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77julia77 [94]
2 years ago
9

Evaluate 4x + 5y, when x = 7 and y = 10

Mathematics
2 answers:
cricket20 [7]2 years ago
6 0
You plug in the 7 for x and 10 for y in the equation 4(7)+5(10)=78
TEA [102]2 years ago
3 0

Answer:

78

Step-by-step explanation:

4(x) = 4(7) = 28        5(x) = 5(10) = 50

28+50=

78

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Brut [27]

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It is 7 devided by 11

0.6363636363

Step-by-step explanation:

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Step-by-step explanation:

3 0
3 years ago
8×{[(7+4)×2]-[(11-7)×4]}
TEA [102]
Solve in the brackets first. then the rest so...
8*{[(7+4)*2]-[(11-7)*4]}      <-- this is the starting equation
8*{[(11)*2]-[(4)*4]}       <-- here i solved the inner most brackets which was 7+4 and 11-7
8*{[22]-[16]}    <-- then i multiplied 11 by 2 to get 22 and 4 by 4 to get 16
8*{6}    <-- here i subtracted 16 from 22 to get 6
48     < and then the answer which i got by multiplying 6 and 8
**note: keep BEDMAS/BODMAS in your mind. u solve the inner most brackets first and then you move outside. 
48 is the answer
hope it helped :)
4 0
3 years ago
Х<br> 120<br> 50<br> What is the value of x?
lara [203]

Answer:

60

Step-by-step explanation:

180-120= 60

a line is 180 degrees and x is congruent to the angle on the right of 120, meaning if you find the missing angle to that angle(the one next to 120) then you'd get the answer. Knowing the line it 180 and 120 is supplementary to x. x=60.

6 0
3 years ago
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