Answer:
Step-by-step explanation:
To solve for the interior angles for a polygon,
subtract 2 from the number of sides then multiply with 180
i.e, (n-2)180
e.g, in the case of a triangle, (3-2)180 = 1*180 = 180
As for square, (4-2)180 = 2*180 = 360
Hope u understand.
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Answer:
2x-106
Step-by-step explanation:
-7(x+10)+9(x-4)
Expand parentheses:
-7x-70+9x-36
Combine like terms:
2x-106
Hope this helps!
The amount of heat lost by the water is 1870 calories
Step-by-step explanation:
The amount of heat released by a substance is given by the equation
where
Q is the amount of heat lost
m is the mass of the substance
C is the specific heat capacity of the substance
is its change in temperature
In this problem, we have:
m = 85 g is the mass of water
is the specific heat capacity of water
is the change in temperature of the water
Substituting, we find
Learn more about heat:
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I'll try to help you round these numbers
37 rounded to Tens will be 40
because 7 is bigger than 3 so the 7 will change the 3 to a 4 and the 7 will be a 0.
29 rounded to Tens will be 30
because the 9 is bigger than 2 so it will change the 2 to a 3 and the 9 will be a 0. Just like 37 rounded into a 40.
669 rounded to Hundreds will be 700
Its 700 because the 9 is bigger and it will change the 6 beside it to a 10 which means that the 9 will be a 0. The 6 that turned to a 10 will turned will be a 0 because your carry the 1 to the other 6 which would turn to a 7 and the two numbers behind 7 will be 0's which makes that be 700.
9,492 rounded to Thousands will be 9,000
Ok this is 9,000 because the 4 is smaller than 9 which the 9 will become the bigger person and turn all the little numbers thats behind it to 0's and even that 9 between the 4 and the 2. So thats why its 9,000.
Hope this helps!
The formula for simple interest is <em>I</em> = <em>prt</em>, where <em>I </em>is the amount of interest, <em>p</em> is the principal invested, <em>r</em> is the rate as a decimal number and <em>t</em> is the amount of time. Substituting our given information we have
128 = <em>p</em>(0.016)(2) ----- 1.6% = 1.6/100 = 0.016
128 = <em>p</em>(0.032)
Divide both sides by 0.032:
128/0.032 = <em>p</em>(0.032)/0.032
4000 = <em>p</em>
He needs to invest $4000.
