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Anuta_ua [19.1K]
3 years ago
8

Help please:)need asap

Mathematics
2 answers:
JulijaS [17]3 years ago
8 0

The predicted temperature to the nearest degree fahrenheit, at 9 p.m. is 75  degree fahrenheit.

<h3>Functions and values</h3>

Given the equation that expresses the temperature, in degrees fahrenheit, in London during a day in august as;

t(x) = 9sin(0.4x - 4) + 74,

where;

x is the number of hours after midnight.

If the time is 9pm after midnight, the total number of hours will be 21 hours

Substitute x = 21 into the function to have;

t(21) = 9sin(0.4(21) - 4) + 74

t(21) = 9sin(4.4) +74
t(21) = 9(0.0767)+74

t(21) = 74.69 degree fahrenheit,

Hence  the predicted temperature to the nearest degree fahrenheit, at 9 p.m. is 75  degree fahrenheit.

Learn more on functions here: brainly.com/question/25638609

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gogolik [260]3 years ago
7 0

The predicted temperature is 75° Fahrenheit

<h3>What is trigonometric functions?</h3>

Trigonometric functions show the relationship between the sides and angles of a triangle.

Analysis:

t(x) = 9sin(0.4x - 4) + 74

since it is 9pm, which is 21 hours from 12 midnight, x = 21

t(21) = 9 sin( 0.4 x 21 - 4) + 74 = 75° Fahrenheit

In conclusion, the predicted temperature at 9pm is 75° Fahrenheit

Learn more about trigonometric functions: brainly.com/question/24349828

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Answer:

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Step-by-step explanation:

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Identify the polygon that has vertices A(−10,−1), P(−7,3), E(−3,0), and X(−6,−4), and then find the perimeter and area of the po
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Answer:

  square; perimeter 20 units; area 25 square units.

Step-by-step explanation:

As the attachment shows, each side of the polygon is the hypotenuse of a 3-4-5 right triangle, so has length 5 units. The perimeter is the sum of those lengths, 4×5 = 20; the area is the product of the lengths of adjacent sides, 5×5 = 25.

The figure is a square of side length 5 units.

The perimeter is 20 units; the area is 25 square units.

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3 years ago
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mrs_skeptik [129]
If you cut it into three pieces, it's easier to understand how to do it, as I show in the picture. when you are done splitting this into three parts you start multiplying. The side bases' digits are 31*23=713 and you need to do that twice, so 713+713=1,426. Next, you find the side-length for, and multiply, the middle base which is 23*19=437. Finally, you add all of that together 1,426+437=1,863.

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[Worth 30 Points] NEED HELP!!!
weqwewe [10]

The height of the mountain estimated by two students is 2,467.98 meters.

<h3>Height of the mountain </h3>

The height of the mountain is calculated as follows;

tanα = h/( a + b + x)

where;

  • x is the distance between end of b and h

tan37 = h/(1850 + 740 + x)

tan37 = h/(2590 + x)

h = tan37(2590 + x)

h =1,951.82 +  0.7536x  ---- (1)

tanβ = h/(b + x)

tan60 = h/(740 + x)

h = tan60(740 + x)

h = 1,281.68 + 1.732x ---- (2)

Solve (1) and (2) together

1,951.82 +  0.7536x = 1,281.68 + 1.732x

1,951.82  -  1,281.68 = 1.732x  -  0.7536x

670.14 = 0.9784x

x = 684.93 m

h = 1,281.68 + 1.732x

h = 1,281.68 + 1.732(684.93)

h = 2,467.98 m

Thus, the height of the mountain estimated by two students is 2,467.98 meters.

Learn more about angle of elevation here: brainly.com/question/88158

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5 0
2 years ago
8/1 ÷ 1/4 what's the result?
jonny [76]
The correct answer is 32
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4 years ago
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