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3 years ago

In Germany VAT is at 19%

Mathematics

1 answer:

NeX [460]3 years ago

8 0

Answer:

ok.

Step-by-step explanation:

Not a question.

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If the scale factor of a dilation is equal to -1, then the figure will

Pie

Answer:

Rotated 180 degrees.

Step-by-step explanation:

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3 years ago

Which number sentence is true?

IRINA_888 [86]

Answer:

D is the true answer.

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0.006262 is smaller than 0.062

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3 years ago

A storage container is shaped like a rectangular prism. The volume of the container is 2415 cubic feet. The area of the base of

lubasha [3.4K]

Answer:

11.5 feet

Step-by-step explanation:

To solve this question first you take the volume which is 2415 and divide it by 210 to get your answer as 11.5 feet

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4 years ago

Read 2 more answers

The GCF of two numbers is 850. Neither number is divisible by the other. what is the smallest that these two numbers could be?

bazaltina [42]

F(18)=(1,2,3,6,9,10) f(27) =(1,3,9,27) GCF =9 GCF =250, numbers are 2 (850) and 3 (850) or 1700 and 2550

6 0

4 years ago

If nCr : (n+1)Cr : (n+2)Cr = 1:3:7, find the values of n and r.

Troyanec [42]

The solution is n = 5 and r = 4

Step-by-step explanation:

Given,

nCr : (n+1)Cr : (n+2)Cr = 1:3:7

To find the value of n and r.

Formula

nCr = $\frac{n!}{r!(n-r)!}$ [ n! means = n.(n-1).(n-2)....3.2.1]

Now,

nCr : (n+1)Cr = 1:3 and (n+1)Cr : (n+2)Cr = 3:7

or, $\frac{n!}{r!(n-r)!}$ : $\frac{(n+1)!}{r!(n+1-r)!}$ = 1:3 or, $\frac{(n+1)!}{r!(n+1-r)!}$ : $\frac{(n+2)!}{r!(n+2-r)!}$ = $\frac{3}{7}$

or, $\frac{n!}{r!(n-r)!}$ × $\frac{r!(n+1-r)!}{(n+1)!}$ = $\frac{1}{3}$ or, $\frac{(n+1)!}{r!(n+1-r)!}$ × $\frac{r!(n+2-r)!}{(n+2)!}$ = $\frac{3}{7}$

or, $\frac{n+1-r}{n+1}$ = $\frac{1}{3}$ or, $\frac{n+2-r}{n+2}$ = $\frac{3}{7}$

or, 3(n+1-r) = n+1 or, 7(n+2-r) = 3(n+2)

or, 3n+3-3r = n+1 or, 7n+14-7r = 3n+6

or, 2n-3r = -2 or, 4n-7r = -8

Now, by solving

2n-3r = -2 -----(1)

4n-7r = -8 -----(2) we will get n and r

Multiplying (1) by and then subtract with (2) we get,

2(2n-3r) - (4n-7r) = -4-(-8)

or, 4n-6r-4n+7r = 4

or, r = 4

From (1) we get,

2n = -2+3(4)

or, 2n = 10

or, n = 5

Hence,

n = 5 and r = 4

8 0

4 years ago