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4 years ago

What is the simplified expression of 2(x-5)?

2 answers:

6 0

You apply the distributive property which means that the 2 should multiply both the x and the -5. You get:

2*x - 2*5 = 2x-10

Gekata [30.6K]4 years ago

4 0

The simplified expression of 2(x-5) is 2x - 10.

x does not have a value and therefore must be a coefficient.

5 is a normal number and can be multiplied with 2.

You might be interested in

. Find four consecutive odd integers such that the sum of the first and fourth is 55 greater than the opposite of the third.

Setler79 [48]

Answer:

The four consecutive odd integers = 15, 17, 19, 21

Step-by-step explanation:

Four consecutive odd integers in Mathematics when x is an integer is given as:

x , x + 2 , x + 4, x + 6

Where:.

First integer = x

Second integer = x + 2

Third integer = x + 4

Fourth integer = x + 6

The sum of the first and fourth is 55 greater than the opposite of the third

Hence :

x + x + 6 = -(x + 4) + 55

x + x+6 = (-x - 4) + 55

2x + 6 = -x + 51

Collect like terms

2x + x = 51 - 6

3x = 45

x = 15

Therefore,

First integer = x = 15

Second integer = x + 2 = 15 + 2 = 17

Third integer = x + 4 = 15 + 4 = 19

Fourth integer = x + 6 = 15 + 6 = 21

The four consecutive odd integers = 15, 17, 19, 21

4 0

4 years ago

21, 31, 26, 24, 25, 26<br>Mean:<br>Median:<br>Mode:<br>Range:

BlackZzzverrR [31]

Order them from smallest to largest:
21, 24, 25, 26, 26, 31

mean: 25.5
add all the numbers up and divide them by 6.

median: 25.5
the number in between 25 & 26.

mode: 26
there are two 26’s in the pattern.

range: 21-31

4 0

3 years ago

Nathan needed to get change for a dollar. Which coin amount is equal to 1.00

Angelina_Jolie [31]

Answer:

4 Quarters. 10 dimes. 20 nickels. 100 pennies.

Step-by-step explanation:

I hope this helps! Please give me brainliest!

4 0

3 years ago

1. What is 75% of 28?

kolezko [41]

Hey there! :)

(1) Change to decimal and multiply by the number you need to find the % of

75% as a decimal = 0.75

0.75 × 28 = 21

Your answer is 21
_____________________________________________________________

(2) Circumference = π · diameter

To find diameter, divide circumference by π

Circumference = 37.68

37.68 ÷ π = 11.99 = 12

The diameter is 12

Hope this helps :)

4 0

3 years ago

If c is the line segment connecting (x1,y1) to (x2,y2), show that the line integral of xdy-ydx=x1y2-x2y1......this is in a chapt

MatroZZZ [7]

Green's theorem doesn't really apply here. GT relates the line integral over some *closed* connected contour that bounds some region (like a circular path that serves as the boundary to a disk). A line segment doesn't form a region since it's completely one-dimensional.

At any rate, we can still compute the line integral just fine. It's just that GT is irrelevant.

We parameterize the line segment by

$\mathbf r(t)=\langle x_1,y_1\rangle(1-t)+\langle x_2,y_2\rangle t$
$\implies\mathbf r(t)=\langle x_1+(x_2-x_1)t,y_1+(y_2-y_1)t\rangle$

with $0\le t\le1$ . Then we find the differential:

$\mathbf r(t)\equiv\langle x,y\rangle=\langle x_1+(x_2-x_1)t,y_1+(y_2-y_1)t\rangle$
$\implies\mathrm d\mathbf r\equiv\langle\mathrm dx,\mathrm dy\rangle=\langle x_2-x_1,y_2-y_1\rangle\,\mathrm dt$

with $0\le t\le1$ .

Here, the line integral is

$\displaystyle\int_{\mathcal C}x\,\mathrm dy-y\,\mathrm dx=\int_{\mathcal C}\langle-y,x\rangle\cdot\langle\mathrm dx,\mathrm dy\rangle$
$=\displaystyle\int_{t=0}^{t=1}\langle-y_1-(y_2-y_1)t,x_1+(x_2-x_1)t\rangle\cdot\langle x_2-x_1,y_2-y_1\rangle\,\mathrm dt$
$=\displaystyle\int_{t=0}^{t=1}(x_1y_2-x_2y_1)\,\mathrm dt$
$=(x_1y_2-x_2y_1)\displaystyle\int_{t=0}^{t=1}\,\mathrm dt$
$=x_1y_2-x_2y_1$

as required.

4 0

4 years ago