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meriva
3 years ago
13

A thermometer shows a temperature of Negative 20 and three-fourths degrees. A chemist recorded this temperature in her notebook

using a decimal. Which number did the chemist write in the notebook?
Negative 21.ModifyingAbove 4 with bar
Negative 21.ModifyingAbove 3 with bar
Negative 20.75
Negative 20.34
Mathematics
2 answers:
RoseWind [281]3 years ago
8 0

Answer:

C

Step-by-step explanation:

fredd [130]3 years ago
4 0

Answer:

The answer is C.

Step-by-step explanation:

3/4 is equal to 0.75. If you combine 0.75 with -20, then it is 20.75.

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C is the answer I believe

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quester [9]
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2. If x is directly proportional to y^3 and x=32 when y=2, i) Find an equation
svp [43]

Answer:

(i)

x \alpha y {3} \\ \frac{x}{y {3} }  = k

(ii)

\frac{x}{y {3}^{} }  =  \frac{x}{y {3}^{} }  \\  \frac{32}{ {2}^{3} }  =  \frac{x}{6 {}^{3} }  \\  \frac{32}{8}  =  \frac{x}{216} \\ x = 864

(iii)

\frac{32}{8}  =  \frac{108}{y {}^{3} }  \\   {y}^{3 }  = 27 \\ y =  \sqrt[3]{27 }  \\ y = 3

3 0
3 years ago
The diameter of a circle is 19 7/8". What is the circumference (to 2 decimal places)?
Alekssandra [29.7K]

Answer:

62.41

Step-by-step explanation:

19 7/8= 19.875

C= pie x d

C= 3.14 x 19.875

C= 62.4075

C= 62.41 (if you want 2 decimal places)

3 0
3 years ago
1,000 POINTS!!!!!!!!! I NEED HELP ASAP
babunello [35]

Answer:

x   ≥ -4

Step-by-step explanation:

-3x + 2 ≤ 14

Subtract 2 from each side

-3x+2-2  ≤ 14-2

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Divide each side by -3 .  Remember that dividing by a negative flips the inequality.

-3x/-3 ≥12/-3

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7 0
3 years ago
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