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sertanlavr [38]
2 years ago
15

Hiii please help i’ll give brainliest if you give a correct answer tysm!

Mathematics
1 answer:
taurus [48]2 years ago
8 0
20 people






Reason - following the sequence
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What's X?<br><img src="https://tex.z-dn.net/?f=%20-%203x%20-%2010%20%3D%205" id="TexFormula1" title=" - 3x - 10 = 5" alt=" - 3x
Dmitry [639]

-3x - 10 =5

-3x = 15

x = -5


2x + 6 = -8

2x = -14

x = -7


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2 years ago
Question 5
Jobisdone [24]

Answer:just tryna get points don't mind me

Step-by-step explanation:

....

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3 years ago
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Write an equation for the description <br><br> a number x increased by 16 is 118.
noname [10]

Answer:

x +16 = 118

Step-by-step explanation:

A number(unknown ) = x

Increased = +

Merge all together you  have

x + 16 = 118

Tip ; If you solve the equation you will get 102 as an answer. 102 +16 =118 .

SO the equation is correct .☻

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3 years ago
If you hike 1/2 mile every 1/5 hour how far do you hike in two hours?
Anarel [89]

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5 miles

Step-by-step explanation:

0.5 x 10

= 5

4 0
3 years ago
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to start to solve the system of equations below, which number would you multiply in the equation -2x-5y=-1? The two equations ar
Leviafan [203]

Answer:

  The first equation can be multiplied by 2.

Step-by-step explanation:

The x-coefficients are -2 and 4. If the first one of these is multiplied by 2, it will be the opposite of the second of these. That is 2·(-2) = -4. When -4 and 4 are added, the result is 0, so the x-variable will be eliminated.

To solve these equations by "elimination", you look for simple relationships between the coefficients that will let you combine them to get zero.

_____

Here's the rest of the solution.

  2(-2x-5y) +(4x+2y) = 2(-1) +(8) . . . . after multiplying the first equation by 2 and adding the second equation

  -4x -10y +4x +2y = -2 +8 . . . . . the result of eliminating parentheses

  -8y = 6 . . . . . the result of collecting terms

  y = -6/8 = -3/4 . . . . divide by the y-coefficient

Since all of the coefficients in the second equation are even, a factor of 2 can be removed, and the equation written as ...

   2x +y = 4

This can be solved for x, so you have ...

  x = (4 -y)/2 = 2 -(y/2)

Filling in the above value of y, we find x to be ...

  x = 2 -(-3/4)/2

  x = 2 3/8

_____

<em>Comment on eliminating y instead of x</em>

If you divide the second equation by 2 so that y has a coefficient of 1, then you can multiply this equation by 5 to give y a coefficient that is the opposite of the coefficient -5 in the first equation. Then the elimination looks like

  (-2x -5y) +5(2x +y) = (-1) +5(4)

  -2x -5y +10x +5y = -1 +20 . . . . eliminate parentheses

  8x = 19 . . . . simplify

  x = 19/8 = 2 3/8 . . . . divide by the coefficient of x

5 0
3 years ago
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