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blsea [12.9K]
3 years ago
10

Solve for x 15x+5x 14x-6

Mathematics
1 answer:
ValentinkaMS [17]3 years ago
8 0

Look at the picture.

[tex\alpha+\beta=180^o[/tex] - supplementary angles

Therefore we hve the equation:

(14x-6)+(15+5x)=180\\\\(14x+5x)+(-6+15)=180\\\\19x+9=180\qquad\text{subtract 9 from both sides}\\\\19x=171\qquad\text{divide both sides by 19}\\\\\boxed{x=9}

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I need help with number 12
fomenos
Ok so when the divisor get larger, the quotient gets smaller. 
For example, 15 ÷ 3 = 5. If we make the divisor larger, you can see the quotient get smaller. 15 ÷ 5 = 3.
The same thing goes for the other way around. If the divisor gets smaller, the quotient gets larger. Hope I helped!
7 0
3 years ago
A field is a rectangle with a perimeter of 960 feet. The length is 100 feet more than the width. Find the width and length of th
marta [7]
To start, let x represent the width and x+100 represent the length.

Since the perimeter of a figure is the sum of all the measurements of the side which can be represented by (x+100)+(x+100)+x+x and since you know your perimeter is 960 feet, you can set the expression equal to 960. This would look like this:
(x+100)+(x+100)+x+x=960

Once you have done that, combine any like terms (combine terms with the same variables and raised to the same power together) which would simplify to this:
4x+200=960

Now that you have your like terms simplified, subtract 200 from both sides to get 4x=760 and finally, to solve for x, or find the width, divide both sides by 4 to get x=190.

Now that you have your width, now you must find your length as the question asks to find the dimensions of the rectangular field. To find the length, add 100 to the width of (190) since according to the information given, the length is 100 more than the width. When you add 100 to 190, you should get that your length is 290.

Now that you have your length and width, you can conclude that the dimensions of the field is 190 by 290 feet, which is your answer :)
4 0
2 years ago
*5) x—&gt; 1 — x<br><br> Help please will really appreciate it
Paha777 [63]
Hey I’m sorry but I do not know the answer.
3 0
3 years ago
X / x-2 + x-1 / x+1 = -1 <br><br> Im really confused, please show all steps
Yakvenalex [24]
I cant access paper right now so i can only give the answer

x= 0,1 
3 0
3 years ago
A high school student has started a new job. He plans to save $1 the first week, $2 the second week, $4 the third week, and $8 t
Mama L [17]
If you already know that you have . . . 

1$ after week 1
2$ after week 2
4$ after week 3
8$ after week 4

 . . . You can then tell that every week the money you save doubles (times 2) 

So to continue . . . . 
16$ after week 5
32$ after week 6
64$ after week 7
128$ after week 8
256$ after week  9
512$ after week 10 

You will then know that after ten weeks u will have 512$ which is answer choice D. 

Hope this helps! :)

3 0
3 years ago
Read 2 more answers
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