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4 years ago

How do I find x?? It’s in french by the way.

Mathematics

2 answers:

DENIUS [597]4 years ago

5 0

Answer:

The answer is 108

Step-by-step explanation:

The angle is obtuse and the only obtuse answer is 108.

leva [86]4 years ago

5 0

Answer:

IDK but i got the translation. Also, you have the other answer choices blocked off

Step-by-step explanation:

the polygon in the center of the figure is a regular pentagon

what is the value of x

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How can we check the binomial factors to verify that they are truly factors? Are the factors (x + 5)(x – 8) truly factors of x2

gladu [14]

They are not. The easiest way to tell this is by multiplying the last number of each parenthesis together. This should always result in the last number in the equation. However, -8*5 does not equal -30, so these are not the true factors.

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3 years ago

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I will gove you 100 points

MrMuchimi

To find side given angle and two sides:

a² = b² + c² − 2bc cos(A)

Here given:

a = AC cm

b = 10 cm

c = 7 cm

angle A = 120°

Solve for AC (a):

a² = (10)² + (7)² − 2(10)(7) cos(120)

a² = 219

a = √219

a = 14.7986 cm

a = 14.8 cm

4 0

2 years ago

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Find a solution to y'(t) = te^-t satisfying the condition y(1) = 1.

Alex_Xolod [135]

Answer:

$y=-e^{-t}(t+1)+1+\frac{2}{e}$

Step-by-step explanation:

The given differential equation is

$y'(t)=te^{-t}$

It can be written as

$\frac{dy}{dt}=te^{-t}$

$dy=te^{-t}dt$

Integrate both sides.

$\int dy=\int te^{-t}dt$

Apply ILATE rule on right side. Here, t is first function and $e^{-t}$ is the second function.

$y=t\int e^{-t}-\int (\frac{d}{dt}t\int e^{-t})$

$y=-te^{-t}-\int (1\times (-e^{-t}))$ $\int e^{-x}=-e^{-x}+C$

$y=-te^{-t}+\int e^{-t}$

$y=-te^{-t}-e^{-t}+C$ .... (1)

Initial condition is y(1) = 1. It means at t=1 the value of y is 1.

$1=-(1)e^{-t}-e^{-(1)}+C$

$1=-e^{-1}-e^{-1}+C$

$1=-2e^{-1}+C$

$1=-\frac{2}{e}+C$

Add $\frac{2}{e}$ on both sides.

$1+\frac{2}{e}=C$

Substitute the value of C in equation (1).

$y=-te^{-t}-e^{-t}+1+\frac{2}{e}$

$y=-e^{-t}(t+1)+1+\frac{2}{e}$

Therefore, the solution of given initial value problem is $y=-e^{-t}(t+1)+1+\frac{2}{e}$ .

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3 years ago

What is the area of the smallest square?

Minchanka [31]

Answer: 36 $in^{2}$

Step-by-step explanation: I took the test and the person that answered 6 is wrong because it's not even on the test :T

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3 years ago

Can someone help me please find the perimeter

beks73 [17]

Answer:

8x + 9

Step-by-step explanation:

Perimeter is the sum of all sides:

2x + x+8 + 5x+1 = 8x + 9

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3 years ago

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