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o-na [289]
3 years ago
7

Help me on problem 4 !!!!I WILL GIVE BRAINLIEST!!!!!

Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
5 0

Answer:

b=12.20

Step-by-step explanation:

its asking for a triangle. there are two legs (the straight sides) and a hypotenuse*.( the slanted one) the formula for finding a missing side is a2+b2=c2. (squared) then you plug in your numbers. and c2 is always the slanted side while a and b are the legs. Sorry this was late tho.

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Step-by-step explanation

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To find slope, find rise over run (change in y over change in x). In this case, 12/3= 4.
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4 years ago
What is K+(-5/3)=-44/3​
Natalija [7]

Answer:

\boxed{ \bold{ \huge{ \boxed{ \sf k =  - 13}}}}

Step-by-step explanation:

\sf{k + ( -  \frac{5}{3} ) =  -  \frac{44}{3} }

When there is a ( + ) in front of an expression in Parentheses, there is no need to change the sign.

That means the expression remains the same.

⇒\sf{k -  \frac{5}{3}  =  -  \frac{44}{3} }

Move 5/3 to right hand side and change it's sign

⇒\sf{k =  -  \frac{44}{3}  +  \frac{5}{3} }

While performing the addition or subtraction of like fractions , you just have to add or subtract the numerator respectively in which the denominator is retained same.

⇒\sf{k =  \frac{ - 44 + 5}{3} }

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4 years ago
(3x +1)•2x – x^2 • 3<br> (3x + 1)^2
lys-0071 [83]

Answer:

<h3>3x^2 +2x</h3><h3>9x^2 +6x+1</h3>

Step-by-step explanation:

(3x +1)\cdot 2x - x^2 \cdot 3\\\\=2x\left(3x+1\right)-3x^2\\\\\mathrm{Expand}\:2x\left(3x+1\right):\quad 6x^2+2x\\\\=6x^2+2x-x^2\cdot \:3\\\\\mathrm{Simplify}\:6x^2+2x-x^2\cdot \:3:\\\quad 3x^2+2x

2.

(3x + 1)^2\\\\\mathrm{Apply\:Perfect\:Square\:Formula}:\\\quad \left(a+b\right)^2=a^2+2ab+b^2\\\\a=3x,\:\:b=1\\\\=\left(3x\right)^2+2\cdot \:3x\cdot \:1+1^2\\\\\mathrm{Simplify}\:\left(3x\right)^2+2\cdot \:3x\cdot \:1+1^2:\\\quad 9x^2+6x+1

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4 years ago
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