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2 years ago

Help me please with that one

Mathematics

1 answer:

zubka84 [21]2 years ago

8 0

The length of the wall would be 52 inches,why because you know that i inch iss 6 ft and because you already have 8 inches go ahead and multiply 8 by 6 and you get 48. you need to figure out what is 2/3 of 6 and it is 4 because 2 goes into 6 three times so 2+2 is 4. let me know if this helps you at all or if you have any questions

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In the equation (x^2+y)^5, what is the coefficient of the term x^4y^3? what is the coefficient of the same term in the expansion

lys-0071 [83]

$\displaystyle
(x+y)^n=\sum_{k=0}^n\binom{n}{k}x^{n-k}y^k$

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$\displaystyle
(x^2+y)^n=\sum_{k=0}^n\binom{n}{k}x^{2n-2k}y^k\\
n=5\\
k=3\\\\\binom{5}{3}=\dfrac{5!}{3!2!}=\dfrac{4\cdor5}{2}=10$

It's 10.

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$\displaystyle
(3x^2+y)^n=\sum_{k=0}^n\binom{n}{k}(3x)^{2n-2k}y^k=\sum_{k=0}^n\binom{n}{k}\cdot 3^{2n-2k}\cdot x^{2n-2k}y^k\\\\
n=5\\
k=4\\\\
\binom{5}{3}\cdot3^{2\cdot5-2\cdot4}=10\cdot3^{2}=10\cdot9=90$

It's 90

6 0

3 years ago

The area of sandbox in park is represented by 2X^2-5x-3 find the dimensions of the sandbox in terms of

lora16 [44]

Answer:

The dimension of the sandbox is (2x+1) by (x - 3)

Step-by-step explanation:

It seems the complete question will be:

The area of sandbox in park is represented by 2X^2-5x-3 find the dimensions of the sandbox in terms of x.

Step-by-step explanation:

From the question, the given expression is 2X^2-5x-3. This can be rewritten as

$2x^{2} -5x-3$

If the area of the sandbox in park is represented by this expression, then the dimensions of the sandbox will be the product of the factors. To determine the factors, we will factorize the given quadratic expression.

Factorizing the expression $2x^{2} -5x-3$ , we get

$2x^{2} -6x+x-3$

$2x(x-3)+1(x-3)$

$(2x+1)(x-3)$

Hence, the dimension of the sandbox is (2x+1) by (x - 3)

6 0

3 years ago

Ed’s rental charges a flat fee of $5 plus $2 per hour to rent a pair of skates.

zavuch27 [327]

Flat doesn't change
2 changes with x
y=2x+5
yint is 5

to graph
start at center and go 5 up, that is y intercept
go 1 right and 2 up, that is another point

y=2(2)+5
y=4+5
y=9
cost $9 to rent for 2 hours

5 0

3 years ago

14 - 2x = 3(x - 2) what is the answer

RSB [31]

The answer will be x=4

4 0

2 years ago

What is 15.36x(-0.45)

lord [1]

Simplifying 15.36x[-0.45] = 0 Reorder the terms for easier multiplication: 15.36 * -0.45x = 0 Multiply 15.36 * -0.45 -6.912x = 0 Solving -6.912x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '-6.912'. x = 0 Simplifying x = 0

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3 years ago

Read 2 more answers