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ValentinkaMS [17]
3 years ago
7

-2(5×+8)=14+6× solve for x​

Mathematics
2 answers:
Margarita [4]3 years ago
7 0

Answer:

-2 ( 5x + 8 ) = 14 + 6x

-10x - 16 = 14 + 6x

<u>-6x            -6x</u>

-16x - 16 = 14

<u>       +16  +16</u>

<u>-16x = 30</u>

     -16

x = -1.875

Step-by-step explanation:

  1. distribute the brackets by -2
  2. subtract 6x from both sides
  3. add 16 to both sides
  4. divide by -16 to get x

Harrizon [31]3 years ago
4 0

Exact form:

-15/8

Decimal form:

-1.875

Mixed number form:

-1 7/8

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I have a big test coming up and i nedd help with this question please :)
svetoff [14.1K]

Answer:

the answer is 7/10

Step-by-step explanation:

5 0
2 years ago
The measure of an angle is fifty-nine times the measure of a supplementary angle. What is the measure of each angle?
vaieri [72.5K]
So
supplementary angles are adding up to 180
lets say they are x and y
x+y=180

x is 59 times y
x=59y
subsitute

59y+y=180
add
60y=180
divide 60
y=3
subsitute
x=59y
x=59(3)
x=177

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3 0
3 years ago
Which expressions are greater than 12.5? (Select all that apply)
Hatshy [7]
C is the only one greater than 12.5 i think so 
also b and d
7 0
3 years ago
Read 2 more answers
Simplify 4x + 8-5x +3a +4x-9e
disa [49]

Answer:

3x+3a-9e+8

Step-by-step explanation:

(4x+4x-5x)+3a-9e+8

8x-5x+3a-9e+8

3x+3a-9e+8

8 0
3 years ago
Could someone explain this to me ??
hodyreva [135]
<h3>Answer: C) 12</h3>

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

Explanation:

Refer to the diagram below. I'm using the points A,B,C,D,E to help label the triangles, and to label the angles as well.

For now, let's focus on triangle DEC.

The top most angle is given as D = 65. Note how the angles D and E are opposite the congruent lines (marked with the red single tickmarks). This means that angles D and E are congruent to one another. So E = 65 as well. This is shown in the diagram below.

For now we don't know what angle C is, so we'll call it y. More specifically, we'll make y the measure of angle DCE.

For any triangle, the three angles always add to 180

y+65+65 = 180

y+130 = 180

y = 180-130

y = 50

So angle DCE is 50 degrees.

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

Now we move onto triangle ABC.

Because angles DCE and ACB are vertical angles, this makes angle ACB 50 degrees also. Effectively, anywhere you see a 'y' in the diagram below, replace it with 50.

So triangle ABC has the three angles y = 50, y = 50 and 7x-4

We can solve for x like so

y+y+(7x-4) = 180

50+50+(7x-4) = 180

7x+96 = 180

7x = 180-96

7x = 84

x = 84/7

x = 12

This points to choice C as the final answer.

3 0
3 years ago
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