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kirza4 [7]
2 years ago
11

Combine the like terms to create an equivalent expression −n+(−3)+3n+5

Mathematics
2 answers:
spin [16.1K]2 years ago
6 0

Answer:

2n+2

Step-by-step explanation:

Viefleur [7K]2 years ago
3 0
An equivalent expression would be 2•(n+1)
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Any answers? No need for an explanation if you want to sure, the answer would be appreciated!
Simora [160]
Yes because 9+4 = 13 and if you plug in the y and x it turns out true
6 0
2 years ago
Use a reference angle to write sec255∘ in terms of the secant of a positive acute angle. Do not include the degree symbol in you
jarptica [38.1K]

Answer: sec (75) or csc (15)

Step-by-step explanation:

255 is in the 3rd quadrant where the secant is. Here, the tangent and cotangent is positive.

Reference angle for 255 is,

255 - 180 = 75 degrees.

Therefore, sec (255) = sec (75)

= csc (90 - 75) = csc (15)

6 0
3 years ago
MAY SOMEONE PLZ HELP ME ON THIS, I DONT KNOW THE EQACTION
just olya [345]

Answer:

I will use "complete-the-square" approach if thats ok

first 0.5(x - 2)² - 2

second -2(x - 4)² + 8

7 0
2 years ago
Six identical squares are cut from the corners and edges of an 80 cm by 50 cm cardboard rectangle. the remaining piece is folded
Anna11 [10]
Check the picture.

let the length of a side of each of the squares removed be x.

The box formed will have dimensions: 80-2x, 50-2x, x(the height)

So the volume can be expressed as a function of x as follows:

f(x)=(80-2x)(50-2x)x=[4000-160x-100x+4 x^{2} ]x=(4 x^{2}-260x+4000)x

so f(x)=4 x^{3}-260x^{2}+4000x

the solutions of f'(x)=0 gives the inflection points, so the candidates for maxima points,

f'(x)=12x^{2}-520 x +4000=0

solving the quadratic equation, either by a calculator, graphing software, or by other algebraic methods as the discriminant formula, we find the solutions

x=10 and x=33.333

plug in f(x) these values to see which greater:

f(10)=(80-20)(50-20)10=60*30*10=18000 cm cubed

f(33.333)=(80-66.666)(50-66.666)33.333= which is negative because (50-66.666)<0



Answer: 18000 cm cubed

5 0
2 years ago
Read 2 more answers
7 gal 1 pt - 2 gal 7 pt =
Rus_ich [418]

Answer:

4 gal 2 pt

Step-by-step explanation:

8 pt = 1 gal

7 gal 1 pt = 57 pt

2 gal 7 pt = 23 pt

57 pt - 23 pt = 34 pt

34 pt = 4 gal 2 pt

5 0
3 years ago
Read 2 more answers
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