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Elan Coil [88]
3 years ago
10

Which pairs of numbers has have a greatest common factor of 7

Mathematics
1 answer:
vodomira [7]3 years ago
8 0
14


need more letters
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What is the sum if the first 22 terms of the following series? 86 + 79 + 72 + 65 +58+...
Arturiano [62]
Seems to be an arythmetic sequence
Sn=[n(a1+an)]/2
where
Sn means sum of all terms up the nth term
n=number of terms
a1=first term
an=nth term

so from 86 to the 22th term is from a1 to a22

find teh sequence
miknus 7 each time
an=a1+d(n-1)
an=87-7(n-1)
find 22n term
a22=87-7(22-1)
a22=87-7(21)
a22=87-147
a22=-60

S22=[22(87-60)]/2
S22=[22(27)]/2
S22=594/2
S22=297

the sum is 297

5 0
3 years ago
Two cars got an oil change at the same auto shop. The shop charges customers for each quart of oil plus a flat fee for labor. Th
amm1812
(5,22.45),(7,25.45)
slope = (25.45 - 22.45) / (7 - 5) = 3/2 or 1.5

y = mx + b
slope(m) = 1.5
use either of ur points...(5,22.45)...x = 5 and y = 22.45
now sub and find b
22.45 = 1.5(5) + b
22.45 = 7.5 + b
22.45 - 7.5 = b
14.95 = b

so ur equation is : y = 1.5x + 14.95.......this means that each quart of oil costs $ 1.50 and the labor fee costs $ 14.95
3 0
3 years ago
4-d= -(d -4 ) -no solution infinitely many solutions -one solutions -two solutions​
a_sh-v [17]

Answer: infinite solutions

Step-by-step explanation: any value of d makes the equation true. By simplifying the right side, we get -d + 4, which is the same as 4 - d, so we essentially get 4 - d = 4 - d.

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3 years ago
Find the measures of the missing angles <br><br><br><br> Help pleaseee
kondaur [170]

Answer:

Nwm miałem to dawno powodzenia

6 0
2 years ago
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Write the Equation of the line that is parralel to the linear equation in question 1 and passes through the point (3,7)
BlackZzzverrR [31]
Where’s question 1? And the question
4 0
2 years ago
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