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3 years ago

-3(3x+8)>-9x+4 always or never true?

Mathematics

1 answer:

labwork [276]3 years ago

6 0

-3(3x+8)>-9x+4
-9+8>-9x+4
+9x +9x
8>4

Answer:Always

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Which shape best describes the object generated when the rectangle is rotated about the axis?

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Answer:

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denpristay [2]

Answer:

y = (-6/13)x + (4/13).,

Step-by-step explanation:

the equation of the line is:

y = mx + b, where "m" is the slope and "b" gives the y-intercept

m = (y2 - y1)/(x2 - x1)

m = (-2 - 4)/(5 - (-8))

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y = (-6/13)x + b

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b = 4 - (-6/13)(-8)

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the equation of the line that passes through the points (-8,4) and (5,-2) is:

y = (-6/13)x + (4/13).

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3 years ago

A certain compound has a half-life of four days. Write and use an exponential decay function to find the amount of compound rema

dimaraw [331]

Answer:

1.97 ounces

Step-by-step explanation:

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$P_t=P_oe^{-rt}\\\\$

Given that the half-life is 4 days, we can substitute in the formula to solve the rate of decay for a single half-life:

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#Since, 1 week has 7 days, 3 weeks is a 21-day period, thus, t=21.

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Sam runs for 10 minutes The graph shows his puse, in beats per minute. 100- (beats per min) 80- 1 2 3 5 6 7 8 9 10 Time (min) By

Inessa05 [86]

The rate at which his pulse is increasing after 3 minutes is 9.5 beats per minute

<h3>How to determine the beat rate after 3 minutes?</h3>

The given graph shows the curve and the tangent.

From tangent line, we have the following points:

(x,y) = (3,119) and (1,100)

The beat rate (m) at this point is:

$m = \frac{y_2 -y_1}{x_2 -x_1}$

So, we have:

$m = \frac{100 - 119}{1 - 3}$

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Evaluate the quotient

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Hence, the rate at which Sam's pulse is increasing after 3 minutes is 9.5 beats per minute

Read more about rates of tangent lines at:

brainly.com/question/6617153

#SPJ1

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blagie [28]

Since 1 cm = 10 mm
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