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3 years ago

X+y=12 3x = 2y + 6 system of elimination

Mathematics

1 answer:

Tasya [4]3 years ago

3 0

Answer:

(x,y)=(6,6)

Step-by-step explanation:

there you go

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2x-1=4 -2x+y=8 Find the value of x

andrezito [222]

Answer:

Step-by-step explanation:

2x=5

x=2.5

4 0

2 years ago

A package of 4 red,white and blue hats costs $8. What is the unit rate

love history [14]

Answer:

$2/ hat

Step-by-step explanation:

Find the unit rate:

$ to hats

8 to 4

Divide by four to get the unit rate; over 1

2 to 1

So, $2 per hat

Hope this helps!

8 0

2 years ago

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2.333333 as a fraction

Arada [10]

Answer:

2333333/1000000

Step-by-step explanation:

I hope this helps you :)

6 0

3 years ago

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

Find slope : (7,17) (9,1)

alina1380 [7]

Answer:

7/17 and 1/9 0r 9/1

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers