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3 years ago

Joe is going for a walk. He takes 3 hours to walk 4.8 miles. What is his speed?

Mathematics

1 answer:

pashok25 [27]3 years ago

5 0

Speed = distance divided by time.

3h -> 4.8 miles

1h-> 4.8/3
= 1.6 miles

his speed is 1.6 miles per hour.

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Question 19 of 25<br> f(x)=√x-6. Find the inverse of f(x) and its domain.

Gekata [30.6K]

Answer:

f¯¹(x)=x²+12x+36

Step-by-step explanation:

$f(x) = \sqrt{x} - 6 \\ substitute \: y \: for \: f {}^{ - 1} (x) \\ y = \sqrt{x} - 6 \\ interchange \: x \: and \: y \\ x = \sqrt{y} - 6 \\ swap \: the \: side \: of \: the \: equation \\ \sqrt{y } - 6 = x \\ move \: the \: constant \: to \: the \: right \: hand \: side \\ \sqrt{y} = x + 6 \\ square \: both \: sides \: of \: the \: equation \\ y = x {}^{2} + 12x + 36 \\ substitute \: f \frac{}{ -1} (x) \: for \: y \\ f {}^{ - 1} (x) = x {}^{2} + 12x + 36 \\ domain \: x∈R$

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2 years ago

How many eggs are needed to make 1 dozen waffles, assuming you have enough of all other ingredients? given: 2 cups flour + 3 egg

malfutka [58]

We have been given that

2 cups flour + 3 eggs + 1 tbs oil → 4 waffles

In order to make 4 waffles we need 3 eggs.

Thus, to make 1 waffle we need 3/4 eggs.

Now, in 1 dozen there are 12 waffles. Hence, to make 12 waffles we need

$\frac{3}{4} \times 12\\
\\
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=9$

Therefore, 9 eggs are needed to make 1 dozen waffles.

D is the correct option.

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4 years ago

Solve for x. 2x + 16 = 3(x - 9) A) -43 B) -25 C) 0 D) 43

sergiy2304 [10]

Answer:

x = 43

Step-by-step explanation:

2x + 16 = 3(x - 9)

2x + 16 = 3x - 27

2x - 16 = 3x -27 (-16)

2x = 3x -43

2x (-3x) = -43

-1x or -x

-x = -43

-43/ -x = 43

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3 years ago

If 52, 34p is divisible by 9, the digit represented by P must be

Karo-lina-s [1.5K]

Answer:

C)4

Step-by-step explanation:

If the number is divisible by 9 the sum of its digit must be divisible by 9.

52,34p

Solution:

5+2+3+4+p=14+p

If we add 14 to 4

14+4=18

p=4

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4 years ago

Read 2 more answers

How do you solve for x?

Tasya [4]

But it is not a complete question.

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3 years ago