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Lemur [1.5K]
3 years ago
12

Set up an algebraic equation and then solve the following problems. The height of an object dropped from the top of a 64-foot bu

ilding is given by h(t)=-16t^2+64. How long will it take the object to hit the ground?
Mathematics
1 answer:
ycow [4]3 years ago
7 0
0=-16t^2 +64

0=-16(t^2 - 4)

0=-16(t-2)(t+2)

t=2 or - 2

It will take two seconds for the object to hit the ground.
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To solve this problem, all you need to do is subtract 6.108-3.106
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10+z=x what is the answer
Basile [38]

First you had subtract by ten from both sides of equation form.

10+z-10=x-10

Then simplify by equation.

z=x-10

Final answer: \boxed{z=x-10}

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HELP ME PLS I NEED TO ACE THIS TEST!
vladimir2022 [97]
The rate of change is -$45, and it represents the amount of money withdrawn each month.

We can find the rate of change by finding the change in y/change in x:

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5 0
2 years ago
Caroline was thinking of a number. Caroline adds 7 to it, then doubles it and gets an answer of 82.8. What was the original numb
Soloha48 [4]

Answer:

n = 34.4

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

Step-by-step explanation:

<u>Step 1: Set Up</u>

Let's let our number be set by variable <em>n</em>.

We add 7 to it: n + 7

We then double that entire expression: 2(n + 7)

That expression is equal to 82.8: 2(n + 7) = 82.8

<u>Step 2: Solve for </u><em><u>n</u></em>

  1. [Division Property of Equality] Divide 2 on both sides:                               n + 7 = 41.4
  2. [Subtraction Property of Equality] Subtract 7 on both sides:                      n = 34.4

∴ Caroline's original number is 34.4.

5 0
3 years ago
A pharmacist needs to combine a mixture for a patient. She uses 5 mg of antibiotic for 25 mg of the mixture. If the patient need
Kitty [74]

Answer:

20 mg

Step-by-step explanation:

5/25 mg

multiply 25 by 4 to get 100 so also multiply 5 by 4 to get 20 mg of the antibiotic.

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3 years ago
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