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stiks02 [169]
3 years ago
8

PLEASE HELP!! iTS ALGEBRA

Mathematics
1 answer:
Lunna [17]3 years ago
7 0

Answer: The closest time is 0.954 seconds

Step-by-step explanation:

The height of the Frisbee from the ground is given by

s(t) = -16t^2 +12t + 15

t is the time in seconds. If we input a value for t, we would get the distance of the Frisbee above the ground in feets at that given time.

We want to determine the time at which the Frisbee would be 10 feets above the ground. The equation becomes

10 = -16t^2 +12t + 15

-16t^2 +12t + 15 - 10 = 0

-16t^2 +12t + 5 = 0

We will solve for x using the general formula for quadratic equations

x = [-b+-√b^2 - 4ac]/2a

a = -16

b = 12

c = 5

x = [-12+-√12^2 -( 4 × -16 × 5)]/2 × 5

x = [-12+-√144 + 320]/10

x = [-12+-√464]/10

x =[ -12+21.54]/10 or x =[ -12- 21.54]/10

x = 9.54/10 or x = -33.54/10

x = 0.954 or x = -3.354

Since t is greater than or equal to 0 as stated, the time will be

0.954 seconds

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Bernie had $30 in his bank account. Today, he withdrew d dollars but tomorrow he will
IgorC [24]

Answer:

Step-by-step explanation:

Bernie had $30 in his bank account.

Today he withdrew $d

Now he has = $30 — $d

Because from $30 he took away $d that’s why $d have to subtract from the $30.

Tomorrow he’ll deposit $15 and that will be added up with current balance $30 —$d.

So, the expression to represent how much money Bernie will have in his bank account is $30 —$d + 15

5 0
3 years ago
Write a compound inequality that represents the following scenario:
Inessa05 [86]

The compound inequality that represents the two following scenarios are:

  1. 65 < f ≤ 4
  2. 8 ≤ f ≤ 12

A compound inequality usually puts together two or more simple inequalities statements together.

Following the assumption from the given information that;

  • a free single scoop cone = f

<h3>1.</h3>

The age group of individuals designated to receive the free single scoop cones is:

  • people who are older than 65 i.e. > 65
  • children that are 4 or under 4 i.e. ≤ 4

Thus, the compound inequality that is appropriate to express both conditions is:

  • 65 < f ≤ 4

<h3>2.</h3>
  • On Tuesdays, the least amount of flavors = 8
  • The addition amount of extra flavors they can add = 4

Now, we can infer that the total amount of flavors = 8 + 4 = 12

Thus,  the compound inequality that is appropriate to express both conditions is:

  • Least amount of flavors ≤ f ≤ total amount of flavors  
  • 8 ≤ f ≤ 12

Therefore, we can conclude that the compound inequality that represents the two following scenarios are:

  1. 65 < f ≤ 4
  2. 8 ≤ f ≤ 12

Learn more about compound inequality here:

brainly.com/question/24540195?referrer=searchResults

6 0
2 years ago
What is 2x+y=4 and 2x+y=-1
butalik [34]

Answer:

{x,y} = {5,6}

Step-by-step explanation:

// Solve equation [1] for the variable  x

 [1]    x = y - 1

// Plug this in for variable  x  in equation [2]

  [2]    2•(y -1) - y = 4

  [2]    y = 6

// Solve equation [2] for the variable  y

  [2]    y = 6

// By now we know this much :

   x = y-1

   y = 6

// Use the  y  value to solve for  x

   x = (6)-1 = 5

5 0
3 years ago
Read 2 more answers
Please help urgent 7th grade math question?! begging?
ch4aika [34]

Answer:

no. B 40x+30y=60 l think

3 0
3 years ago
Can someone please help me?
bulgar [2K]

Solution:

<u>Given:</u>

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<u>Solve the equation by isolating the variable.</u>

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The value of b is 9.

Hoped this helped!

6 0
2 years ago
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