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Brut [27]
3 years ago
9

Len needs to run at least 3 miles a day to get ready for a cross-country race. One lap of the school track is 400 yards. If len

runs
10 laps a day will he cover at least 3 miles? Explain
Mathematics
1 answer:
SSSSS [86.1K]3 years ago
5 0
No because 4 laps around the track is one mile so if he did then he would have only done two and a half miles
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If f, g, h
ale4655 [162]

Answer:

F(x) = 3x^2 + 1, G(x) = 2x - 3, H(x) = x

F(3) = 3(3)^2 + 1 = 27 + 1 = 28

G(4) = 2(4) - 3 = 8 - 3 = 5

2H(5) = 2(5) = 10

F(3) + G(4) - 2H(5) = 28 + 5 - 10

F(3) + G(4) - 2H(5) = 23

Step-by-step explanation:

I believe I'm not sure tho

6 0
3 years ago
A soccer league has 200 players. Of those players 50% are boys. How many boys are in the soccer league
Lelechka [254]
What's 200 minus 50 that's your answer simple
7 0
3 years ago
Calculate the average rate of change for the given function, from x = 2 to x = 7.
Marina86 [1]
\bf slope = m = \cfrac{rise}{run} \implies 
\cfrac{ f(x_2) - f(x_1)}{ x_2 - x_1}\impliedby 
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\begin{array}{ccll}
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x_1=2\\
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5 0
3 years ago
Arectangularplotoflandistobefencedinusingtwokinds of fencing. Two opposite sides will use heavy-duty fencing selling for $3 a fo
svlad2 [7]

Answer:

Dimensions of the rectangular plot will be 500 ft by 750 ft.

Step-by-step explanation:

Let the length of the rectangular plot = x ft.

and the width of the plot = y ft.

Cost to fence the length at the cost $3.00 per feet = 3x

Cost to fence the width of the cost $2.00 per feet = 2y

Total cost to fence all sides of rectangular plot = 2(3x + 2y)

2(3x + 2y) = 6,000

3x + 2y = 3,000 ----------(1)

3x + 2y = 3000

      2y = 3000 - 3x

      y = \frac{1}{2}[3000-3x]

      y = 1500 - \frac{3x}{2}

Now area of the rectangle A = xy square feet

A = x[1500-\frac{3x}{2}]

For maximum area \frac{dA}{dx}=0

A' = \frac{d}{dx}(1500x-\frac{3}{2}x^{2}) = 0

1500 - 3x = 0

3x = 1500

x = 500 ft

From equation (1),

y = 1500 - \frac{3}{2}\times 500

y = 1500 - 750

y = 750 ft

Therefore, for the maximum area of the rectangular plot will be 500 ft × 750 ft.

two fencing 3(500+500) = $3000

other two fencing 2(750+750) = $3000

8 0
3 years ago
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olya-2409 [2.1K]

\huge\bf\red{answer}

<h2>The expression is not factorable with rational numbers.</h2>
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2 years ago
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