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Pavel [41]
2 years ago
6

Pls help what is sideBC

Mathematics
1 answer:
ikadub [295]2 years ago
3 0

Answer:

Cosx=a/h

Cos70=y/5

5*cos70=1.71 =bc

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Why do some quadratic graphs move left or right and others do not? Is there a correlation between this and them moving up and do
Vikentia [17]

Answer:

(x + 3)^2 is left 3 because it becames 0 at -3

(x - 3)^2 is right 3  because it becames 0 at 3

x^2 +3 is up 3  because your just adding 3 units up

x^2 - 3 is down 3 because your just subtracting 3 units down

Step-by-step explanation:

8 0
2 years ago
What's substitution for:<br> X=y-7<br> X+8y=2
MrRissso [65]
\left \{ {{x=y-7} \atop {x+8y=2}} \right. \\\\&#10;substitute\ x=y-7\ into \ the\ second\ equation\\\\&#10;y-7+8y=2\\\\&#10;9y-7=2\ \ \ | add\ 7\\\\&#10;9y=9\ \ \ | divide\ by\ 9\\\\&#10;y=1\\\\x=y-7=1-7=-6
4 0
3 years ago
(2w-5)(w+7) so far I got 2w^2 + 9w + ?
FromTheMoon [43]

Answer:

=2w2+9w−35

Step-by-step explanation:

(2w+−5)(w+7)

(2w)(w)+(2w)(7)+(−5)(w)+(−5)(7)

2w2+14w−5w−35

2w2+9w−35

7 0
2 years ago
20 points!!! first answer gets brainliast. Don't need too much explanation thank you!​
KengaRu [80]

Answer:

The answer to your question is below

Step-by-step explanation:

2. \sqrt{-128}                Just find the prime factors of 128 and simplify

   \sqrt{-2^{7}} = \sqrt{-2^{6} 2} = 2^{3}i \sqrt{2}

   8i\sqrt{2}

3.- \sqrt{-9} + \sqrt{-16}     Get the square roots and simplify

     3i + 4i

     7i

4.- None of the choices is equal to one, because the exponents are pair.

5.- 1/3x² + 10 = 7

    1/3x² = 7 - 10

    1/3x² = -3

         x² = -3(3)

         x² = -9

         x = ±3i

8 0
3 years ago
PLEASE HELP Which ordered pair is a solution to the system of inequalities?<br> y&lt; 3x<br> y&lt; 5
dimaraw [331]

Answer:

I am pretty sure that it is  C

Step-by-step explanation:

A 1,3 so 3 < 3 no not true

   x,y

B -12,50   50< -36 Also not true

    x  ,  y

C  9  ,  4   4<27 Yes    4< 5 YEPPP

D 4,10   10<12 Yes          10<5 NOOPPPPPEEEE

5 0
2 years ago
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