2 years ago

Johnny canoed 15 3/4 miles in s 1/4 hours. What was his average rate of speed in miles per hour?

Mathematics

1 answer:

Bess [88]2 years ago

5 0

There are four 1/4’s per hour

Multiply the miles by 4:

15 3/4 x 4 = 63 miles per hour

You might be interested in

Hello! I was trying to Do 69x24 but it is sadly not giving helpful tips so I was wondering if you can help me step by step?

Bad White [126]

The answer is 1,656 .

6 0

2 years ago

What is the standard form of this complex number? (24-10i)-(43+18i)

Yuki888 [10]

Answer:

-19-28i

Step-by-step explanation:

Simplify and write the answer in standard form, a+bi.

6 0

2 years ago

Get all of them and get brainliest

Marina86 [1]

1. 21,150
2. 2.5193
3. 27.98
4. 11,100

8 0

2 years ago

A pyramid has a base area of 124 in² and a height of 25.2 in. What is the volume of the pyramid?

xeze [42]

Answer:

1041.6

Step-by-step explanation:

The volume of a pyramid is V=b x h x 1/3 . b is the area of the base and h is the height. V=124 x 25.2 x 1/3 This can simplify to V=3124.8 x 1/3 . You could also just divide by 3. You will get 1041.6

8 0

2 years ago

2x2 - 4x –9 = 0<br> Completing the swuare

ASHA 777 [7]

Step-by-step explanation:

$(a-b)^2=a^2-2ab+b^2\\\\2x^2-4x-9=0\qquad|\text{add 9 to both sides}\\\\2x^2-4x-9+9=0+9\\\\2x^2-4x=9\qquad|\text{divide both sides by 2}\\\\\dfrac{2x^2}{2}-\dfrac{4x}{2}=\dfrac{9}{2}\\\\x^2-2x=4.5\\\\x^2-2\cdot x\cdot1=4.5\qquad|\text{add}\ 1^2\ \text{to both sides}\\\\x^2-2\cdot x\cdot1+1^2=4.5+1^2\\\\(x-1)^2=5.5\iff x-1=\pm\sqrt{5.5}\qquad|\text{add 1 to both sides}\\\\x=1-\sqrt{5.5}\ \vee\ x=1+\sqrt{5.5}$

4 0

3 years ago