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Vlad1618 [11]
2 years ago
12

Can someone please help me out

Mathematics
1 answer:
const2013 [10]2 years ago
8 0

Answer:

x = 8, A = 182 units²

Step-by-step explanation:

The perimeter P of a rectangle is calculated as

P = 2l + 2b ( l is the length and b the breadth )

Given P = 66, then

2(7) + 2(3x + 2) = 66 ← distribute and simplify left side

14 + 6x + 4 = 66

6x + 18 = 66 ( subtract 18 from both sides )

6x = 48 ( divide both sides by 6 )

x = 8

Then

3x + 2 = 3(8) + 2 = 24 + 2 = 26, so

A = 7 × 26 = 182 units²

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The value -2 is a lower bound for the zeros of the function shown below.
Tju [1.3M]

Answer:

False

Step-by-step explanation:

f(x) = 4x³ - 12x² - x + 15

Set output to 0.

Factor the function.

0 = (x + 1)(2x - 3)(2x - 5)

Set factors equal to 0.

x + 1 = 0

x = -1

2x - 3 = 0

2x = 3

x = 3/2

2x - 5 = 0

2x = 5

x = 5/2

-2 is not a lower bound for the zeros of the function.

7 0
3 years ago
Which is the best first step to write this in standard form?
goldenfox [79]

Answer:

<em>Set the function equal to 0</em>

Step-by-step explanation:

<u>Standard Form of the Quadratic Equation</u>

The form

ax^2+bx+c=0

is called the standard form of a quadratic equation. It can be clearly identified the terms of a second-degree polynomial equated to 0.

The equation is given in the form:

2(x-4)^2-3=8

And we need to operate the expression to make it look like a standard form. The first logical step should be to set the function equal to 0 and then start to operate the resulting expression. It can be done by subtracting 8 on both sides of the equation:

2(x-4)^2-3-8=0

Answer: Set the function equal to 0

4 0
3 years ago
HELP PLS
const2013 [10]
The answer is square pyramid hope this helps
4 0
3 years ago
Read 2 more answers
James and Michael are the partners in a local business. They needed $480,000 to start the
larisa [96]

Answer:

James invested $160,000

Step-by-step explanation:

- In total, they needed $480,000 to start the business

- 1:2 ratio means one of them payed double the amount than the other

so the expression would be,

2x + x = 480,000

Let x represent how much they each need to invest

the expression can be simplified to,

3x = 480,000

now you need to get x alone, this would be done be dividing both sides by 3

\frac{3x}{3} = \frac{480,000}{3}\\x = 160,000

James invest $160,000

Michael invest $160,000 x 2 = $320,000

and if you add them together, you get the total amount

$320,000 + $160,000 = $480,000

Let me know if you have any questions !

7 0
1 year ago
Read 2 more answers
When a researcher asked 35 people if they liked a new brand of toilet paper; 22 said 'yes', 8 said 'no' and 5 were 'undecided'.
VARVARA [1.3K]
I guess maybe 5/35 because there are only 5 chances that you could get one of the 5 in the 35 people
6 0
3 years ago
Read 2 more answers
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