Answer:
y=474+2x
y=350+4x
Answer: x=62 y=598
Step-by-step explanation:
Place the two equations equal to each other.
350+4x=474+2x
Then Subtract 350 from 474 which gets you to 124.
4x=124+2x
Then subtract 2x from both sides.
Which make the equation look like this: 2x=124
Now divide 124 by 2.
so x=62.
Then you will need to plug in x in one of the equations to know what y is.
I plugged it into this one: y=474+2(62)
Now solve.
It should get you to the answer of 598.
So, overall x=62 while y=598.
4r-3+r+7=29
5r+4=29
5r=25
r=5
The answer is B
Answer:
The percent error rounded to the nearest tenth is 8.6%.
Step-by-step explanation:
The general equation for percent error is as follows: percent error = [(experimental value - actual value) / actual value] x 100. In this problem, her experimental value, or the expected score was 85%. However, her actual score was 93%. When we subtract the two values, we get a difference of 8 and when we divide this number by the actual value of 93, we get a quotient of .086. Multiplying this answer by 100 will give a final percentage of 8.6%.
Answer:
$14.93
Step-by-step explanation:
If the cost is per inch, then we need perimeter otherwise if the cost was per square inch we would have looked for the area.
Total cost=circumference* cost per inch
Circumference of a circle is given by
![C=2\pi r](https://tex.z-dn.net/?f=C%3D2%5Cpi%20r)
Where r is radius. Substituting 4.75 inch for r then
![C=2\pi\times 4.75=29.857142857142\\C\approx 29.86 inch](https://tex.z-dn.net/?f=C%3D2%5Cpi%5Ctimes%204.75%3D29.857142857142%5C%5CC%5Capprox%2029.86%20inch)
Cost=29.86*0.50=$14.93
The answer will be 75 divided by 7.
I know this because if Scott wants to give the same amount of candy to seven friends, he will have to divide the total amount of candy by the number of friends.
75/7 is 10 r 5. (We can solve this in our head because we know 7x10 is 70 and 70+5 is 75.)
The remainder is the amount he will have left.
R=5
Scott will have 5 pieces left.
Hope I helped! ;)