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3 years ago

9

Suppose the function ℎ() represents the height of a ball, in meters, t seconds after being thrown. Which expression represents t

he change in the height between 1 and 3 seconds?
Group of answer choices

ℎ(3)−ℎ(1)

ℎ(3)

ℎ(1)

12(ℎ(1)−ℎ(3))

1 answer:

Tasya [4]3 years ago

7 0

The first option is the answer pls mark as brainless

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If the problem is 6r•s•4rt•10rst, then the answer is 240•r^3•s^2•t^2.

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An unopened cereal box contains 15/28 cubic foot of cereal. If the box is full, and the length and height of the box are5/7 and

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Volume is height times length times width

V = 15/28 ft^3
h = 11/2 ft
l = 5/7
w = ?

So the unsolved equation is:
V = h × l × w

Separate the w by diving both sides by h and l:
$w = \frac{v}{hl}$
Then plug in the numbers:
$w = \frac{( \frac{15}{28}) }{( \frac{11}{2} ) \times ( \frac{5}{7}) }$
Which, with the fractions flipped, equals:
$w = ( \frac{15}{28} ) \times ( \frac{2}{11} ) \times ( \frac{7}{5} ) \\ w = \frac{210}{1540}$
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The width of the box is 3/22 ft

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3 years ago

Mr. Whitman gave a test to his 32 math students. He felt the results were low, so he retested them one week later. The results o

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The number of student more passed the retake, when the students need a 65 in order to pass the test is 8.

<h3>What is box and whiskers plot?</h3>

Box plot is the way of representation of data which gives the graphical image of the data set to understand better. In this the data is represented with the help of quartile.

A.The difference in the median grade-

The median of first test is 60 while the second test is 80. Thus, the difference is,

$d=80-60\\d=20$

B. Compare the percent of students who got at least a 60 on the original test to those that got at least a 60 on the retake.

The student, who got at least 60 in first test, falls in the second half of the plot. Thus, the 50% of students got atleast 60% marks. In the retake test, all 100% student got at least 60 on test.

C. If the students need a 65 in order to pass the test, how many more passed the retake?

In the first test 1/4 are passed while in second test 3/4 students are passed and got the marks 65 or more than this, Thus the number of student pass more in this test,

$n=(\dfrac{3}{4}-\dfrac{1}{2})\times 32\\n=8$

Thus, the number of student more passed the retake, when the students need a 65 in order to pass the test is 8.

Learn more about the box and whiskers plot here;

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3 years ago

The tanker continues to leak 720 gal/h after the first 8 hours. If the tanker originally contained 25,000 gal of oil, approximat

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Answer:

It will take approximately 5 hours for all the oil to leak.

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Let us assume that the rate follows an arithmetic progression such that at every 8 hours, 5760 gallons of oil.

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When the volume becomes 0, that would be the final volume of the the tank when all the oil is leaked.

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Tn = a+(n-1)d

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d = -5760

Tn = 0

a = 25000

0 = 25000 + (n-1) -5760

0 = 25000 -5760n + 5760

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Approximately 5 hours

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4 years ago

Whats the exact value of tan (300°)

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Answer:

$Tan(300^{\circ})= - \sqrt{3}$

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Using 1

So, $Tan(360^{\circ}-60^{\circ})= - Tan60^{\circ}$

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