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2 years ago

Pls help will mark brainliest, no fake answers

Mathematics

1 answer:

kotegsom [21]2 years ago

4 0

Step-by-step explanation:

b = what Bernie earns per day = Php 1000

m = what Mitch earns on a given day

e = what Eugene earns on a given day

r = what Rowan earns on a given day

t = the total earnings of Bernie and Mitch on a given day

t = m + 1000 (or m + b)

e = m/2

r = 2×(m + 1000) or 2×t

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2 more to go!!!! HELP ME!!!!!

Musya8 [376]

To divide complex numbers, you multiply by the conjugate. The conjugate is when you change the sign between the two terms in the denominator. Therefore, the conjugate in this one is (3+i)

$\frac{13-i}{3-i} * \frac{3+i}{3+i}$ ← Then, you foil these guys:

$\frac{(13-i)(3+i)}{(3-i)(3+i)} = \frac{40+10i}{10} = 4 + i$ or C

3 0

3 years ago

Which expression is equivalent to sec2x − 1?

aleksandr82 [10.1K]

Answer:

tan²x

Step-by-step explanation:

Using the Pythagorean identity

sin²x + cos²x = 1

Divide all terms by cos²x

$\frac{sin^2x}{cos^2x}$ + $\frac{cos^2x}{cos^2x}$ = $\frac{1}{cos^2x}$ , that is

tan²x + 1 = sec²x ( subtract 1 from both sides )

tan²x = sec²x - 1

7 0

3 years ago

I need help with this asap please

gtnhenbr [62]

Answer:

Step-by-step explanation:

Total amount of faces of object = 6

Surface area = length x height

2(4*10) + 2(10*17) + 2(4*17)

=2(40) + 2(170) + 2(68)

= 80 + 340 + 136

= 556cm^2

7 0

3 years ago

When given a graph, the vertical line test can be used to determine functionally. Describe the vertical line test and explain th

crimeas [40]

Answer:

The vertical line test is where you take a pencil or any vertical object and you move it across a function. If that vertical line intersects a graph more than once it would not be a function because for it to be a function it has to have one input value and one output value.

(Hopefully this helps!!)

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

The temperature at a point (x, y) is T(x, y), measured in degrees Celsius. A bug crawls so that its position after t seconds is

anastassius [24]

Answer:

The rate of change of temperature is 1.29 degree Celsius per second.

Step-by-step explanation:

We are given the following information in the question:

The temperature at a point (x, y) is T(x, y), measured in degrees Celsius where x and y are measured in centimeters.

$x = \sqrt{2+t}\\\\y = 5 + \displaystyle\frac{1}{14}t$

$T_x(4,6) = 8, T_y(4,6) = 4$

We have to find the rate at which the temperature is rising on the bug's path after 14 seconds.

At t = 14 seconds, we have,

$x = \sqrt{2+14} = 4\\\\y = 5 + \displaystyle\frac{1}{14}(14) = 5+1 = 6$

To find rate of change of temperature, we differentiate,

$\displaystyle\frac{dT}{dt} = \frac{dT}{dx}\frac{dx}{dt} + \frac{dT}{dy}\frac{dy}{dt}\\\\\displaystyle\frac{dT}{dt} = T_x(x,y)(\frac{1}{2\sqrt{2+t}}) + T_y(x,y)\frac{1}{14}\\\\At~ t = 14, x = 4, y = 6\\\\\frac{dT}{dt} = T_x(4,6)(\frac{1}{2\sqrt{2+t}}) + T_y(4,6)\frac{1}{14}\\\\\frac{dT}{dt} = 8\times \frac{1}{8} +4\times \frac{1}{14} = 1 + 0.2857 = 1.2857$

Thus, the rate of change of temperature is 1.29 degree Celsius per second.

7 0

3 years ago