4 years ago

Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 45? Select three options.

Mathematics

1 answer:

vekshin14 years ago

7 0

Health Sciences or Teacher Prep?

Answers are B, C & E.

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If x - 7 = 10, then x = 17. This statement demonstrates:

harkovskaia [24]

C. the addition property of equality

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3 years ago

Read 2 more answers

What is the value of the arithmetic series below?

xxTIMURxx [149]

Answer:

(A)-494

Step-by-step explanation:

Given the arithmetic series

$S_{19}=\sum_{k=1}^{19}4-3k$

The terms in the sequence are:

When k=1, 4-3k=4-3(1)=1
When k=2, 4-3k=4-3(2)=-2
When k=3, 4-3k=4-3(3)=-5

Therefore, the terms in the sequence are: 1, -2, -5, ...

First term, a =1

Common difference, d=-2-1=-3

The sum of an arithmetic series, $S_n=\dfrac{n}{2}[2a+(n-1)d]$

Therefore:

$S_{19}=\dfrac{19}{2}[2(1)+(19-1)(-3)]\\=9.5[2+18*-3]\\=9.5[2-54]\\=9.5*-52\\=-494$

The correct option is A.

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3 years ago

A ball is thrown into the air with a speed of 32 feet per second. The function h=32t - 16t^2 models the height of the ball after

beks73 [17]

Answer:

t = 1 s

Step-by-step explanation:

The function models the height of the ball after t seconds is given by :

$h=32t - 16t^2$

We need to find how many seconds does it take for the ball to reach its maximum height.

For maximum height put dh/dt = 0

$\dfrac{dh}{dt}=\dfrac{d}{dt}(32t - 16t^2)\\=32-32t$

So,

32-32t = 0

t = 1

So, it will take 1 second to reach its maximum height.

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3 years ago

Consider the polynomial function ( x + 3 ) ( x + 9 ) ( x - 6 ) = 0 Which of the following are zeros of the function? Select all

Marat540 [252]

Zeros= -3, -9, and 6
x+3=0 x=-3, x+9=0 x=-9, x-6=0 x=6

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3 years ago

What is the absolute value of -62/3

Firlakuza [10]

Answer:

Step-by-step explanation:

The absolute value is 62/3

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3 years ago