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3 years ago

Find the value of the nearest tenth X=

Mathematics

1 answer:

Alex777 [14]3 years ago

8 0

Answer:

12,7

Step-by-step explanation:

use pathogaras theorem

c^2=a^2+b^2

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What is the fourth term in the binomial expansion (a+b)^6)

Dafna11 [192]

Answer:

$20a^3b^3$

Step-by-step explanation:

Binomial Series

$(a+b)^n=a^n+\dfrac{n!}{1!(n-1)!}a^{n-1}b+\dfrac{n!}{2!(n-2)!}a^{n-2}b^2+...+\dfrac{n!}{r!(n-r)!}a^{n-r}b^r+...+b^n$

Factorial is denoted by an exclamation mark "!" placed after the number. It means to multiply all whole numbers from the given number down to 1.

Example: 4! = 4 × 3 × 2 × 1

Therefore, the fourth term in the binomial expansion (a + b)⁶ is:

$\implies \dfrac{n!}{3!(n-3)!}a^{n-3}b^3$

$\implies \dfrac{6!}{3!(6-3)!}a^{6-3}b^3$

$\implies \dfrac{6!}{3!3!}a^{3}b^3$

$\implies \left(\dfrac{6 \times 5 \times 4 \times \diagup\!\!\!\!3 \times \diagup\!\!\!\!2 \times \diagup\!\!\!\!1}{3 \times 2 \times 1 \times \diagup\!\!\!\!3 \times \diagup\!\!\!\!2 \times \diagup\!\!\!\!1}\right)a^{3}b^3$

$\implies \left(\dfrac{120}{6}\right)a^{3}b^3$

$\implies 20a^3b^3$

7 0

2 years ago

Omar says 0.35 is smaller than 5 Explain why he is correct

NISA [10]

Answer:

Because a decimal leading with a zero is always smaller than a whole number

Step-by-step explanation:

7 0

2 years ago

literal equations write formula that describes how much Denise spends at the books sale b equals the cost of each book n equals

igomit [66]

So, the answer is b multiplied by n or

b·n

Because she buys n books, and each book costs b dollars, so n·b gives you the total

6 0

3 years ago

Read 2 more answers

Z = -3a + 1 Solve for a Thanks

Sunny_sXe [5.5K]

Answer:

z-1/-3

Step-by-step explanation:

z-1=-3a

z-1/-3=a

4 0

2 years ago

FIRST TO ANSWER GETS BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

uysha [10]

10h+120p=950.50
h+p=12
p=?

h+p=12
-p both sides
h=12-p

plug in to 10h+120p=950.50
10 (12-p)+120p=950.50
distribute
120-10p+120p=950.50
simplify
120+110p=950.50
-120 both sides
110p=830.50
÷110 both sides
p=7.55

6 0

3 years ago