<span> rounding to the nearest cent " means rounding to the nearest hundredth....so the answer is 329.18 </span>
0.05 * 0.75
5*75 = 375
since we're multiplying decimals, the rule of thumb is use as many zeros to the right of the decimal as there are summed between the two values being multiplied . . .
0.<u><em>0</em></u>5*0.75
<u><em>answer is 0.0375</em></u>
This is a simple system of equations. We first write the words in math as 4x + 6y = 36 and 5y - 3x = 49.
Now we isolate 5 in the second equation to get 5y = 49+3x or y=(49+3x)/5. We can now substitute our value for y into our first equation and simplify.
4x + 6y = 36 is the same as 4x+6((49+3x)/5) = 36. This can be simplified to 4x+(294+18x)/5 = 36, which is the same as 20x+294+18x = 180. We can combine like terms to get 38x +294 = 180 or 38x = -114. Now we divide by 38 on both sides to get x = -3.
Now that we have our value for x, we substitute that value into the second equation and solve for y.
5y - 3x = 49 is the same as 5y - 3(-3) = 49 or 5y+9 = 49. This can be simplified to 5y=40 or y=8.
Our values for x and y are -3 and 8. Hope this helps!
<span>There we multiply by 6 because there are six sides in a polygon
</span>6* (2.6*3/2)
= 6* 3.9
= 23.4
Therefore the answer will be option b (23.4)
Hope it helped you.
If it helped please mark as the brainliest answer.
Answer:
C
Step-by-step explanation:
Since the triangles are similar then the ratios of corresponding sides are equal, that is
= , substituting values
= ( cross- multiply )
21x = 7(24 - x) ← distribute
21x = 168 - 7x ( add 7x to both sides )
28x = 168 ( divide both sides by 28 )
x = 6 → C