3 years ago

Please help me with this question!!

Mathematics

1 answer:

Anon25 [30]3 years ago

7 0

Answer: Umm I think 59

Step-by-step explanation:

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Suppose you are given two angles A and B in which angle a is equal to angle b. If the measure of a compliment of angle a is equa

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5x + 20 = 90 - a = 90 - (3x + 40)
5x + 20 = 90 - 3x - 40 = 50 - 3x
5x + 3x = 50 - 20
8x = 30
x = 30/8 = 15/4

b = 3(15/4) + 40 = 45/4 + 40 = 51.25
The measure of a supplementary angle is 180 - 51.25 = 128.75

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3 years ago

Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature is 80 degrees at midnig

Vladimir [108]

Answer:

The equation is given by:

$D(t) = 80 + 9\sin{0.2618t}$

Step-by-step explanation:

Sine function:

Has the following format:

$y = A\sin{bx}$

In which A is the amplitude and $\frac{2\pi}{b}$ is the period.

Suppose you know the temperature is 80 degrees at midnight and the high and low temperature during the day are 89 and 71 degrees

This means that the amplitude of the sinusoidal variation function is 89 - 80 = 80 - 71 = 9. This means that $A = 9$

During a 24-hour day, which means that the period is 24. So

$\frac{2\pi}{b} = 24$

$24b = 2\pi$

$b = \frac{2\pi}{24}$

$b = 0.2618$

So the variation is:

$V(t) = 9\sin{0.2618t}$

Assuming t is the number of hours since midnight, find an equation for the temperature, D, in terms of t.

Initial temperature of 80, so:

$D(t) = 80 + V(t) = 80 + 9\sin{0.2618t}$

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3 years ago

Veronica's mom left 3/4 of a cake on the table. Her brothers ate 1/2 of it. What fraction of the cake did they eat?

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Answer: 3/8

Step-by-step explanation: Multiply 3/4 and 1/2, or $\frac{3}{4} *\frac{1}{2} \\$ , which equals 3/8

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Solve the system of equations using substitution. y = 2x – 10 y = 4x – 8

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If this paper dosent help u solve it on Your own i can walk u through it

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You start driving north for 9 miles, turn right, and drive east for another 40 miles. At the end of driving, what is your straig

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Answer:

Step-by-step explanation:

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