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Assoli18 [71]
2 years ago
9

(x + 10) (-2x +15)cam someone this for me​

Mathematics
1 answer:
Rudik [331]2 years ago
7 0

Answer:

-2x^2-5x+150

Step-by-step explanation:

(x)(-2x) + (x)(15) + (10)(-2x)+(10)(15) <--- multiplying

2x^2+15x-20x+150 <---- solution of multiplication

2x^2 - 5x+150 <------- combine like terms (answer)

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Hello,
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3 years ago
Write a function that is passed in a positive integer, n, and sum up all the digits from 1 to n, doubling the even numbers. In o
olya-2409 [2.1K]

Answer:

Written in Python

def sums(n):

    total = 0

    for i in range(1,n+1):

         if i%2 == 0:

              total = total + i*2

         else:

              total = total + i

    return(total)

Step-by-step explanation:

The function is written in Python

def sums(n):

This initializes total to 0

    total = 0

This iterates through the integers that makes up n i.e. 1,2,3.....n

    for i in range(1,n+1):

This checks if current digit is even

         if i%2 == 0:

If yes, it adds the double of the digit

              total = total + i*2

         else:

If otherwise, it adds the digit

              total = total + i

This prints the calculated sum or total

    return(total)

To call the function from main, use the following:

print(sums(n))

Where n is a positive integer. i.e. n \geq 1

6 0
3 years ago
PLS PLS PLS PLSSSSS HELPPPP
ioda

Answer: 14

Step-by-step explanation:

Okay so it asks in all, which means morning distance + afternoon distance

We got the afternoon distance so now we have to find the morning one

it says the afternoon distance (6), is 25% less than the morning distance.

Which means the afternoon distance is 0.75 of the morning distance.

so 0.75x = 6, x = 6/0.75 = 8

Then you add 8 to 6 to get 14

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3 years ago
2x+1=5x-8 Solving Equations with Many or No Solutions
aliina [53]

Hello!

\large\boxed{x = 3}

2x + 1 = 5x - 8

Solve by subtracting both sides by 2x:

2x - 2x + 1 = 5x - 2x - 8

1 = 3x - 8

Add 8 to both sides:

1 + 8 = 3x - 8 + 8

9 = 3x

Divide both sides by 3:

9/3 = 3x/3

x = 3

3 0
3 years ago
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