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Yuki888 [10]
3 years ago
6

Simplify Ratios 63 to 21

Mathematics
2 answers:
mixer [17]3 years ago
8 0
The answer is 63:21 is 3:1
tatiyna3 years ago
3 0

63:21=3:1

Hope this helps.

r3t40

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The results of a car race are shown. How much faster did Evans drive per lap than loza?
Lelechka [254]
Evans finishes 42 laps in 96,6 mins and Loza finished 38 laps in 102,6 mins

Evans. 96,6÷42= 2,30 mins
Loza . 102,6÷38= 2,70 mins

2,70 mins - 2,30 mins
= 40 secs and Evan is faster with 40secs in each lap.
8 0
3 years ago
What does 14x - 200y = when x = 12 and y = 3.2?
myrzilka [38]
14(12)-200(3.2)
168-640= -472
5 0
3 years ago
Read 2 more answers
5.Sophia got 68 points correct on her math test, which earned her an 85%. Her friend Tami
Blababa [14]

Answer:

A 80 points, B 89%

Step-by-step explanation:

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2 years ago
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For each statement, write what would be assumed and what would be proven in a proof by contrapositive of the statement. Then wri
Anna007 [38]

Answer:

a)

Given Statement - If x and y are a pair of consecutive integers, then x and y have opposite parity.

Proof by Contrapositive:

Assumed statement: Suppose that integers x and y do not have opposite parity.

Proven Statement: x and y are not a pair of consecutive integers.

Proof -

x = 2u₁ , y = 2u₂

Then

(x, x+1) = (2u₁ , 2u₁ + 1) = (Even, odd)

If y = 2u₁ + 1

Not possible

⇒x and y are not a pair of consecutive integers.

Hence proved.

Proof by Contradiction:

Assumed statement: Suppose x and y are not a pair of consecutive integers.

Proven Statement: Suppose x and y do not have opposite parity.

Proof -

If x and y are not a pair of consecutive integers.

⇒ either x and y are odd or even

If x and y are odd

⇒x and y have same parity

Contradiction

If x and y are even

⇒x and y have same parity

Contradiction

(b)

Proof by Contrapositive:

Assumed statement: Let n be an integer such that n is not odd (i.e. n is an even integer)

Proven Statement: n² is not odd (i.e n² is even)

Proof -

Let n is even

⇒n = 2m

⇒n² = (2m)² = 4m²

⇒n² is even

Hence proved.

Proof by Contradiction:

Assumed statement: Let n be an integer such that n² be odd.

Proven Statement:  suppose that n is not odd (i.e n is even)

Proof -

Let n² is odd

⇒n² is even

⇒n² = 2m

⇒2 | n²

⇒2 | n

⇒n = 2x

⇒ n is even

Contradiction

8 0
3 years ago
Tom Lynd is paid $290.00 a week. His employer deducts 7.65% for social security taxes and $54.10 for withholding taxes and pensi
Ulleksa [173]
Answer = $213.72
\frac{7.65}{100}  \times 290 = 22.185
290 - 22.185 - 54.10 = 213.715
Net pay = $213.72 (Rounded off to 2 decimal points)
8 0
3 years ago
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