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Ahat [919]
3 years ago
8

Twice the difference of 3x and y increased by 5 times the sum of x and 2y

Mathematics
1 answer:
Phantasy [73]3 years ago
8 0
The answer is 2(3x-y)+5(x+2y).
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What is the missing number in this pattern
Delvig [45]

The missing number is 29

8 0
3 years ago
1) Omar has scored 85, 71, and 77 on the first three exams in his math class. If the standard 70,80,90 scale is used for grades
Rus_ich [418]

Answer:

a. 47

b. 87

c. 127

Step-by-step explanation:

Assume a total of 4 exams ( first 3 plus a final)

Let final score be X,

Hence,  average score = (85 + 71 + 77 + x) / 4 = (233 + x) / 4

a) to get a C, the average score must be 70

70 = (233 + x) / 4

(233 + x) = 70 (4) = 280

x = 280 - 233 = 47 (Ans)

b) to get a B, the average score must be 80

80 = (233 + x) / 4

(233 + x) = 80 (4) = 320

x = 320 - 233 = 87 (Ans)

c) to get a A, the average score must be 90

90 = (233 + x) / 4

(233 + x) = 90 (4) = 360

x = 360 - 233 =  127 (Ans)

6 0
3 years ago
Please help find the missing length
Novosadov [1.4K]

Answer:a²=b²+c² in a right angle triangle so answer is root 136

Step-by-step explanation:

7 0
3 years ago
Can someone please help me with this!?!?!
lys-0071 [83]
They are congruent because of the angles, which means the congruency reason should be SAS.
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3 years ago
−62 − (−25)=<br> A) (-87)<br> B) (-37)<br> C) 37<br> D) 87
vaieri [72.5K]

The answer is B) (-37)


3 0
3 years ago
Read 2 more answers
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