3 years ago

Tanisha spends $20.90 on 9.5 quarts of strawberries for the shortcake. What is the price of each quart of strawberries?

Mathematics

1 answer:

Mice21 [21]3 years ago

6 0

Each quart of strawberries is $2.20

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Let f(x)=x2−2x−4 . What is the average rate of change for the quadratic function from x=−1 to x = 4?

goblinko [34]

Answer:

The average rate of change for f(x) from x=−1 to x = 4 is, 1

Step-by-step explanation:

Average rate A(x) of change for a function f(x) over [a, b] is given by:

$A(x) = \frac{f(b)-f(a)}{b-a}$

As per the statement:

$f(x) = x^2-2x-4$

we have to find the average rate of change from x = -1 to x = 4

At x = -1

$f(-1) = (-1)^2-2(-1)-4 = 1+2-4 = -1$

and

at x = 4

$f(4) = (4)^2-2(4)-4 = 16-8-4 = 4$

Substitute these in [1] we have;

$A(x) = \frac{f(4)-f(-1)}{4-(-1)}$

⇒ $A(x) = \frac{4-(-1)}{4+1}$

⇒ $A(x) = \frac{5}{5}$

Simplify:

A(x) = 1

Therefore, the average rate of change for f(x) from x=−1 to x = 4 is, 1

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Sound travels through sea water at a speed of about 1500 meters per second. At this rate, how far will sound travel in 2 minutes

Mariulka [41]

Answer:

180,000 m

Step-by-step explanation:

There are 60 seconds in a minute, so:

2 min × 60 s/min = 120 s

Distance = rate × time

d = 1500 m/s × 120 s

d = 180,000 m

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Why is a system’s work output limited

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Sometimes system outputs are limited because the amount of the necessary information that is perceived in the system .

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14.31782106 rounded to the nearest foot

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I believe it is 14 ..

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A bus travels with a constant speed of 48 miles per hour. How long will it take to travel 60 miles? Write your answer as a decim

agasfer [191]

Answer:

1.25 hours, I think?

Step-by-step explanation:

60 miles divides by 48 per hour.

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