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Anarel [89]
2 years ago
7

If a ! 0 and 5/x = (5+a) / (x+a) what is the value of x ?

Mathematics
1 answer:
gulaghasi [49]2 years ago
3 0

Answer: 5

Step-by-step explanation:

\frac{5}{x}=\frac{5+a}{x+a}\\\\5x+5a=5x+xa\\\\5a=xa\\\\x=5

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The N71-90 virus will give an infected person a mild rash on their arms once the person has 1 billion of the virus cells in thei
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Answer:

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Step-by-step explanation:

<u>Given function:</u>

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<u>It can be rewritten as:</u>

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<u>If number of divisions is 8, then:</u>

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Correct choice is B

4 0
3 years ago
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Use the graph of f(x) below to estimate the value of f '(3):
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Well, looking at the graph, notice, its vertex is at 0,9, and it passes through the points -3,0 and 3,0, so hmm let's use 3,0, to get the equation of f(x)

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\bf vertex~(0,9)~&#10;\begin{cases}&#10;h=0\\&#10;k=9&#10;\end{cases}\implies y=a(x-0)^2+9&#10;\\\\\\&#10;\textit{we also know that }&#10;\begin{cases}&#10;x=3\\&#10;y=0&#10;\end{cases}\implies 0=a(3-0)^2+9&#10;\\\\\\&#10;-9=9a\implies \cfrac{-9}{9}=a\implies -1=a\quad thus\quad \boxed{y=-x^2+9}&#10;\\\\\\&#10;\left. \cfrac{dy}{dx}=-2x \right|_{x=3}\implies -6
3 0
3 years ago
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PLS HELP ME I E BRAINLIEST!!
valentinak56 [21]

Answer:

Step-by-step explanation:

i dnot know

4 0
3 years ago
(Giving Branliest)
bekas [8.4K]

Hey there! I'm happy to help!

28(5280)=147840 feet per hour.

There are 60 minutes in an hour. To find out how many feet Bolt runs in a second we divide by 60.

147840/60=2464

And we divide by sixty again to get to seconds.

2464/60=41 1/15 feet per second.

Have a wonderful day! :D

8 0
3 years ago
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3(a - 4) ≤ 33<br> Help me solve
yaroslaw [1]

Answer:

a ≤ 15

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

Step-by-step explanation:

<u>Step 1: Define</u>

3(a - 4) ≤ 33

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

  1. Divide 3 on both sides:                    a - 4 ≤ 11
  2. Add 4 on both sides:                        a ≤ 15

Here we see that any value <em>a </em>less than or equal to 15 would work as a solution to the inequality.

3 0
3 years ago
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