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masha68 [24]
3 years ago
5

An object is thrown from a platform. Its height (in meters), x seconds after launch, is modeled by h (x) = -5 (x + 1) (x -9)

Mathematics
1 answer:
777dan777 [17]3 years ago
8 0

Answer:

Step-by-step explanation:

This is already factored for us, which is really nice, so now all we need to do is apply the Zero Product Property to the sets of parenthesis and solve for x, which will give us the 2 times that the object is on the ground.

x + 1 = 0 so

x = -1

x - 9 = 0 so

x = 9

We all know that time cannot ever be negative, so the time that the object is on the ground is 9 seconds after it's launched (which was from an initial height of 45 meters).

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What is the total cost of a $150.00 necklace if the sales tax is 6.5%
LiRa [457]
The best thing to do is to find what 1% is, and you can do this by dividing 150 by 100.
150/100= 1.5
As you're looking for 6.5%, you've got to multiply 1.5 by 6.5
1.5*6.5= 9.75
You've then got to add 9.75 and 150 together
150+9.75= $159.75
Therefore, after the sales tax, the cost of the necklace is $159.75 
Hope this helps :) 
4 0
3 years ago
(3/1/2 - 9/3/4) / (-2.5)=
Alex73 [517]
<h3>Answer :</h3>

\:  \:  \:

=  \rm \large  \frac{3 \frac{1}{2}  - 9 \frac{3}{4} }{ - 2.5}

\:  \:

= \rm \large  \frac{ \frac{7}{2}  - 9 \frac{3}{4} }{ - 2.5}

\:  \:

=  \rm \large \:  \frac{ \frac{7}{2} -  \frac{39}{4}  }{ - 2.5}

\:  \:

=  \rm \large \:  \frac{ \frac{25}{4} }{ - 2.5}

\:  \:  \:

=  \rm \large \:  \frac{5}{2}

\:  \:  \:

6 0
2 years ago
Eliza and Jamie are making cupcakes for a bake sale at school. Eliza needs 2 1/3 cups of flour for her recipe, and Jamie needs 1
mylen [45]

Answer:

yes, they do have enough flour for both recipes

Step-by-step explanation:

they have a total of 4 cups of flour, one needs 2 1/3 cups and the other person needs 1 3/4 cups.

4- 2 1/3= 1 1/3

1 1/3- 1 1/3= 0

this means they have the perfect amount of flour for both recipes.

3 0
2 years ago
One more than 5 times a number is less than or equal to 10. Find all such numbers.
NemiM [27]
Let the number be x
Form the equation : 5x + 1 ≤ 10
5x ≤ 10-1
5x ≤ 9
X ≤ 9/5
so X can be 9/5 or any values smaller than that.

hope this helps :)
7 0
3 years ago
Read 2 more answers
A salesman who makes $32,500 a year gets promoted to sales manager, earning a new salary of $43,250. What was the rate of increa
OLEGan [10]

Answer:

33.1%

Step-by-step explanation:

First, calculate the dollar amount of the increase.  Subtract $32,500 from $43,250.  We get $10,750.

Next, divide this $10,750 by the original salary, $32,500, to determine what fraction of $32,500 is represented by $10,750:

fraction = $10,750/$32.500 = 0.331

Convert this to a percentage by multiplication by 100%:  33.1%

The rate of increase of the saleperson's salary was 33.1%.

8 0
2 years ago
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