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butalik [34]
3 years ago
5

PLS HELP :( i’ve been trying to understand this but i cant. please explain this if you know how to do it pleaseee

Mathematics
1 answer:
baherus [9]3 years ago
7 0

Answer:

\huge\boxed{\sf x = 17}

Step-by-step explanation:

Since m is a straight line, its measure is 180 degrees.

So,

2x + 5 + 8x + 5 = 180

2x + 8x + 5 + 5 = 180

10x + 10 = 180

10x = 180 - 10

10x = 170

Divide both sides by 10

x = 17

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3><h3>Peace!</h3>
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Factorise x squared + 4x + 3 ​
olganol [36]
<h3>Answer:  (x+1)(x+3)</h3>

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

Explanation:

Let's assume it factors into (x+a)(x+b)

The goal is to find the two numbers a and b.

FOIL out (x+a)(x+b) to get x^2+(a+b)x+ab

Note how a+b is the middle term and ab is the last term.

In the original expression, 4 is the middle term and 3 is the last term.

So we need to find two numbers that

  • add to 4
  • multiply to 3

There are two ways to multiply to 3 and they are

  • 1 times 3 = 3
  • -1 times -3 = -3

But only the first way has the factors add to 4. So that means a = 1 and b = 3.

Therefore (x+a)(x+b) = (x+1)(x+3)

And x^2+4x+3 = (x+1)(x+3)

8 0
3 years ago
There are 12 boys and 15 girls in my classroom. What is the ratio of girls to total students in the classroom?
Anit [1.1K]

I acidently removed the stuff but anyways the answer is 12:27 or 12 to 27

do 12 + 15 = 27, and so 12 to 27 :)

6 0
3 years ago
Which value of x is a solution to x2<br> = 16?
Helga [31]

Answer:

8

Step-by-step explanation:

if we take the 2 that is in the R.H.S and put it in L.H.S

it becomes 16÷2=8

8 0
3 years ago
What is the solution for this inequality? -7x &lt; -42 what is the answer and is it greater or less then x
Tom [10]
Our given inequality is:
-7x < -42
To solve for the inequality, we need to simplify for x and ensure we've carefully answered the question.
Currently, x is being multiplied by -7.
To get x by itself, we need to perform the opposite of what's being done.
Remember, what you do to one side of an equation/inequality, you must do to the other.

The opposite of multiplying is dividing.
Divide -7x by -7 to get x.

-7x / -7 = x
-42 / -7 = 6 (Dividing a negative by a negative makes a positive, the same goes with multiplying)

You're left with x < 6

When we divide/multiply by a negative, we need to flip the inequality with the opposite value.

Your final inequality is:
x _> 6

I hope this helps you. :)
7 0
2 years ago
Best answer gets BRAINLIEST and 30 pts
Ainat [17]

Answer:

One person ordered chicken, and five people ordered steak.

X=Chicken

Y=Steak

Step-by-step explanation:

X+Y=6

14x + 17y= 99

5 0
3 years ago
Read 2 more answers
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