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Stella [2.4K]
3 years ago
8

Noni is looking for the sum of a number, n, and 21.

Mathematics
2 answers:
Olegator [25]3 years ago
7 0
To determine what the value, is simply convert this word expression into an algebraic one.

Sum of n and 21 = n + 21

To find out the value, plug in n = 8.

N + 21
8 + 21
29.

Noni is looking for the value of 29.
LekaFEV [45]3 years ago
3 0

Answer:

if n = 8 then the answer is 29

Step-by-step explanation:

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Will give brainliest to the 1st right answer!!!!
monitta

Step-by-step explanation:

c is the answer

can i have brainliest

3 0
3 years ago
Factor 2x 2 - 10x + 8 completely.
murzikaleks [220]

Answer:

2(x-1)(x-4)

Step-by-step explanation:

Begin by dividing each term by 2 and pulling the 2 to the front.

2x^2-10x+8 = 2(x^2-5x+4)

This is a trinomial. Trinomials are three term algebraic expressions typically featuring variables to exponent powers. To break these trinomials down we factor them using the diamond method or GCF. The diamond method states that for a trinomial ax^2+bx+c multiply a*c then find two numbers which multiply to this number and add to b. When you find those numbers, write them as (x-/+ number)(x-/+number).

x^2-5x+4

a=1, c=4

ac=4 and add to b=-5 which -1 and -4 satisfy

The factored form is 2(x-1)(x-4).


6 0
3 years ago
Please help (long division)
Ivanshal [37]

Answer:

8y^5-6y⁴+1 is the answer

5 0
3 years ago
Pls help WILL GIVE BRAINLIST
myrzilka [38]

Answer:

<u>135.94 feet</u>

Step-by-step explanation:

Split the problem into two parts :

  1. Distance between viewer and building
  2. Height of the top part of the building

<u>Distance between viewer and building</u>

  • The lower part of the building is 40 feet, as it is mentioned the viewer is 40 feet above street level
  • Let the distance be called 'd'
  • Therefore, tan37° = 40/d
  • tan37° = 3/4 = 0.75
  • ⇒ 40/d = 0.75
  • ⇒ d = 40/(3/4) = 40 x 4/3 = 160/3 = 53.3 feet

<u>Height of the top part of the building</u>

  • Let the height of the top part be 'h'
  • Therefore, tan61° = h/d = h/53.3
  • tan61° = 1.8
  • ⇒ h/53.3 = 1.8
  • ⇒ h = 53.3 x 1.8 = 95.94 feet

<u>Total height of building</u>

  • Lower part + Top part
  • 40 + 95.94
  • <u>135.94 feet</u>

<u />

3 0
2 years ago
I'm not sure how to start solving the problem (I'm not sure if I need to find circumference/perimeter bc it's asking how much pa
katrin [286]
The answer would be approximately 56.52 inches squared.

You are suppose to find the lateral surface area, since the label only go around the can, excluding the top and bottom.
To find the lateral surface area, you'd need to find the circumference of the circle, and then multiply that by the height.
Since C = πd, 3.14..*3 ≈ 9.42. And 9.42*6 = 56.52. Conclusively, the approximate amount of paper needed to make the can's label would be about 56.52 inches squared.
8 0
3 years ago
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