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stealth61 [152]
3 years ago
9

PLEASE HELP!!!! ON TIME LIMIT!!!!!

Mathematics
1 answer:
ryzh [129]3 years ago
8 0
The answer is D) 
8 x 5.5 = 44
6 x 5.5 = 33
Perimeter: 44 + 44 + 33 + 33= 154
Area : 44 x 33 = 1,452 
Mark brainiest plz 
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If a/\2+1/a/\2=11, then a+1/a=?
Nadya [2.5K]

Answer:

\pm \sqrt{13}

Step-by-step explanation:

\bigg(a +  \frac{1}{a}  \bigg)^{2} =  {a}^{2}   +  \frac{1}{ {a}^{2} }  + 2 \times a \times  \frac{1}{a}  \\  \\ \bigg(a +  \frac{1}{a}  \bigg)^{2} = 11 + 2 \\  \\   \bigg(a +  \frac{1}{a}  \bigg)^{2} = 13 \\  \\  \bigg(a +  \frac{1}{a}  \bigg) =  \pm \sqrt{13}

5 0
3 years ago
A survey of 391 children given at a local elementary school showed that 150 like chocolate ice cream 125 like pistachio ice crea
creativ13 [48]

Answer: The correct answer is 341 children

Step-by-step explanation:

Firstly you solve for the number of children that like both types of ice cream.

Let us assume it to be x

(150 - x )+ x + (125 - x) + 166 = 391

150 + 125 + 166 - x + x - x = 391

441 - x = 391

X = 441 - 391

X = 50

Since 50 children like at least one type of ice cream, subtracting it from the total no. of children will give the number of children that like at most one type

Therefore, 391 - 50 = 341 children

Alternatively,

Sum up children who like only chocolate ice cream + pistachio ice cream only + does who don't like any type of ice cream

= (150 - 50) + (125 - 50) + 166

= 100 + 75 + 166

= 341 children

7 0
3 years ago
Why is it useful to factor polynomial expressions for a given scenario?
tatyana61 [14]
To determine the roots or the zeros of the polynomial. These are the  x-intercepts.
8 0
3 years ago
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The sears tower in chicago is 1450 feet high. a model of the tower is 24 inches tall what is ratio
Semenov [28]
Convert 1450 feet to inches = 1740 inches

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24/1740 = 2/145 .....This is the ratio of the model to the tower in inches. 
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3 years ago
A. How does using more loops of wire in an electromagnet affect the strength of the
lyudmila [28]
It can increase the field because of the loops around the electromagnet like a conductor which can amplify the magnetic field making it go further
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3 years ago
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