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11Alexandr11 [23.1K]
3 years ago
9

Can you simplify 3k+8-k+72

Mathematics
2 answers:
Vlada [557]3 years ago
5 0

Answer:

2k+18

Step-by-step explanation:


Lelu [443]3 years ago
4 0

Answer:

2k + 80

Step-by-step explanation:

Combine like terms.

3k + 8 - k + 72 =

= 3k - k + 8 + 72

= 2k + 80

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Sam does 11 jumping jacks in 8 seconds. If he does the jumping jacks at a constant rate, how many jumping jacks can he do in 20
Anon25 [30]

Answer:

baila como juana la cubana

Step-by-step explanation:

7 0
2 years ago
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Solve four square root of two plus five square root of four and explain whether the answer is rational or irrational. The answer
Rina8888 [55]

Answer:

A.The answer four square root of two plus ten is irrational because the sum of a rational number and irrational number is an irrational number.

Step-by-step explanation:

Given the question as 4√2 + 5√4 the sum is  

4√2 + 5*√4

4√2 + 5*2

4√2 + 10

Putting an irrational number in decimal form, it goes on forever without repeating.

4*√2 +10 = 4× 1.41421356237 +10

=15.6568542495----------------which irrational

8 0
3 years ago
Read 2 more answers
Simplify 4a​ +​ ​ ​8b ​ -​ ​ ​6b​ +​ ​ 2a​
Deffense [45]
Here is your answer:                                                                                                                              Combine like terms:                                                                                              4a+2a=6a and 8b-6b=2b                                                                                        Your answer is 6a+2b
8 0
2 years ago
The rectangle below has an area of x^2-7x+10square meters and a width of x - 5 meters. What expression represents the length of
jolli1 [7]

Answer:

L = (x - 2) meters

Step-by-step explanation:

The area of the rectangle = (x² - 7x + 10) m²

The width = (x - 5) m

length = ?

Area of a rectangle = length × width

x² - 7x + 10 = L(x -5)

note L = length

divide both sides by (x-5)

(x² - 7x + 10)/(x - 5) = L

L = x² - 7x + 10 / (x -5)

Factorize x² - 7x + 10

find the numbers you can multiply to give you 10 and also add to give you -7

The numbers are -2 and -5. Therefore,

x² - 2x - 5x + 10 = 0

x(x - 2) - 5(x - 2) = 0

(x-5)(x-2) = 0

Let us go back to our division

L = x² - 7x + 10 / (x -5)

x² - 7x + 10 = (x-5)(x-2)

L = (x-5)(x-2) / (x -5)

L = (x - 2) meters

7 0
2 years ago
Me ajudem com a 3º questão
Alisiya [41]

I can't read that language but I'll guess it says write a second degree equation then solve for n when d=10.

10 = \dfrac{n(n-3)}{2}

20 = n^2 - 3n

n^2 - 3n - 20 = 0

Answer: n² - 3n - 20 = 0

That doesn't factor so there is no integer n solution.

That means there are no polygons with 10 diagonals.

n = \frac 1 2(3 \pm \sqrt{89})

7 0
2 years ago
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