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natali 33 [55]
2 years ago
7

If u= <4,5> and v= <0,-1>, find 2v+5u

Mathematics
2 answers:
tia_tia [17]2 years ago
7 0

Answer:

<20,23>

Step-by-step explanation:

2v = 2<0,-1> = <0,-2>

5u = 5<4,5> = <20,25>

2v + 5u = <0,-2> + <20,25>

= <20,23>

GaryK [48]2 years ago
4 0

Answer:

<20,23>

Step-by-step explanation:

u= <4,5> and v= <0,-1>

2v = 2*<0,-1> = <0,-2>

5u = 5* <4,5> = <20,25>

2v+5u = <0,-2> + <20,25>

            = <20,23>

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The product of three consecutive numbers is 21,924. What is the smallest number out these numbers?
Natasha_Volkova [10]

Answer:

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Step-by-step explanation:

Let the middle number be x.

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You can solve that equation, or you can use logic.

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2 years ago
If y varies directly as x , and y = 6 when x = 15, find y when x = 25 <br> .k = ______y = ______
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6 0
3 years ago
Read 2 more answers
In ΔJKL, l = 860 inches, j = 920 inches and ∠K=126°. Find ∠L, to the nearest degree.
fomenos

Answer:

26

Step-by-step explanation:

JKL= ABC,  jkl=abc

1.) use law of sines to find k.

c^{2} =a^{2} +b^{2} -2abCosC    

c=\sqrt{920^{2} +860^{2} -2(920)(860)cos(126) } = 1586.225515

2.) use law of cosines to find L

\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}  

plug in for b and c:  \frac{860}{sinB} =\frac{1586.225515}{sin126}

cross multiply: \frac{1586.23sinB}{1586.23} =\frac{860sin126}{1586.23}

sinB= 0.4386227612\\B=sin^-1(0.4386227612)= 26.01604086\\

L=26

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3 years ago
What goes in to 35 and 100?
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