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jekas [21]
2 years ago
7

Jenny and Lester are running the 100 meter dash. Jenny completes it in 15.2 seconds and Lester completed it in 15.7 seconds. Wha

t were their speeds and who won the race?
Mathematics
1 answer:
matrenka [14]2 years ago
3 0

Jenny won the race as she finished the race much more quickly and has greater average speed than Lester.

\sf \boxed{\sf speed:\frac{distance}{time \ taken} }

Jenny: distance/time = 100/15.2 = 6.58 m/s = 6.6 m/s

Lester: distance/time = 100/15.7 = 6.37 m/s = 6.4 m/s

You might be interested in
A person filing her federal income tax return with the Single filing status had a taxable income of $79,950. According to the ta
Tom [10]

Answer:

The income that she will have left over after paying his

federal income tax = $63,775.

Step-by-step explanation:

  • The amount of taxable income = $79,950
  • So, the taxable income will be in the range from $33,950 to $82,250.
  • It means, there will be $4675 fixed tax and additional 25% tax on the amount over $33,950.

As

The amount over $33,950 = $79,950 - $33,950 = $46,000

So

The additional tax = 46000 × 0.25 = $11,500     ∵25% = 0.25

So, the total federal income tax will be: $11500 + $4675 = $16,175

Therefore, the income that she will have left over after paying his federal income tax = $79,950 - $16,175 = $63,775.

Keywords: income, income tax

Learn income tax from brainly.com/question/11446109

#learnwithBrainly

4 0
3 years ago
Which of these countries has the greatest population density? Which has the least? Provide an explanation and proof for your ans
zhenek [66]

Answer:

greatest - romania; least - us; proof below

Step-by-step explanation:

to answer this question we must first find all the population densities by dividing the population by the area

for the us

272648000/9364520 = 29.115

for romania

22609000/237391 = 95.2394994

for ghana

18339000/237533 = 77.2061145

this means that the us has the lowest population density

this also means that romania has the highest population density

3 0
2 years ago
A=36 a=8 b=5 find C.
Inessa [10]
Could you please elaborate on this equation

8 0
3 years ago
Read 2 more answers
I need help on this question please
Gala2k [10]

You can't add the letter so ?

6 0
3 years ago
Rewrite in vertex form. F(x)=2x^2-20x+8
nexus9112 [7]

The <em>vertex</em> form of the <em>quadratic</em> equation, written in <em>standard</em> form, f(x) = 2 · x² - 20 · x + 8 is f(x) + 75 = 2 · (x - 5)².

<h3>What is the vertex form of a quadratic equation?</h3>

In this problem we have a <em>quadratic</em> equation in <em>standard</em> form, whose form is defined by f(x) = a · x² + b · x + c, where a, b, c are <em>real</em> coefficients, and we need to transform it into <em>vertex</em> form, defined as:

f(x) - k = C · (x - h)²       (1)

Where:

  • (h, k) - Vertex coordinates
  • C - Vertex constant

This latter form can be found by algebraic handling. If we know that f(x) = 2 · x² - 20 · x + 8, then its vertex form is:

f(x) = 2 · x² - 20 · x + 8

f(x) = 2 · (x² - 10 · x + 4)

f(x) + 2 · 25 = 2 · (x² - 10 · x + 25)

f(x) + 75 = 2 · (x - 5)²

The <em>vertex</em> form of the <em>quadratic</em> equation, written in <em>standard</em> form, f(x) = 2 · x² - 20 · x + 8 is f(x) + 75 = 2 · (x - 5)².

To learn more on quadratic equations: brainly.com/question/1863222

#SPJ1

6 0
1 year ago
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