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Tems11 [23]
2 years ago
10

What is the answer??

Mathematics
1 answer:
KonstantinChe [14]2 years ago
8 0

Answer:

x=12.2

<LMN=49.6

<SML=40.4

Step-by-step explanation:

3x+13+7x-45=90

3x+7x+13-45=90

10x-32=90

10x=122

x=12.2

3(12.2) + 13

36.6+13

49.6

7(12.2) -45

85.4-45

40.4

49.6+40.4=90

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Answer:

36%

Step-by-step explanation:

change÷original amount x100

480÷100= 4.8 = 1%

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3 years ago
Simplify and Evaluate
zalisa [80]
\dfrac{2^{-1} + 5^{-1}}{10^{-1} - 5^{-2}} =

= \dfrac{\frac{1}{2} + \frac{1}{5}}{\frac{1}{10} - \frac{1}{5^2}}

=\dfrac{\frac{1}{2} + \frac{1}{5}}{\frac{1}{10} - \frac{1}{25}}

=\dfrac{\frac{5}{10} + \frac{2}{10}}{\frac{5}{50} - \frac{2}{50}}

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= \frac{7}{1} \times \frac{5}{3}

= \frac{35}{3}


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3 years ago
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The function f(t)=-16 + 100 models the height of a ball, in feet, dropped from a 100-foot rooftop at time t, in seconds.
Mazyrski [523]

Using it's concept, it is found that the average rate of change of the function during the interval from 0 to 2 seconds is given by:

B. -32 ft/s; the average change in altitude of the ball each second over that interval.

<h3>What is the average rate of change of a function?</h3>

The average rate of change of a function is given by the change in the output divided by the change in the input. Hence, over an interval [a,b], the rate is given as follows:

r = \frac{f(b) - f(a)}{b - a}

In this problem, the function is given by:

f(t) = -16t² + 100.

The outputs are given as follows:

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Hence the average rate of change is given by:

r = (36 - 100)/(2 - 0) = -32 ft/s.

And the correct option is:

B. -32 ft/s; the average change in altitude of the ball each second over that interval.

More can be learned about the average rate of change of a function at brainly.com/question/24313700

#SPJ1

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