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Crazy boy [7]
3 years ago
15

At higher elevations water boils at lower temperatures. The temperature at which water boils is called the boiling point of wate

r. At sea level the boiling point of water is 100oC, while at 2 kilometers of elevation (about 6550 feet) the boiling point of water is 94oC. The function that gives the boiling point of water in oC, B
B
, at an elevation of x
x
kilometers is B(x)=100−3.5x
B(x)=100-3.5x
.

Determine the elevations at which the boiling point of water is between 84 oC and 96 oC. Give your answer accurate to 1 decimal place.
Mathematics
1 answer:
Leya [2.2K]3 years ago
7 0
B(x) = 100 - 3.5x
84 = 100 - 3.5x
3.5x = 100 - 84 = 16
x = 16/3.5 = 4.6 kilometers

96 = 100 - 3.5x
3.5x = 100 - 96 = 4
x = 4/3.5 = 1.1 kilometers

Therefore, the boiling point of water is between 84°C and 96°C at elevations of between 4.6 kilometers and 1.1 kilometers.
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5-2(3z+2)=-4(1-2z) please help lol
Sveta_85 [38]

Answer:

z= 5/14

Step-by-step explanation:

Let's solve your equation step-by-step.

5−2(3z+2)=−4(1−2z)

Step 1: Simplify both sides of the equation.

5−2(3z+2)=−4(1−2z)

5+(−2)(3z)+(−2)(2)=(−4)(1)+(−4)(−2z)(Distribute)

5+−6z+−4=−4+8z

(−6z)+(5+−4)=8z−4(Combine Like Terms)

−6z+1=8z−4

−6z+1=8z−4

Step 2: Subtract 8z from both sides.

−6z+1−8z=8z−4−8z

−14z+1=−4

Step 3: Subtract 1 from both sides.

−14z+1−1=−4−1

−14z=−5

Step 4: Divide both sides by -14.

−14z/ = -5

−14      -14

=5/14

z= 5/14

3 0
3 years ago
Answer fast plzzzzzzzzz
SCORPION-xisa [38]

Answer:

0.5

Step-by-step explanation:

0.6 - 0.1 = 0.5

6 0
3 years ago
Can someone plz help me!??!
Vaselesa [24]
To solve for x, you simplify both sides of the equation and then isolate the variable.

<em>10x + 12 = $72.00</em>
<em>x = 6</em>

Six people attended the concert.
<em>Check the answer:
(10 • 6) + 12 = 72.00
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_____________________________________________________________
<u>Answer: x = 6</u></em>
8 0
4 years ago
What is the Value of (-0.5) (-7.0)?
tigry1 [53]

Answer:

3.5

Step-by-step explanation:

Hope this helped! :)

3 0
3 years ago
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How do the prefixes in the metric system relate to the basic units?
WITCHER [35]
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besides, it is used  so that you can express very large and very small numbers in a short unambiguous manner.
Example Instead of saying "three thousand million" meters
They classify the decimal place of the basic unit. ie, the meter is classified with milli (1/1000), centi(1/100), deci (1/10), Deca (10), Hecto (100), Kilo (1000).
4 0
4 years ago
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