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Kitty [74]
3 years ago
7

-4f - 9 f + 15

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

Answer:

13f+15

Step-by-step explanation:

- plus - equals addition so you add 4 and 9 then the two - will equal to a + so there will be no sign there 15 cant be added to 13F because it doesnt have the same letter (f)   (i said it in the simplest way possible hope u get a c or b ^^)  

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HELP PLSS
atroni [7]

The balloon reaches a height of 7 feet at 0.1 seconds and 2.13 seconds

<h3>How to determine the time the balloon is at the height?</h3>

The equation of the function is given as

h(t)= -16t^2 + 35t + 5

The above equation is a quadratic equation

When the balloon is at a height of 7 feet, we have

h(t) = 7

So, we have the following equations

h(t)= -16t^2 + 35t + 5

h(t) = 7

Next, we plot the equations on a graph (see attachment)

The equations intersect at

t = 0.059 and t = 2.129

Approximate

t = 0.1 and 2.13

Hence, the times are 0.1 seconds and 2.13 seconds

Read more about quadratic equation at

brainly.com/question/15709421

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8 0
1 year ago
Help please me!!!!!!!!!!!
AlexFokin [52]
D:  We solve this in exactly the same way in which we solved the previous area problem.  Side length is s, area is s^2.  Here, side length is 5 in; area is 25 in^2.
the problem does say, however, not to include units in your answer.  Thus, just write "25."
5 0
2 years ago
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How long can I talk on the phone if they charge 8 cent a minute and I have 90 cents
NeTakaya
U can talk only for 11 minutes and have 2cents left
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3 years ago
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What is the sum of 15 – 6i and –2 + 9i? 13 + 3i 17 + 3i 24 – 147i 24 + 147i
Delicious77 [7]

13 + 3i

15 - 6i - 2 + 9i  → Sum

collect like terms

(15 - 2) + ( - 6i + 9i) =13 + 3i


7 0
3 years ago
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2x^2+5x factor please
fredd [130]
<span>2x^2+5x factor please</span>

=

x(2x+5)

try Mathway .com
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3 years ago
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