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3 years ago

George rode the 27 miles to town in 2 hours. He reduced his speed by 10 miles per hour on the

Mathematics

1 answer:

MrMuchimi3 years ago

7 0

Answer:

<h2>B. 7.71 hours</h2>

Step-by-step explanation:

If he rode 27 miles in 2 hours then that means he rode 13.5 miles in 1 hour because 13.5 is half of 27. This also means that he was moving at 13.5 mph. He reduced his speed on the return trip by 10 mph so, 13.5 - 10 = 3.5. Now that we know he was going 3.5 mph on the return, we can multiply 3.5 by 7.71 to get 27 since that's how far the ride was. 3.5 x 7.71 = 26.985. It's not exactly 27 but it's a lot closer than the rest.

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Solving equations with variables on both sides <br><br><br> 7+9x=6x-2

katrin2010 [14]

Answer:

Here

Step-by-step explanation:

We move all terms to the left:

7+9x-(6x-2)=0

We get rid of parentheses

9x-6x+2+7=0

We add all the numbers together, and all the variables

3x+9=0

We move all terms containing x to the left, all other terms to the right

3x=-9

x=-9/3

x=-3

3 0

3 years ago

Read 2 more answers

A spinner used in a board game is divided into 12 equally sized sectors. Seven of these sectors indicate that the player should

xeze [42]

Answer:

20.8 inches squared

Step-by-step explanation:

Area of spinner:

45.1 is the area of sectors where the token doesn't move, which 5 sectors doesn't move the token (don't forget that the bonus points doesn't move token). Then

45.1/5=9.02

9.02*12=108.24

K=1/2(r^2)sin150

108.24=1/2(r^2)sin150

216.48=(r^2)1/2

432.96=r^2

r=20.8

7 0

4 years ago

You are determining the mass of an object using a triple beam balance. When the pointer is lined up with the zero mark, the ride

Molodets [167]

328 grams is the mass.

3 0

3 years ago

What is the area of a circle. Using 3.14 for. A circle with diameter of 8.4 ft.

ira [324]

Hey there! I'm happy to help!

First, let's find the radius. The radius is half of the diameter.

8.4/2=4.2

Here's how to find the area of a circle.

Square the radius.

4.2²=17.64

And multiply by pi (3.14 in our case)

17.64(3.14)=55.3896

We round to the nearest tenth, giving us an area of 55.4 ft²

Have a wonderful day! :D

5 0

3 years ago

Which products result in a difference of squares or a perfect square trinomial? check all that apply. (5x 3)(5x – 3) (7x 4)(7x 4

Scilla [17]

(7x + 4)(7x + 4) and (x – 9)(x – 9) are Perfect square trinomial. (5x + 3)(5x – 3) and (–3x – 6)(–3x + 6) shows the Difference of squares.

<h3>What is a perfect square?</h3>

A perfect square is a number system that can be expressed as the

square of a given number from the same system.

The following are the answers

(5x + 3)(5x – 3) Difference of squares

(7x + 4)(7x + 4) is a Perfect square trinomial

(2x + 1)(x + 2) has Neither a difference of squares nor a perfect square trinomial.

(4x – 6)(x + 8) has Neither a difference of squares nor a perfect square trinomial.

(x – 9)(x – 9) is Perfect square trinomial

(–3x – 6)(–3x + 6) = $(-3x)^2- ( -6)^2$ Difference of squares.

Learn more about perfect square:

brainly.com/question/1415730

8 0

3 years ago