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tensa zangetsu [6.8K]
3 years ago
8

True or false: if |x| =3 then x = 3

Mathematics
1 answer:
My name is Ann [436]3 years ago
7 0

False because that is absolute value so x can be -3 or 3. So the answer is false.

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Ise9urgyobrhrstbydfdsfwefwefsdfewfds
ELEN [110]
Yeah I think x=12y on this one correct me if I’m wrong
3 0
3 years ago
A pumpkin is launched from the top of a 20 foot tall platform at an initial velocity of 84 feet per second. The height, h, of th
Gennadij [26K]
<h2>Explanation:</h2>

In this problem we have a pumpkin is launched from the top of a 20 foot tall platform at an initial velocity of 84 feet per second. So the height, h, of the pumpkin at time t seconds after the launch can be modeled by the equation:

h(t) = -16t^2 + 84t + 20

So this is the equation of a parabola. The maximum of this parabola occurs at its vertex. So let's find this vertex:

\text{The x-value of the vertex is}: \\ \\ t=-\frac{b}{2a} \\ \\ \\ Where: \\ \\ a=-16 \\ \\ b=84 \\ \\ c=20 \\ \\ \\ t=-\frac{84}{2(-16)} \\ \\ t=-\frac{84}{-32} \\ \\ t=\frac{21}{8}=2.625 \\ \\ h(2.625)=-16(2.625)^2+84(2.625)+20 \\ \\ h(2.625)=-110.25+220.5+20 \\ \\ h(2.625)=130.25m

Finally, the maximum occurs at time 2.625 seconds when the height is 130.25m

8 0
3 years ago
The area of a triangle is 24 square inches. What is the height of the triangle if the base length is 4 inches?
snow_tiger [21]
A = b*h*0.5
24 = 4*0.5*h
24 = 2*h
h = 12

Height is 12 inches.
7 0
3 years ago
Read 2 more answers
In simplified exponential notation, the expression x^3•x^-4•x=
alexandr1967 [171]
Since all of the bases (x) are equal you just add the exponents.

(The x has an exponent of 1)

3 + -4 + 1

-1 + 1

0

Since the answer is 0 it is x^0

And any number or variable set to the power of 0 equals 1, therefore...

ANSWER: x^3 • x^-4 • x = 1

Hope this helps!
6 0
4 years ago
The data in the table represents the average number of daylight hours each month in Springfield in 2015, rounded to the nearest
Lera25 [3.4K]
To do part B, use the equation that you wrote for part A.  We need to figure out what month number March of 2020 will be; we started in January 2015 at month 1; month 2 was Feb. 2015; month 3 was Mar. 2015; etc. to month 12 at Dec. 2015.  Then month 13 will be Jan. 2016; month 13+12=25 will be Jan. 2017; month 25+12=37 will be Jan. 2018; month 37+12=49 will be Jan. 2019; month 49+12=61 will be Jan. 2020; month 62 will be Feb. 2020; and month 63 will be March 2020.  

63 is the number you will substitute for x in the equation you've already written for part A.
8 0
3 years ago
Read 2 more answers
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