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ipn [44]
4 years ago
6

Heeeeeelllp please. 15 points

Mathematics
2 answers:
Kamila [148]4 years ago
8 0
12/BD = 15/25
BD = 25*12 / 15
BD = 20

BF / 30 = 15/25
BF= 30*15/25
BF = 18

answer
 is C. BD = 20
storchak [24]4 years ago
5 0
The correct answer is the first one 
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Step-by-step explanation:

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3 years ago
To Rationalize the denominator of 5-√7/9-√14, you should multiply the expression by which fractions?
beks73 [17]

<u>Answer</u>

9+√14


<u>Explanation</u>

To Rationalize the denominator of 5-√7/9-√14.

To rationalize this we multiply both the denominator and denominator by the conjugate of the denominator.

The denominator is 9-√14 and its conjugate is (9+√14).

(5-√7)/(9-√14) = (5-√7)(9+√14)/(9-√14)(9+√14)

                        =  (5-√7)(9+√14)/(9²-14)

                       = (45 + 5√14 - 9√7 - √98)/(81-14)

                        =  (45 + 5√14 - 9√7 - √98)/67

                        = (45 + 5√14 - 9√7 - 7√2)67

This is the rationalized expression.  

The denominator is (9-√14) and its conjugate is (9+√14).

8 0
4 years ago
Read 2 more answers
a sack of potatoes weighs 14 pound 9 ounces. after wendy makes potato salad for a picnis, the sack weighs 9 pounds 14 ounces. wh
olganol [36]
14 pounds 9 ounces = 233 ounces
9 pounds 14 ounces = 158 ounces

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4 0
3 years ago
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Tpy6a [65]

Answer:

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Step-by-step explanation:

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