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3 years ago

Write the expression with fewer terms. 10x-2x

Mathematics

2 answers:

andreyandreev [35.5K]3 years ago

6 0

Answer:

It would be 8x

Step-by-step explanation:

Since 10x and -2x are like terms, you can subtract -2x from 10x to get 8x.

10x - 2x = 8x

Ivanshal [37]3 years ago

5 0

Answer:

Step-by-step explanation:

Collect like terms by subtracting their coefficients.

(10 - 2)x = 8x

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Help me with this question plz Solve: 3x + 9 = 4x

vovikov84 [41]

9 = x

subtract 3x from both sides of the equation and you're left with 9=x

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3 years ago

Solve |x - 1|>4 a. {x|x< -5 or x> 5} b. {x|-3< x< 5} c. {x|x< -3 or x> 5}

Karo-lina-s [1.5K]

|x - 1| > 4 ⇔ x - 1 > 4 or x - 1 < -4 |add 1 to both sides

x > 5 or x < -3

Answer: c. {x| x < -3 or x > 5}.

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3 years ago

How many integers between 10 and 60, inclusive, can be evenly divided by neither 2 nor 3?

erastovalidia [21]

Find total number of integers.

$a_1=10,a_n=60,d=1 \\a_n=a_1+(n-1)d \\60=10+(n-1)1 \\n-1=50 \\n=51$

Find how many integers is divisible by 2.

$a_1=10,a_n=60,d=2
\\a_n=a_1+(n-1)d
\\60=10+(n-1)2
\\2(n-1)=50
\\n-1=25
\\n=26$

Eliminate even numbers.

11, 13, 15,..., 57, 59

This array contains 51 - 26 = 25 numbers.

Eliminate numbers before the first number divisible by 3 and after the last number divisible by 3.

15, 17, 19,..., 55, 57

This array contains 25 - 3 = 22 numbers.

Now we should eliminate numbers divisible by 3: 15, 21, 27...

$a_1=15,a_n=57,d=6,n=?
\\a_n=a_1+(n-1)d
\\57=15+(n-1)6
\\6(n-1)=42
\\n-1=7
\\n=8$

There are 8 such numbers.

Therefore, there are 25 - 8 = 17 numbers that can be evenly divided by neither 2 nor 3

6 0

4 years ago

Solve for x:4(2x-1)=2x+35

Katyanochek1 [597]

8x-4=2x+35
8x-2x=35+4
6x=39
X=39/6

6 0

3 years ago

Read 2 more answers

What is the length of the unknown leg in the right triangle? A right triangle has a side with length 20 meters, hypotenuse with

galben [10]

The length of the unknown leg of the triangle is 15 m.

Step-by-step explanation:

Length of one leg = 20 m

Length of the hypotenuse= 25m

As it is a right angled triangle we can use pythogoras theorem.

Let the unknown length be y

(20) (20) + y(y) = (25) (25)

400 + y(y) = 625

y(y) = 225

y = √225

y = 15

The length of the unknown leg is 15 m.

6 0

3 years ago

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Write the expression with fewer terms. 10x-2x​

Write the expression with fewer terms. 10x-2x