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harina [27]
3 years ago
12

Help on my test very important

Mathematics
2 answers:
Rufina [12.5K]3 years ago
7 0

Hey buddy I am here to help!

The first one is false as the answer should be  diameter = 9cm

The second one i dont know sry

Hope it helps!

vichka [17]3 years ago
5 0
1. False, the diameter has to be bigger than the radius.
2. True, tangent lines have to be perpendicular.
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SOMEONE HELP ME WITH THISS
Katen [24]

Answer:

/_ 12 is the angle of depression from the firefighter to the second story window.

Step-by-step explanation:

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<em>#CarryOnLearning</em><em> </em>

7 0
2 years ago
Read 2 more answers
Calculate the amount of hcn that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.50ft.
Anarel [89]
Dimensions of the room in cm = 2.54 x 12 by 15 x 2.54 by 2.54 x 8.5 = 30.48 by 38.1 by 21.59

Volume of the room in cubic cm = 30.48 x 38.1 x 21.59 cubic cm = 25,072.21 cubic cm

Given that the density of air at room temperature is 0.00118g/cm^3, thus the mass of air in the room = 25,072.21 x 0.00118 = 29.59 g = 0.0296 kg

Given that the lethal dose of HCN is approximately 300 mg HCN per kilogram of air when inhaled, thus the <span>amount of HCN that gives the lethal dose in the small laboratory room is given by 300 x 0.0296 = 8.88 mg.</span>
7 0
3 years ago
What is 3. 2/15 simplified
coldgirl [10]
Hi there!

Okay, so I was a bit confused by your question, but I tried to make it a bit easier and work out.

There was two ways I did this because I didn't want to NOT answer your question!

What about this:

3.2/15 cannot be simplified lower than what it is. Decimal form is 0.2133333 (repeating). I answered this part because I didn't know what 3. was (I at first thought it was part of the numerator. But now that I look at it again it may have been a question number. But just in case, I answered it like this anyway.)

Next!

I solved 2/15, which also cannot be simplified down lower than what it is. It's decimal form is 0.133333 (another repeating decimal.)

And so as you can see I answered two problems for you. If these are incorrect, let me know!

Hope this helps!
7 0
3 years ago
Is 7x+14 equivalent to 7(1+x)?
morpeh [17]
No that’s equivalent to 7 + 7x
3 0
3 years ago
Read 2 more answers
Name a 2 digit odd number that is prime.name a 2 digit odd number that is compostite
e-lub [12.9K]
Prime for 2 digit odd number: 13 , 11 , 17, etc

Odd number that is composite: 39, 25, 15, etc


Hope this helps
7 0
3 years ago
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