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2 years ago

Hamburger: $6.00 Fries: $2.00 Tax: 7% Tip: 20% Total: ___

Mathematics

1 answer:

Salsk061 [2.6K]2 years ago

3 0

Answer:

$10.27

Step-by-step explanation:

H + F = $8, (7% of 8 is 0.56) [$8.56] + 20% = 10.272 --> $10.27

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6x-y=8<br> 7x-y=9<br> Solve linear systems by Multiplying first

Sindrei [870]

The answer is (1,-2). Here’s the work

4 0

2 years ago

If S is a compact subset of R and T is a closed subset of S, then T is compact. Prove this using the definition of compactness.

wlad13 [49]

Answer:

It has been proved that T is compact

Step-by-step explanation:

To prove this using the definition of compactness, let's assume that T is

not compact. Now, if that be the case, an open cover of T will exist. Let's call this open cover "A". Now, this open cover will have no finite subcover.

Now, from the question, since T is closed, it’s complement R\T will be open.

Therefore, if we add the set R\T to the collection of sets A, then we'll have an open cover of R and also of S.

Due to the fact that S is compact, this

cover will have a finite sub - cover which we will call B.

Finally, either B itself or B\{R\T} would be a finite sub - cover of A. This is a contradiction.

Thus, it proves that T has to be compact if S is to be a compact subset of R and T is to be a closed subset of S.

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2 years ago

The line plots show the results of the number of dollars two different age groups of teenagers

kicyunya [14]

Answer:

Step-by-step explanation:

100.9

8 0

2 years ago

I really need help :)

iren2701 [21]

Answer:

Could anyone help me with this problem please?

What is one value that makes the fraction (x^2 + 11x +30)/(4x + 44x^2 + 120x) Undefined?

Need real help I'm so stressed out

Step-by-step explanation:

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2 years ago

A forestal station receives the locations of two fires, one of them in a forest located 11 Km heading N69°W from the station. Th

loris [4]

Answer:

30.7 km

Step-by-step explanation:

The distance between the two fires can be found using the Law of Cosines. For ΔABC in which sides 'a' and 'b' are given, along with angle C, the third side is ...

c = √(a² +b² -2ab·cos(C))

The angle measured between the two fires is ...

180° -(69° -35°) = 146°

and the distance is ...

c = √(11² +21² -2(11)(21)cos(146°)) ≈ √945.015

c ≈ 30.74

The straight-line distance between the two fires is about 30.7 km.

8 0

2 years ago