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Maslowich
3 years ago
11

A thermometer measures temperature to the nearest 0.5°C. Which measurement shows an appropriate level of precision for the therm

ometer?
A. 14°C
B. 14.5°C
C. 15°C
D. 14.55°C
Mathematics
2 answers:
Scrat [10]3 years ago
7 0

Answer:

The correct answer is B. 14.5° C

Step-by-step explanation:

Level of precision is =  VALUE ± ERROR

= 14 ± 0.5

= 14.5 0R 13.5

13.5 is rejected as it is less than the measured value so the required level of precision is 14.5° C

So, the right answer is 14.5° C


PilotLPTM [1.2K]3 years ago
5 0

14.5°C as the least account is only 0.5 so the

Accurate value= value +- 0.5

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22. If the measure of angle 2 is 35°, what is the measure of angle 6?
ArbitrLikvidat [17]

Answer:a.35 degrees b. 145 degrees

Step-by-step explanation: angle 2 and angle 6 are equal they are corresponding

Angle 2 and angle 8 are supplementary they equal 180. So 180-35=145

6 0
3 years ago
A water tank is in the shape of a cylinder with a diameter of 20 feet and a height of 20 feet. The tank is 70% full. About how m
fomenos

Answer:

32901 gallons

Step-by-step explanation:

First, we find the volume of the cylindrical water tank when it is full.

The volume of a cylinder is given as:

V = \pi r^2h

where r = radius and h = height of the cylinder

The diameter of the tank is 20 feet, hence, its radius is 10 feet.

Volume, V, is therefore:

V = \pi * 10^2*20 = 6283.19 ft^3

This is the volume of the tank, when it is full.

When it is 70% full, the volume will be:

\frac{70}{100} *  6283.19 = 4398.23 ft^3

1 cubic foot (ft^3) is 7.48 gallons.

Therefore, the volume of the 70% full tank in gallons will be:

4398.23 * 7.48 = 32901.05 gallons ≅ 32901 gallons

The tank contains 32901 gallons of water.

7 0
3 years ago
Read 2 more answers
16. Calculate the following logarithms.<br> a. log5(25)
stellarik [79]

Answer:

The answer to your question is: 2

Step-by-step explanation:

Logarithms is a number to which a base must be powered to give another number.

In this example, 5 is the base and must be powered to give 25.

Then, to obtain 25, the power must be 2 because 5² = 25.

6 0
3 years ago
PLEASE HELP ME ASAP
Artemon [7]

Answer:

x<-6

Step-by-step explanation:

3 0
3 years ago
How do I solve this? Please show steps clearly so i can understand, thank you
Lesechka [4]

Answer:

The value of x=8.

Step-by-step explanation:

Given:

\frac{x+3}{x}-\frac{x+1}{x+4}=\frac{5}{x}

We need to solve this equation.

Solution:

First combining equation having same denominators we get;

\frac{x+3}{x}-\frac{5}{x}=\frac{x+1}{x+4}

Now denominators are common so we will solve the numerators we get;

\frac{x+3-5}{x}=\frac{x+1}{x+4}\\\\\frac{x-2}{x}=\frac{x+1}{x+4}

Now by cross multiplication we get;

(x-2)(x+4)=x(x+1)

Now Applying distributive property we get;

x^2+4x-2x-8=x^2+x\\\\x^2+2x-8=x^2+x

Now Combining the like terms we get;

x^2+2x-x^2-x=8\\\\x=8

Hence on solving we get the value of x=8.

3 0
3 years ago
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