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3 years ago

Is Johhny is 91 years old and jac is 9 years old add the years togeter what is it?

Mathematics

2 answers:

leva [86]3 years ago

7 0

Answer:

100 years old

Step-by-step explanation:hope it helps:)

Rasek [7]3 years ago

6 0

First thing you must always do is read the question slowly and a carefully taking note of all the numbers:

91 = age of Johnny

9 = age of jac

What the question is asking for is what amount of years would you get if you added both Johnny and Jac’s ages together:

Johnny is 91.

Jac is 9.

91 + 9 = 100

Thus, both of their ages together add up to 100!

Hope this helps! :)

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Inessa05 [86]

Answer:

e) cannot be determined

Step-by-step explanation:

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2 years ago

Give the functions f(x) = |x + 2| - 3, what is the domain?

alexira [117]

The domain is A. All real numbers.

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3 years ago

Debi walks laps around the mall for exercise during the winter months. The table represents the number of steps recorded on her

MariettaO [177]

Answer:

The correct option will be: b. One lap around the mall is equal to about 2,425 steps.

Step-by-step explanation:

Here, we will just find the slope of the line representing Debi’s data. For that, we will take any two data from the table in form of point like $(x,y)$

Lets take two points as $(0, 1875)$ and $(2, 6725)$

Formula for finding the slope is: $m= \frac{y_{2}-y_{1}}{x_{2}-x_{1}}$ , where $(x_{1}, y_{1})$ and $(x_{2}, y_{2})$ are two given points.

Here, $x_{1}= 0 , y_{1}= 1875 , x_{2}=2 , y_{2}=6725$

So, plugging these values into the above formula, we will get......

$m= \frac{6725-1875}{2-0}=\frac{4850}{2}=2425$

That means, one lap around the mall is equal to about 2,425 steps.

5 0

3 years ago

Read 2 more answers

What is the answer for #7?

Karo-lina-s [1.5K]

Answer:

radius: 1.84 in
height: 3.68 in

Step-by-step explanation:

After you've worked a couple of "optimum cylinder" problems, you find that the cylinder with the least surface area for a given volume has a height that is equal to its diameter. So, the volume equation becomes ...

V = πr²·h = 2πr³ = 39 in³

Then the radius is ...

r = ∛(39/(2π)) in ≈ 1.83779 in ≈ 1.84 in

h = 2r = 3.67557 in ≈ 3.68 in

_____

The total surface area of a cylinder is ...

S = 2πr² + 2πrh

For a given volume, V, this becomes ...

S = 2π(r² +r·(V/(πr²))) = 2πr² +2V/r

The derivative of this with respect to r is ...

S' = 4πr -2V/r²

Setting this to zero and multiplying by r²/2 gives ...

0 = 2πr³ -V

r = ∛(V/(2π)) . . . . . . . . looks a lot like the expression above for r

If we substitute the equation for V into the equation just above this last one, we have ...

0 = 2πr³ - πr²·h

Dividing by πr² gives ...

0 = 2r - h

h = 2r . . . . . generic solution for cylinder optimization problems

3 0

3 years ago

Monique made pizzas for her party. She put meat on 1/2 of the pizzas. Only 1/4 of the meat pizzas had sausage on them. How many

Softa [21]

Answer:

C.1/8

Step-by-step explanation:

given that only 1/2 have meat

hence fraction of pizzas that have meat = 1/2

given that 1/4 of the meat pizzas have sausages

hence fraction of pizzas with sausages

= fraction of pizzas with meat x fraction of meat pizzas with sausages

= 1/2 x 1/4

= 1/8

4 0

4 years ago