoker|Nicotine\ present)=\dfrac{52}{52+14}=\dfrac{52}{66}=0.7878$

(b) What is the specificity of the self-reported smoking status?

$P(Non-smoker|Nicotine\ absent}=\dfrac{82}{82+12}=\dfrac{82}{94}=0.8723$

Hence, a) 0.7878, b) 0.8723

4 0

3 years ago

Expand the logarithm. log₅ 5x⁻⁵<br><br> PLS HELP!

dimulka [17.4K]

Recall that logab=loga + logb

log₅5x⁻⁵=log₅5+log₅x⁻⁵=1-5<span>log₅x</span>.

3 0

3 years ago

All these questions please

den301095 [7]

Image is very fade, I can't see the question!

8 0

4 years ago

PLEASEE HELP AND SHOW WORK IF YOU CAN

Vera_Pavlovna [14]

Answer:

M=54.62

O=59.69

N=65.68

Step-by-step explanation:

M is the smallest, and N is the largest:)

you can use cossincalc . com !!

4 0

3 years ago