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elixir [45]
3 years ago
12

Can someone help me I will mark u brilliant

Mathematics
2 answers:
enyata [817]3 years ago
6 0

Answer:

$42.09

Step-by-step explanation:

Total cost = 3.45*12.2 = $42.09

Solnce55 [7]3 years ago
4 0

Answer:

Hello! answer: $42.09

Step-by-step explanation:

All I did was multiply the numbers together! so...

12.2 × 3.45 = 42.09 so Jenny spends 42.09 on gas HOPE THAT HELPS!

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A music club has 15 members.Each member pays monthly dues of $14.60.On the first day of the month,8 members paid their dues.The
alexdok [17]

Answer:

Step-by-step explanation:

B- 102.20 dollars was collected in dues the second day of the month. hope this helps ;)

4 0
3 years ago
Which is the inverse of the function f(x) = x2 − 4?
Rudiy27

The function is not one-to-one function, hence the inverse doesn't exist for the whole domain of the function. But if we restrict the domain to x\in(-\infty,0] or x\in[0,\infty), then we can give the inverse.

f(x)=x^2-4\\\\y=x^2-4\\\\x^2=y+4\\\\x=\sqrt{y+4} \vee x=-\sqrt{y+4}\\\\f^{-1}(x)=\sqrt{x+4}\vee f^{-1}(x)=-\sqrt{x+4}

So, when D_{f(x)}:x\in(-\infty,0], the inverse is f^{-1}(x)=-\sqrt{x+4} and when D_{f(x)}:x\in[0,\infty), the inverse is f^{-1}(x)=\sqrt{x+4}.

7 0
3 years ago
Suppose that u = < u1,u2 > and v = < v1,v2 > are vectors such that | u+v |^2 = | u |^2 + | v |^2. Prove that u and v
AveGali [126]

If u= (u1,u2,u3) andv= (v1,v2,v3), then the dot product of u and v is u·v=u1v1+u2v2+u3v3. For instance, the dot product of u=i−2j−3kandv= 2j−kisu·v= 1·0 + (−2)·2 + (−3)(−1) =−1.

Properties of the Dot Product.

Let u,v, and w be three vectors and let c be a real number. Then u·v=v·u,(u+v)·w=u·w+v·w,(cu)·v=c(u·v).

Further, u·u=|u|2.  

Thus, if u=0is the zerovector, then u·u= 0, and otherwise u·u>0.1

Orthogonality Two vectors u and v are said to be  orthogonal(perpendicular), if the angle between them is 90◦.Theorem. Two vectors u and v are orthogonal if and only if u·v= 0.

7 0
3 years ago
Solve the inequality below, then determine which number line shows the solution graphed correctly.
irga5000 [103]

Answer:

Line B

Step-by-step explanation:

2x-6<2

+6 +6

2x<8

/ /

2 2

x<4

It's Number Line B. All symbols are supposed to be less than or equal to, just don't have that symbol on my keyboard.

7 0
3 years ago
Read 2 more answers
Convert 376 centimeters into meters ??
Natalija [7]

Answer: 3.76 meters

Step-by-step explanation:

3 0
3 years ago
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