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PtichkaEL [24]
3 years ago
10

(4+3)×10÷2+(5×6)????

Mathematics
1 answer:
rjkz [21]3 years ago
6 0
70
7 \times 10 \div 2 + 30
70÷2= 35 + 30 =65
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What is X for? x+20=35-4x
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What is the sum of all of the four-digit positive integers that can be written with the digits 1, 2, 3 and 4 if each digit must
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Answer with explanation:

Number of four digit numbers using four distinct digit

         =Unit placed can be filled in four ways * Tens place can be filled in Three ways * Hundreds place can be filled in 2 ways * Thousand Place can be filled in a single way

=4*3*2*1

=24 distinct numbers

Sum of all four , four digits numbers using 1,2,3,4

          = (If we keep 4 at unit place +Keeping 3 at unit place +Keeping 2 at unit place+Keeping 1 at unit place)×6+At tens place (2*2+3*2+1*2+4*2+2*2+1*2+1*2+3*2+4*2+2*2+3*2+4*2)+At hundred's place (2*2+3*2+1*2+4*2+2*2+1*2+1*2+3*2+4*2+2*2+3*2+4*2)+At thousand's Place(2*2+3*2+1*2+4*2+2*2+1*2+1*2+3*2+4*2+2*2+3*2+4*2)

=(24+18+12+6)Unit place+(60)Ten's place +(60)Hundred's place+(60)Thousand's Place

=66660

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3 years ago
Which statement is true about setting up a proportion to solve for the missing measure?
LiRa [457]

Answer: B)

Corresponding parts must be in the same position.

Step-by-step explanation:

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Please help me solve this question
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Answer:

50

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Use pythagoreom theorem to determine the length of the hypotenuse:

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Now square root both sides to isolate side c:

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side c = 50

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2.) Find the measure of exterior angle X:
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