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velikii [3]
3 years ago
14

Help pls 20pts to best answer

Mathematics
1 answer:
krok68 [10]3 years ago
6 0
C=135+120+165+x+125+165+90=800+x= 900(all interior angles in heptagon)
900-800=100 
x=100

d=100+90+x+95+90=375+x= 540(all interior angles in a pentagon)
540-375=165
x=165
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What does 21÷3+(3×9)×9+5 equal? show work below plz
igor_vitrenko [27]
3x9=27
21/3 = 7
so
7+27x9+5
27x9=243
243+7+5
answer is 255
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iVinArrow [24]

Answer:

Step-by-step explanation:

The volume is calculated like:

V= length* hauteur* wide

V= 5* 2 3/4* 10 1/2

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3 years ago
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astra-53 [7]
Rates like $ per channel is a slope, "m". The added fee is a constant so it's the intercept "b".
y = mx + b

So for the first problem (9)
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the second problem (10)
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y = (3/4)x + b
use one of the points to find the y-intercept "b".

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9 = 3 + b
9 - 3 = b
6 = b
y = (3/4)x + 6

(b) when x = 16
y = (3/4)(16) + 6
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3 years ago
2. The city of Johnsonville was 1.5 inches of rain short of the normal amount for the year at the end of July. During the
Dafna11 [192]

Answer:

0.6 is the diference

Step-by-step explanation:

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