2 years ago

Number Sense A bike helmet has a

Mathematics

2 answers:

Zarrin [17]2 years ago

6 0

Answer: The estimate is greater than the actual mass.

labwork [276]2 years ago

6 0

Answer: Elena is right, that is about 300 grams so her estimate is equal to the actual mass

Step-by-step explanation:

You might be interested in

Can someone answer this math question please???

Lapatulllka [165]

Answer:

TOO MUCH!!!

Step-by-step explanation:

8 0

3 years ago

g For the curve parameterized by x(t) = 3 sin t, y(t) = 5 cost, for −π/4 ≤ t ≤ π/2: (a) Sketch the curve and the direction trace

tamaranim1 [39]

Answer:

a) See the file below, b) $s = \int\limits^{0.5\pi}_{-0.25\pi} {[\left( 3\cdot \cos t\right)^{2}+\left(-5\cdot \sin t \right)^{2}]} \, dx$ , c) $s \approx 9.715$

Step-by-step explanation:

a) Points moves clockwise as t increases. See the curve in the file attached below. The parametric equations describe an ellipse.

b) The arc length formula is:

$s = \int\limits^{0.5\pi}_{-0.25\pi} {[\left( 3\cdot \cos t\right)^{2}+\left(-5\cdot \sin t \right)^{2}]} \, dx$

c) The perimeter of that arc is approximately:

$s \approx (\frac{1}{4} + \frac{1}{8})\cdot 2 \pi\cdot \sqrt{\frac{3^{2}+5^{2}}{2} }$

$s \approx 9.715$

5 0

3 years ago

Julia bought name tags for a party. Each name tag is 3 3/4 in. wide and 2 1/3 in. high.

kogti [31]

View explanations and answer in the picture

5 0

3 years ago

Read 2 more answers

What is a verbal expression for w - 24

Alenkasestr [34]

A number minus twenty four

6 0

3 years ago

Which expression is equivalent to -2.8x-6.3

wariber [46]

Answer:

-0.7(4x+9)

Step-by-step explanation:

-2.8x-6.3=-0.7(4x+9)

4 0

3 years ago