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vodka [1.7K]
4 years ago
11

What is the sum of 6 feet 10 inches and 8 feet 9 inches?

Mathematics
2 answers:
Arte-miy333 [17]4 years ago
7 0
B. 15ft. 7in. 

Add the smaller measurement first, which in this case is inches. So you should have 19in. Then add feet, 14ft. Currently we have 14ft and 19in. But 19in can be simplified, since 12in is one foot. So take one foot out of 19 in and you have 7inches left. Add that one to 14. And in the end you should have 15ft and 7in. 
vivado [14]4 years ago
6 0
Lets first convert everything to inches.

6 feet= 12*6 = 72 + 10 = 82 inches
8 feet= 12*8 = 96+9 =  105 inches

Now add!

82+105 = 187

Now convert them back to feet.

187/12 = 15 feet

12*15 = 180

187 - 180 = 7 inches

15 feet. 7 inches. 

Final answer: B. 15 ft. 7 in.
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Artemon [7]

Answer:

The m∠YXW is 125°.

Addition equation: m∠YXW = m∠YXZ + m∠ZXW = 85° + 40° = 125°

Step-by-step explanation:

To find the m∠YXW you would need to add the m∠YXZ and m∠ZXW together:

m∠YXW = m∠YXZ + m∠ZXW = 85° + 40° = 125°

4 0
3 years ago
Suppose that the dollar cost of producing x radios is c(x) = 400 + 20x - 0.2x 2. Find the marginal cost when 30 radios are produ
My name is Ann [436]
C(x) = 400 + 20x - 0.2x²

c(30) = 400 + 20(30) - 0.2(30)²

= 400 + 600 - 0.2(900)
= 1000 - 180
= 820

It costs $820 when 30 radios are produced. 

Marginal cost is how much it would cost to make one MORE of the same product so now we find how much it costs to produce 31 radios and compare the two. 

c(31) = 400 + 20(31) - 0.2(31)²

= 400 + 620 - 0.2(961)
= 1020 - 192.2
= 827.8 or ≈828.

Now we find the difference which means we subtract the two. 

828 - 820 = 8. 

Your marginal cost is $8. 

To compare we can also do 29 radios. 

c(29) = 400 + 20(29) - 0.2(29)² = 811.8 or ≈812

820 - 812 = 8. 
7 0
3 years ago
Please someone help me out on this
valentinak56 [21]

Answer:

I think it is C

Step-by-step explanation:

   

im  sorry if i am wrong    

6 0
3 years ago
Read 2 more answers
I need help answer 6 through 7 I can't figure them out
seropon [69]
6. the answer is 4. because u find the diameter by dividing by 2. 
7. answer = 8 , the radius is 4 . so u need to multiply 2 times 4. 2 times 4 =8.
6 0
3 years ago
Please help me!!
Ratling [72]

Answer:

E=1/2mv2, v/10./17

Step-by-step explanation:

<h2>i need brainlest <3</h2>
4 0
3 years ago
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