3 years ago

¿Cuanto es 3x+2x? Con desarrollo porfavor

Mathematics

1 answer:

IceJOKER [234]3 years ago

4 0

3x+2x= 5x

Sorry, I cant understand what the second line means, hopefully this helped:)

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Evaluate. <br><br> 1 - 3 times 7 + 4 times 2=<br> A. -12 B. -32 C. -28 D. -20

hammer [34]

The answer would be A) -12.

1 - 21 + 4 * 2 (simplify 3 * 7 to 21)

1 - 21 + 8 ( simplify 4 * 2 to 8)

-12 (simplify).

5 0

4 years ago

Which year is the best prediction for when 1206 people will attend graduate school?

Makovka662 [10]

Answer:

D year 15

Step-by-step explanation:

Given:

y= 8x^2-40x+6

year is the best prediction for when 1206

Finding value of x for y=1206

8x^2-40x+6= 1206

8x^2-40x+6-1206=0

8x^2-40x-1200=0

Solving the above by quadratic formula:

x= $\frac{-b\sqrt{b^{2}-4ac } }{2a}$

= $\frac{40\sqrt{40^{2}-4(8)(-1200) } }{2(8)}$

x= 15 and x= -10

As year can not be negative, hence correct answer is

D: year 15!

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4 years ago

If 22/15 = 23/x what is x equal to

KengaRu [80]

Answer:

15.68

Step-by-step explanation:

22/15=23/x

cross product

15*23=22*x

345=22x

x=345/22

x=15.68

7 0

3 years ago

Help with any of these please ! Or<br> All I will mark brainlest

Contact [7]

1: A
2: D
3: D
4: C
5: C
6: A

I do hope these are all correct! If not I apologize lol

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3 years ago

Find the surface area of a cylinder with a base radius of 5 ft and a height of 6 ft.

Nadusha1986 [10]

Answer: 110pi

Solution: S = 2•pi•r•h + 2 pi•r^2 =2•6•5pi + 2•pi•25 = 60pi + 50pi = 110pi

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2 years ago