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3 years ago

Susan is riding her bicycle. She rides 25.6 kilometers in 2 hours. What is her speed?

Mathematics

1 answer:

Zepler [3.9K]3 years ago

3 0

I would probably say about 51,200 miles
Hope that helps!

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Helena wants to paint a box in the shape of a cube with sides that are 18 inches long. what is the surface area that Helena will

yan [13]

Answer:

1944 Inches Squared

Step-by-step explanation:

Surface area Formula for a Cube:

$A = 6a^2$

The "edge", which is also the side, is 18 inches.

$a = 18$

Solve the formula.

$A= 6a^2 = 6(18)^2 = 6 * 18^2\\18^2 = 324\\324 * 6 = 1944\\A=1944$

The cube's surface area should be 1944 square inches.

5 0

2 years ago

Write as a percent. (if necessary, round to the nearest tenth of a percent.)13/30

labwork [276]

The correct answers is 43.33%

6 0

2 years ago

(28 points) In the drawing, a regular polygon is partially covered by a rectangle. what is the number of sides of this polygon?

alexira [117]

Answer:

c:8

Step-by-step explanation:

✔

3 0

2 years ago

Read 2 more answers

Simplify to a single power of 2: 2^4/ 2^3

Natali [406]

Step-by-step explanation:

This leads to another rule for exponents—the Power Rule for Exponents. To simplify a power of a power, you multiply the exponents, keeping the base the same. For example, (23)5 = 215. For any positive number x and integers a and b: (xa)b= xa· b.

Answer:

2^1

3 0

2 years ago

Ross needs to have a procedure done, and since he is over 65 he is on Medicare. Medicare says that according to their plan the a

Anni [7]

Answer:

$\large \boxed{\$1200.00}$

Step-by-step explanation:

Let the office charge = x

Amount paid by Medicare = ⅞x

Amount paid by Ross = ¼(⅞x) = $262.50

Solve for x

$\begin{array}{rcrl}\dfrac{1}{4} \left(\dfrac{7}{8}x \right ) & = & \$262.50 & \\\dfrac{7}{32}x & = & \$262.50 & \text{Multiplied the fractions}\\\\7x & = & \$8400.00 & \text{Multiplied each side by 32}\\x & = & \mathbf{\$1200.00} & \text{Divided each side by 7}\\\end{array}\\\text{The office wanted to charge } \large \boxed{\mathbf{\$1200.00}}$

Check:

$\begin{array}{rcl}\dfrac{1}{4} \left(\dfrac{7}{8}\times \$1200.00 \right ) & = & \$262.50\\\\\dfrac{1}{4} \left(\$1050.00 \right ) & = & \$262.50\\\\\$262.50 & = & \$262.50\\\end{array}$

OK.

7 0

2 years ago