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2 years ago

5

Diego measured the length of an eraser to be 6 cm. The actual length of the eraser is 6.5 cm. Which of these is closest to the p

ercent error for Diego's measurement? Please help!!

1 answer:

vovikov84 [41]2 years ago

7 0

Answer:

7.69%.

Step-by-step explanation:

Percentage error = (0.5/6.5) * 100

= 7.69%.

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7b + 3 – 4b = 3 – 3(b + 4)

svlad2 [7]

Hello from MrBillDoesMath!

Answer: b

Discussion:

7b + 3 - 4b = 3 - 3(b+4) =>

7b + 3 - 4b = 3 - 3b -12 =>

(7b - 4b) + 3 = -3b - 9 =>

3b + 3 = -3b -9 => Add 9 to both sides

3b + 12 = -3b -9 + 9 =>

3b + 12 = -3b => ( add 3b to both sides)

6b + 12 = 0 => (subtract 12 from both sides)

6b = -12 =>

b = -12/6 = -2

Thank you,

MrB

7 0

2 years ago

(a) Fiona has $450 in her savings account. She deposits $40 each month. Liam has $975 in his checking account. He writes a check

kenny6666 [7]

Answer:

y=450+40x y=975-65x

Step-by-step explanation:

at five months they will have the same amount of money in their accounts

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2 years ago

Which of the following is the ratio of boys to girls in tamir's math class?

WARRIOR [948]

The answer for your question is 12/15

4 0

2 years ago

Read 2 more answers

Match the change in the position of the minute hand with the angle made by the change

Alona [7]

Answer:

picture?

Step-by-step explanation:

3 0

3 years ago

The volume of a cylinder is given by the formula v= m'h. where r is the radius of the cylinder and h is the height.

Verdich [7]

Answer:

The Volume of cylinder is: $\mathbf{Volume=2\pi x^3-5\pi x^2-24\pi x+63\pi }$

Option B is correct option.

Step-by-step explanation:

We are given:

Volume of cylinder = h = 2x+7

Radius of cylinder = r = x-3

We need to find volume of cylinder

The formula used is: $Volume=\pi r^2h$

Putting values and finding volume

$Volume=\pi r^2h\\Volume=\pi (x-3)^2(2x+7)\\Volume=\pi (x^2-6x+9)(2x+7)\\Volume=\pi (2x(x^2-6x+9)+7(x^2-6x+9))\\Volume=\pi (2x^3-12x^2+18x+7x^2-42x+63)\\Volume=\pi (2x^3-12x^2+7x^2-42x+18x+63)\\Volume=\pi (2x^3-5x^2-24x+63)\\Volume=2\pi x^3-5\pi x^2-24\pi x+63\pi \\$

So, The Volume of cylinder is: $\mathbf{Volume=2\pi x^3-5\pi x^2-24\pi x+63\pi }$

Option B is correct option.

8 0

2 years ago