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azamat
3 years ago
13

Find the perimeter of a rectangle with length 7x - 2 and width 5x^2 + 1.

Mathematics
1 answer:
stealth61 [152]3 years ago
4 0

Answer:

10x^2 + 14x - 2

Step-by-step explanation:

So for the perimeter, you have to solve 2(7x-2) + 2(5x^2+1)

So distribute the 2s on both s we get 14x - 4 + 10x^2 + 2

This in standard form is 10x^2 + 14x - 2

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Homework ree
umka21 [38]

Answer:

325 miles and 77 dollars

Step-by-step explanation:

First, create equations. Let x equal the miles driven. The first plan expression  is 38 + 0.12x and the second plan expression is 51 + 0.08x. Setting these equal and solve for x: 38 + 0.12x = 51 + 0.08x -> 0.04x = 13 -> x = 325 miles.

The cost is found by substituting it into any of the expressions: 51 + 0.08(325) = 77 or 38 + 0.12(325) = 77

6 0
3 years ago
Really need help, 20 points!
babymother [125]
I'm sorry ninth grade slow learner


4 0
3 years ago
How many solutions exist for the given equation?
Tpy6a [65]

Answer:

infinitely many

Step-by-step explanation:

12x + 1 = 3(4x + 1) - 2

Distribute

12x + 1 = 12x + 3 - 2

Combine like terms

12x+1 = 12x +1

Subtract 12x from each side

1 =1

Since this is always true, we have infinite solutions

4 0
3 years ago
Read 2 more answers
Find the sum to infinity​
boyakko [2]

Answer:

-7/27

Step-by-step explanation:

-14/54

Hope this helped :)

6 0
2 years ago
Maddy bought 2 ⅔ pounds of grapes and 1 ⅕ pounds of apples. If she bought bananas that weighed 1 ¼ times as much as the grapes,
spin [16.1K]

Answer:

3 whole number, 1/3

Step-by-step explanation:

To solve this, Multiply the value of the banana to the weight of the Grapes.

Please find the attached file for a comprehensive Solution.

Maths is fun !

4 0
3 years ago
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