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Agata [3.3K]
4 years ago
8

Please help!! It’s for chemistry

Mathematics
1 answer:
sergey [27]4 years ago
4 0
I can help, which question do you need help in?
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Which describes how to calculate the range of this data set?
DENIUS [597]
The answer would be
B. Subtract 12 - 4

(Hope this helps)
7 0
4 years ago
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Which of the following has a unit rate of
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Divide m (miles) by h (hours) to get your answer
85/5=17
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3 years ago
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Marissa has a yard service to help people in her neighborhood. She earns $15 for each lawn she mows, $10 for each yard she weeds
sashaice [31]

Answer:

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Step-by-step explanation:

5 0
3 years ago
54 divided by _____ = -27
Nikitich [7]

54/-2 = -27

First, let's rewrite:

Let x represent the unknown number:

\frac{54}{x}=\text{ -27}

\begin{gathered} \frac{54}{x}\text{ = -27} \\ 54\text{ = -27x} \\ \text{Divide both sides by -27} \\ \frac{54}{-27}=\text{ }\frac{-27x}{-27} \end{gathered}\begin{gathered} 27\times2\text{ = 54} \\ x\text{ = -2  (because we are dividing positive number by a negative number)} \\ So\text{ our answer will be negative} \end{gathered}

Hence, 54/-2 = -27

6 0
1 year ago
Two concentric circles are of radii 5 cm and 3 cm. Determine the length of the chord of the larger circle which touches the smal
tangare [24]

Answer:

Let O be the common center of two concentric circles and let AB be a chord of larger circle touching the smaller circle at P join OP

Since OP is the radius of the smaller circle to any chrod of the circle bisects the chord.

∴ AP=BP

In right ΔAPO we have

OA  

2

=AP  

2

+OP  

2

⇒25−9=AP  

2

 

⇒AP  

2

=16⇒AP=4

Now AB=2,AP=2×4=8[∵AP=PB]

hence the length of the chord of the larger circle which touches the smaller circle is 8cm.

Step-by-step explanation:

6 0
2 years ago
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