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3 years ago

PLZZzzzzz Help me ASAP!!!

Mathematics

2 answers:

ziro4ka [17]3 years ago

8 0

Answer:

The estimate is 217.5.

andreyandreev [35.5K]3 years ago

3 0

Answer:

The barometric height at sea level is 76 cm of mercury while that a point on a highland is 74 cm of mercury. Determine the altitude of the mercury.(Take g as 10 N/kg, the density of mercury 13600 kg/3m and density of air is 1.25 kg/m3)

THe answer is 217.5m

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liberstina [14]

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Which is the best approximation for the measure of angle ABC?

qwelly [4]

Answer:

58.3°

Step-by-step explanation:

Missing Information:

In this question the diagram is missing Following are the attachment of diagram of the given question.

As we seen that the vertex c is making the right angle i,e 90° also there is an acute angle the Hypotenuse: 20 cm and the perpendicular is 10.5 cm

Now we have find the best approximation of the angle ABC used the cosx trigonometric function.

$cos\ x\ =\ \frac{perpendicular}{Hypotenuse} \\$

Putting the value of perpendicular and hypotenuse in the previous formula we get

$cos\ x\ =\ \frac{10.5\ cm}{20\ cm} \\$

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3 years ago

Given the function f(x)=-8x2+8x+9,state whether the vertex represents a maximum or minimum point for the function.

Lelechka [254]

8x2+8x+9
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=24x+9
Are that right

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3 years ago

F(x) = -2x2 + 7<br> Find f(-5)

Ainat [17]

Answer:

f(-5) = -43

Step-by-step explanation:

Step 1: Define

f(x) = -2x² + 7

f(-5) is x = -5

Step 2: Substitute and Evaluate

f(-5) = -2(-5)² + 7

f(-5) = -2(25) + 7

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4 years ago

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4 years ago

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