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Evgesh-ka [11]
3 years ago
14

[25 POINTS] hi um please send help within like, 20 mins bc I'm gonna cry hahahaha

Mathematics
2 answers:
Rus_ich [418]3 years ago
8 0
I will cry with you
Lana71 [14]3 years ago
6 0

Answer:

c = 3

c = -3

(There are two because absolute value :P)

Step-by-step explanation:

u = 7i + 24j

u = (7, 24)

||c * u|| = 75

75 = || c \sqrt{7^{2}+24^{2} } ||

75 = || c \sqrt{625} ||

75 = || c * 25 ||

3 or -3 = c

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What is the value of -3(15-s)+2s^2 when s=-3<br>PLEASE ANSWER QUICKLY!!!!!
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Answer:

-36

Step-by-step explanation:

1. Plug -3 into the equation given: -3(15-(-3)+2(-3)^2

2. Use Pemdas and first distribute the negative to negative three then distribute -3 to the rest of the parenthesis (final answer): -45-9 +2(-3)^2

3. Then put -3 to the power of 2 (which is 9) then multiply it by 2 (final answer): -45-9+18

4. Combine all like terms and you get the answer -36!

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Ikr like I’m failing lol
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A landscaper has enough cement to make a patio with an area of 150 Sq ft. The homeowner wants the length of the patio to be 6 ft
Natasha_Volkova [10]
A=lw=150\\l=w+6\\(w+6)w=150\\w^2+6w=150\\w^2+6w-150=0\\w=\frac{-b+-\sqrt{b^2-4ac}}{2a}\\w=\frac{-(6)+-\sqrt{(6)^2-4(1)(-150)}}{2(1)}\\w=\frac{-6+-\sqrt{36+600}}{2}\\w=\frac{-6+-\sqrt{636}}{2}\\w=\frac{-6+-2\sqrt{159}}{2}\\w=-3+-\sqrt{159}>0\\w=-3+\sqrt{159}\\\\l=(-3+\sqrt{159})+6\\l=3+\sqrt{159}

Width = -3 + sqrt(159)
Length = 3 + sqrt(159)
4 0
3 years ago
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