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2 years ago

Simplify x+4/2 - x-5/7

Mathematics

2 answers:

Alona [7]2 years ago

6 0

Answer:

Step-by-step explanation:

You want to remove the denominatior so multiply both fractions by a common multiple of the denominator

14(x+4/2) - 14(x-5/7)

Simplify

14x+28 - 14x+10

Combine common variables

14x-14x+28+10

Done!

strojnjashka [21]2 years ago

4 0

Answer:

(5 - x)/7 + (x + 4)/2

not rly a simlification but it changes it?

Hope This Helps!!!

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The formula P = 6s gives the formula for the perimeter of a regular hexagon with side length s. What is the perimeter of a regul

masya89 [10]

The answer is letter D, 20.4.
3.4(6)=20.4

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2 years ago

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The mean value of 8 numbers is 17. Three of these numbers (9, 11, and 20) are discarded.

Viktor [21]

Answer:

19.2

Step-by-step explanation:

You get the mean of a set of numbers by adding them and dividing the sum by how many numbers there are. In this case, you don't know what the individual 8 numbers are, but you can find out what they add up to.

Mean = (sum) / 8

17 = (sum) / 8

17 x 8 = sum

136 = sum

Now take out the numbers 9, 11, 20, which reduces the sum by 40. There are 5 numbers left and they add up to 136 - 40 = 96.

The new mean is 96 / 5 = 19.2

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3 years ago

Reflect the figure over the line x = 2 x=2.

inessss [21]

2 = 2????

Thats what Im getting it from.

Since x is 2 then it would still be 2=2 in simple term.

7 0

2 years ago

What's -5x – 10 = 10

Nikitich [7]

-5x-10=10 x= -4

Work:
-5x-10=10
+10 +10
______________
-5x=20
_______
-5 -5

x=-4

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2 years ago

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HELP ME solve for the right triangle

VikaD [51]

Answer:

see explanation

Step-by-step explanation:

Using the cosine and tangent ratios in the right triangle

cos41° = $\frac{adjacent}{hypotenuse}$ = $\frac{VW}{VX}$ = $\frac{7}{VX}$

Multiply both sides by VX

VX × cos41° = 7 ( divide both sides by cos41° )

VX = $\frac{7}{cos41}$ ≈ 9.3

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

tan41° = $\frac{opposite}{adjacent}$ = $\frac{WX}{VW}$ = $\frac{WX}{7}$

Multiply both sides by 7

7 × tan41° = WX, thus

WX ≈ 6.1

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

The sum of the 3 angles in a triangle = 180°

Subtract the sum of the given angles from 180° for ∠ X

∠ X = 180° - (90 + 41)° = 180° - 131° = 49°

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2 years ago