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3 years ago

Half of the sum of x and 2

Mathematics

2 answers:

natka813 [3]3 years ago

7 0

Answer:

1/2+2x or 1/2+2+x

Step-by-step explanation:

i don't know but this what i think i hope this helps

MArishka [77]3 years ago

7 0

Answer:

see explanation

Step-by-step explanation:

The sum of x and 2 is x + 2 and half this sum is

$\frac{1}{2}$ (x + 2) or

$\frac{x+2}{2}$

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If C is the midpoint of EF, C has coordinate -8, F has coordinate 4, then find the coordinate of E

ycow [4]

<h3>Answer: -20</h3>

==========================================================

Work Shown:

Let x be the location of E on the number line.

Since C is the midpoint of E and F, this means we can find C's location by adding E and F together and dividing that sum by 2

midpoint = (endpoint1 + endpoint2)/2

C = (E+F)/2

Plug in E = x, C = -8 and F = 4. Then solve for x

C = (E+F)/2

-8 = (x+4)/2

(x+4)/2 = -8

x+4 = 2(-8) .... multiplying both sides by 2

x+4 = -16

x = -16-4 .... subtract 4 from both sides

x = -20

The location of point E on the number line is -20

-------------

As a check, lets add E and F to get E+F = -20+4 = -16

Then cut this in half to get -16/2 = -8, which is the proper location of point C

This confirms our answer.

8 0

3 years ago

If a,b, and c are prime numbers, do (a+b)(a+b) and cc have a common factor that is greater than 1?

Tanya [424]

Answer:

1. Information is not sufficient

2. Information is not sufficient

Step-by-step explanation:

Question Modified

If a,b, and c are prime numbers, do (a+b) and c have a common factor that is greater than 1?

(1) a,b, and c are all different prime numbers

(2) c≠2

Explanation

1. Let's assume values of 1,3 and 5 to a, b, and c respectively

a + b = 1+3 = 4

4 and 5 do not have any common factor aside 1

Let's assume values of 1,3 and 2 to a,b and c respectively

a + b = 1+3 = 4

4 and 2 have a common factor of 2

So, the available information is not sufficient

Let's assume values of 2,7 and 3 to a b and c response

a + b = 2 + 7 = 9

9 and 3 have a common factor of 3

Also, let's assume values of 2,7 and 5 to a, b and c

a + b = 2 + 7 = 9

9 and 5 do not have a common factor

So, the available information is also not sufficient to answer the question.

3 0

3 years ago

540 less than the product of 54 and a number is 918

andrew-mc [135]

$54n - 540 = 918\\54n = 1458\\n = 27$

That number is 27.

8 0

3 years ago

Is the radicand in 350 a perfect square

Makovka662 [10]

No. It’s square root is 18.70

7 0

3 years ago

What is the slope of a line perpendicular to a line that contains the points (2,6) and (7, 2)?

balu736 [363]

Answer:

5/4 or 1.25

Step-by-step explanation:

Slope of the line containing (2,6) & (7,2):

m = (y2-y1)/(x2-x1)

m = (2-6)/(7-2)

= -4/5

For Perpendicular lines,

m1×m2 = -1

(-4/5)×m2 = -1

m2 = -1 × (-5/4)

m2 = 5/4 or 1.25

8 0

3 years ago