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shtirl [24]
3 years ago
15

Due today help meeeeeee

Mathematics
1 answer:
sineoko [7]3 years ago
5 0

Answer:

√(209)

Step-by-step explanation:

Since <B is a right angle, AC is the hypotenuse and AB and BC are legs.

(AB)² + (BC)² = (AC)²

(4 mm)² + (BC)² = (15 mm)²

16 mm² + (BC)² = 225 mm²

(BC)² = 209 mm²

BC = √(209) mm

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Hi Means What 62+789​
masha68 [24]

Answer:

Hello \:  means \:  851.

5 0
3 years ago
Read 2 more answers
Please help me I need these right away. Will give BRAINLIEST.
olga nikolaevna [1]

Answer:

Guy's Graphix = y=7.5x+30

Patty's Printing = y = 5.5x+50

Step-by-step explanation:

6 0
4 years ago
Triangle sum theorem <br> WILL MARK BRAINLIEST
sergiy2304 [10]

Answer:

So for a hint to help you...when you are looking at a triangle on a 180 degree line, each angle adds up to 180 degrees. So for example, on #9 on the top of the triangle, one of the angles is 49 degrees so you want to subtract that from 180 ( 180 - 49 = X ) ( X = angle 1 and 2 ) so angle 1 and 2 added together equals X. In this case, ( X = 131 degrees ) Every triangle equals 180 degrees too. So since this angle has 3 different angles on the line, you can do the rest of the problems and come back to these because you can subtract angle 4 and 73 to get angle 2.

(still on #9) Angle 3, as you can see only has one other number beside it (73) so it makes this one very easy. ( 180 - 73 = X ) ( X = 107 )  <u>Angle 3 = 107 degrees</u>

<u></u>

Angle 5. Subtract the 49 above angle 5 from 180 and the result will be angle 5. ( 180 - 49 = X ) ( X = Angle 5 ) <u>X/angle 5 = 131.</u>

Now you can get angle 4, which gives you angle 2 and 1. ( 180 - 131 = Angle 4 ) <u>(Angle 4 = 49)</u>

Angle 2. In the triangle, we have 73 degrees, and 49 degrees. So the equation for this one is, ( 180 - 73 - 49 = Angle 2 ) ( Angle 2 = 58 )

Angle 1. On this line, we have 49 degrees and 2=58 degrees. ( 180 - 58 - 49 = Angle 1 ) <u>( Angle 1 = 73 )</u>

<u></u>

Lastly, Angle 3. The side of this triangle will also equal 180, just like the top line. Angle 1 = 73 degrees so as you now know, subtract that from 180 and get angle 3. ( 180 - 73 = Angle 3 ) <u>(Angle 3 = 107 )</u>

<u></u>

1: 73  degrees

2: 58 degrees

3: 107 degrees

4: 49 degrees

5: 131 degrees

I know this is a lot to read, but I really hope I explained it to where you can understand it now.

8 0
3 years ago
A sample of 255 observations is selected from a normal population with a population standard deviation of 27. The sample mean is
sladkih [1.3K]

Answer:

1.691

Step-by-step explanation:

Standard error of the mean is expressed as SEM = S/√n

S is the population standard deviation

n is the sample size (number of observation)

Given S = 27 and n = 255

SEM = 27/√255

SEM = 27/15.97

SEM = 1.691

Hence the standard error of the mean is 1.691

3 0
4 years ago
​​someone pls help meeeee!!!!!!<br>​​
GuDViN [60]

Step-by-step explanation:

y = y

x - 2 = 2x - 3 - 3x²

3x² + x - 2x = - 3 + 2

3x² - x = - 1

.

a = 3, b = -1, c = 0

.

\sf{x = \frac{-b \pm \sqrt{b^{2} - 4ac} }{2a} }

\sf{x = \frac{- (-1) \pm \sqrt{-1^{2} - 4 (0)} }{2(3)} }

\sf{x = \frac{ 1 \pm \sqrt{1 - 0} }{6} }

\sf{x = \frac{ 1 \pm \sqrt{1} }{6} }

\sf{x = \frac{ 1 + 1 }{6} }

\sf{x = \frac{ 2 }{6} }

\sf{x = \frac{ 1 }{3} }

.

Substitution :

y = x - 2

y = ⅓ - 2

y = ⅓ - 6/3

y = - 5/3

y = - 1 ⅔

.

5 0
3 years ago
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