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3 years ago

HELP ME FIND THE ANGLE HELP ME FIND ANGLE A

Mathematics

1 answer:

romanna [79]3 years ago

4 0

Answer:

32 degrees

Step-by-step explanation: So they tell you BE is congruent to BC so triangle BCE is isosceles. We know that angle C is 35 degrees and the triangle is isosceles so angle E is 35 degrees too. Now we do 180-(35+35) and that equals 110 so angle B is 110. And we know that angle EBC and FBA are supplementary angles so 180-110 is 70 degrees so angle FBA is 70 degrees and you can do the same thing with angle DFB and AFB so 180-102 degrees is 78 degrees and to find angle a you just do 180-(70+78) and that equals 32 degrees so angle A is 32 degrees. :)

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A sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's p

charle [14.2K]

Answer:

So the value of the test statistic is -0.85.

Step-by-step explanation:

We know that a sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 54% of the chips do not fail in the first 1000 hours of their use.

We get that:

$n=1800\\\\p_1=53\%=0.53\\\\p_2=54\%=0.54\\$

We calculate the standar deviation:

$\sigma=\sqrt{\frac{0.53 \cdot (1-0.53)}{n}}=\sqrt{\frac{0.53 \cdot 0.47}{1800}}=0.01176$

We calculate the value of the test statistic:

$z=\frac{p_1-p_2}{\sigma}=\frac{0.53-0.54}{0.01176}=-0.85$

So the value of the test statistic is -0.85.

5 0

3 years ago

The equation 6x - 5y = 14 is written in standard form. Which point lies on

dimaraw [331]

Answer= H (-1, -4)

Explanation= 6(-1) - 5(-4) = 14
(-6) + (20) = 14
14=14 * it works !
GOODLUCK!

4 0

2 years ago

Can you help me in write the perimeter of the triangle in a simplest form

Angelina_Jolie [31]

I got 6x+3

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2x+3x+x/1x=6x

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2 years ago

Cheyanne plans to put $150 into a savings account. She can place her money into an account represented by f(x) = 5x+150, or into

stepan [7]

In order to calculate the amount, we simply substitute the number of years into x in both equations.
After 3 years:
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f(10) = 5(10) + 150
= $200
g(10) = 150 * 1.03⁽¹⁰⁾
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3 years ago

Please show work<br> 26 lbs of onion cost $127.40. How much would 18 lbs cost\

Irina18 [472]

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5 0

2 years ago