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3 years ago

Help please! Thank you!

Mathematics

1 answer:

juin [17]3 years ago

8 0

Answer:

Step-by-step explanation:

h(x) = 36 - 4.9x^3

Let x be 1.3

The question is not entirely clear. Looks like the iphone moved. Not only that, but the question is not really clear either. I'm taking it to mean that h is the distance from the GROUND to the ROCK after 1.3 seconds.

h(x) = 36 - 4.9(1.3)^2

h(1.3) = 36 - 4.9 * 1.3 * 1.3

h(1.3) = 36 - 27.719

h(1.3) = 8.28 m

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Angelo bought apples and bananas at the fruit stand. He bought 20 pieces of fruits and spent $11.50. Apples cost $0.50 and banan

Cerrena [4.2K]

<h2>Steps</h2>

So for this system, one equation will represent the number of fruit and the other equation will represent the combined total of the fruit. (Let x = apples and y = bananas):

$x+y=20\\0.5x+0.75y=11.50$

Next, I will be using the substitution method to remove one of the variables. To do this, firstly subtract both sides by y in the first equation:

$x=20-y\\0.5x+0.75y=11.50$

Next, since we know that x is equal to 20 - y, substitute it into the second equation and solve for y:

$0.5(20-y)+0.75y=11.50\\10-0.5y+0.75y=11.50\\10+0.25y=11.50\\0.25y=1.50\\y=6$

Now that we have the value of y, substitute it into either equation to solve for x:

$x+6=20\\x=14\\\\0.5x+0.75(6)=11.50\\0.5x+4.5=11.50\\0.5x=7\\x=14$

<h2>Answer</h2>

<u>In short, Angelo bough 14 apples and 6 bananas.</u>

8 0

4 years ago

Which has a greater volume; two regular cans of soup, each with a diameter of 8 cm and a height of 10 cm or one family size can

Sophie [7]

Answer:

The two regular cans of soup has a greater volume than the family size can of soup

Step-by-step explanation:

step 1

Find the volume of two regular cans of soup, each with a diameter of 8 cm and a height of 10 cm

The volume is equal to

$V=2[\pi r^{2} h]$

we have

$r=8/2=4\ cm$ ----> the radius is half the diameter

$h=10\ cm$

substitute

$V=2[\pi (4)^{2} (10)]$

$V=320\pi\ cm^{3}$

step 2

Find the volume of one family can of soup, with a diameter of 10 cm and a height of 12 cm

The volume is equal to

$V=\pi r^{2} h$

we have

$r=10/2=5\ cm$ ----> the radius is half the diameter

$h=12\ cm$

substitute

$V=\pi (5)^{2} (12)$

$V=300\pi\ cm^{3}$

therefore

Compare the volumes

$320\pi\ cm^{3} > 300\pi\ cm^{3}$

The two regular cans of soup has a greater volume than the family size can of soup

5 0

3 years ago

carol is excited to get a new kitten from the animal shelter. the kitten had an $299 adoption fee. carol had $50 off coupon for

Molodets [167]

Answer:

1 month

Step-by-step explanation:

249 is the amount she spends for buying the kitten, (299-50=249) which she only has to pay once.

20 is the amount she has to spend every month, the rate of change.

The problem can be modeled with the general equation:

y = 20x + 249

In this equation, x the the time in months and y is the amount of money spent.

Substitute 250 for y.

y = 20x + 249

250 = 20x + 249 <= isolate x to get the number of months

1 = 20x

x = 1/20

Carol will only spent money every month, not for 1/20 of a month.

It will only take Carol 1 month to spent $250.

Check answer:

Substitute x for 1

y = 20x + 249

y = 20(1) + 249

y = 269

269 is more than 250 already.

3 0

3 years ago

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hichkok12 [17]

Answer:

43 in^2

Step-by-step explanation:

6 0

3 years ago

Bryan's puppy has been gaining weight for the last year. The graph shows data about the puppy's weight over time.

drek231 [11]

I would say 25 pounds because the graph displays a proportional relationship( a straight line) so the next point in the line would be 25 pounds.
I hope this helped! :-)

3 0

3 years ago

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