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3 years ago

Can someone help plz?????

Mathematics

2 answers:

Keith_Richards [23]3 years ago

6 0

Answer:

Step-by-step explanation:

-2-(-4) = -2 + 4

B shows subtracting 2 to the left then adding 4 to the right.

kozerog [31]3 years ago

6 0

Answer:

Step-by-step explanation:

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How do I solve question 5?

Nezavi [6.7K]

A) x^2 + y^2 = 80
B) x * y = 12

What is x^2 -y^2?
B) x * y = 12
So y = 12 / x
A) x^2 + (12/x)^2 = 80
x^2 + (12/x)^2 = 80
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Multiplying each side by x^2
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3 years ago

A florist has to choose four different types of flowers to include in a bouquet. In how many ways can the florist do this, if th

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Answer:

Step-by-step explanation:

Given:

Type of Flowers = 5

To choose = 4

Required

Number of ways 4 can be chosen

The first flower can be chosen in 5 ways

The second flower can be chosen in 4 ways

The third flower can be chosen in 3 ways

The fourth flower can be chosen in 2 ways

Total Number of Selection = 5 * 4 * 3 * 2

Total Number of Selection = 120 ways;

Alternatively, this can be solved using concept of Permutation;

Given that 4 flowers to be chosen from 5,

then n = 5 and r = 4

Such that

$nPr = \frac{n!}{(n - r)!}$

Substitute 5 for n and 4 for r

$5P4 = \frac{5!}{(5 - 4)!}$

$5P4 = \frac{5!}{1!}$

$5P4 = \frac{5*4*3*2*1}{1}$

$5P4 = \frac{120}{1}$

$5P4 = 120$

Hence, the number of ways the florist can chose 4 flowers from 5 is 120 ways

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3 years ago

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3 years ago

Suppose the man in the St. Ives poem has x wives, each wife has x sacks, each sack has x cats, and each cat has x kits. Write an

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Answer: $x+x^2+x^3+x^4$