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choli [55]
3 years ago
10

What is the principal square root of 16? O A. 2 O B. -4 O C. -2 O D. 4

Mathematics
2 answers:
KATRIN_1 [288]3 years ago
7 0

Answer:

D. 4

Step-by-step explanation:

We know that the square of (+4) is 16 and also for (—4) is 16. We normally takes interest in positive square value for a square root. Therefore, The principal square root of 16 is 4

zmey [24]3 years ago
4 0

Yo se que es eso si no pues ni modo XD

D.4

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5. Average (missing value). The temperature at the top of Mt. Hood in Oregon was recorded for 5 straight days. For the first fou
Nata [24]

Answer:

5°F

Step-by-step explanation:

Given that the average is obtained from;

Average = sum of scores / number of scores

Average temperature = 19.8°F

Let the temperature of the fifth day be x

Hence;

19.8 = 32 + 30 + 22 + 10 + x/5

19.8 = 94 + x/5

x= (5×19.8) -94

x= 5°F

4 0
3 years ago
A truck uses 1 tablespoon of gasoline to drive 125 yards. How many miles can the vehicle travel per gallon?
Alborosie

Answer:

18.18 miles.

Step-by-step explanation:

A truck uses 1 tablespoon of gasoline to drive 125 yards.

Now, 1 gallon of gasoline contains 256 tablespoons of gasoline.

So, the truck uses 1 gallon i.e. 256 tablespoons of gasoline to drive (256 × 125) = 32000 yards.

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Therefore, the truck uses 1 gallon of gasoline to drive \frac{32000}{1760} = 18.18 miles. (Answer)  

8 0
3 years ago
Combine like terms and simplify 4r - 6 - 2r + 5
murzikaleks [220]
C. 10r-3


Because 2r+5=7, the minus 6 and 7 which gives you 1 then minus 4 and 1 witch is 3 then you do 10r-3 and it will get you to 2r+5=7 again. I hope this helped!
4 0
3 years ago
What expression can be used to find the total discount? Select all that apply. 0.3*42 or 3/10*42 or 0.03*42 or 3 *4.2
ehidna [41]

0.3*42   this gives you a 30% discount

3/10*42  this gives you a 30% discount

0.03*42 this gives you a 3% discount

3 *4.2  This is not a  discount

6 0
3 years ago
The elevator in the Empire State Building can pass 80 floors in 45 seconds. How many floors can it pass in 9 seconds?
castortr0y [4]
\bf \begin{array}{ccll}
floors&seconds\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
80&45\\
f&9
\end{array}\implies \cfrac{80}{f}=\cfrac{45}{9}\implies \cfrac{80\cdot 9}{45}=f
7 0
3 years ago
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