The perimeter of of of parallelogran is 25 feet find y

A while back, either James borrow $12 from his friend Rita or she borrowed $12 from him, but he can't quite remember which. Eith

adell [148]

|x-42.80|=12. Hope it helps

5 0

4 years ago

Alicia buys 4 scarves. She pays $75.20 plus an additional $5.26 in tax for the scarves. Alicia determines that each scarf cost $

Serggg [28]

Alicia buys 4 scarves. She pays $75.20 plus an additional $5.26 in tax for the scarves

Total cost paid for 4 scarves = 75.20 + 5.26 = 80.46

to find cost of 1 scarve we divide the total cost by 4

$\frac{80.46}{4} =20.115= 20.12$

Alicia determines that each scarf cost $20.12

We got the same cost . So Alicia's calculation is correct.

5 0

4 years ago

Find the product of (2x − 3)(2x2 7x − 1). 4x3 − 6x2 − 9x 3 4x3 8x2 − 23x 3 4x3 20x2 − 9x 3 4x3 − 6x2 − 23x 3.

wlad13 [49]

Product of polynomials can be done by distribution of multiplication over addition. The product of $(2x - 3)(2x^2 + 7x - 1)$ is $4x^3 + 8x^2 -23x + 3$

<h3>What is distributive property of multiplication over addition?</h3>

Suppose a, b and c are three numbers. Then we have:

$a(b + c) = a\times b + a\times c$

(a(b+c) means a multiplied to (b+c). The sign of multiplication is usually hidden when using symbols and both quantities which are in multiplication are written together without space)

The product result of the given expression is

$(2x - 3)(2x^2 + 7x - 1) = 2x(2x^2 + 7x - 1) -3(2x^2 + 7x - 1) \\(2x - 3)(2x^2 + 7x - 1) = 4x^{1+2} + 14x^2 -2x - 6x^2 - 21x + 3\\(2x - 3)(2x^2 + 7x - 1) = 4x^3 + (14 -6)x^2 + (-2 -21)x + 3\\(2x - 3)(2x^2 + 7x - 1) = 4x^3 + 8x^2 -23x + 3$

It is because when bases are same and there is multiplication, then powers add up, so we have: $a^b \times a^c = a^{b+c}$

Also, we've

$(-ve \times (+ve) = -ve\\(-ve) \times (-ve) = +ve\\(+ve) \times (+ve) = +ve\\(+ve) \times (-ve) = -ve$

where -ve, +ve are sign of operands and result.

That's why $2 \times -1 = -2$

Thus,

The product of $(2x - 3)(2x^2 + 7x - 1)$ is $4x^3 + 8x^2 -23x + 3$

Learn more about product of polynomials here:

brainly.com/question/9106484

8 0

3 years ago

Nancie and Suresh are typing. The rate at which Nancie is typing is represented by the equation y = 35x, where x is the time in

Novosadov [1.4K]

I think you might have forgotten to add Suresh typing speed table....

Time (min) Total words
0.5 28
3 168
14 784

We can easily obtain Suresh typing speed by dividing Total Words/Time

Time (min)   Total words Speed (Words/min)
0.5 28 56
3   168 56
14 784    56

And we know that Nancie's typing speed is 35 Words/ min

So, Nancie's rate is less than Suresh's/

6 0

4 years ago

What two positive real numbers whose product is 50 have the smallest possible sum?

Llana [10]

X * y = 50
y = 50 / x
S = x + y = x + 50 / x
S` = 1 - 50 / x²
1 - 50 / x² = 0
50 / x² = 1
x² = 50
x = √ 50 = 5 √2
y = 50 / 5√2 = 5 √2
Answer:
Those numbers are: x = 5√2 and y = 5√2.

7 0

3 years ago