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goldenfox [79]
2 years ago
13

Find the value of x.

Mathematics
2 answers:
Genrish500 [490]2 years ago
8 0

Answer:

11

Step-by-step explanation:

All angles on a triangle equal 180. 80+60=140.

Now to solve for x, we set it to equal 40 for 180-140.

40=3x+7. 40-7=33

33=3x 33/3=11

x=11

vfiekz [6]2 years ago
6 0
Every triangle has to add up to 180 degrees. So if you already have 140 degrees, that’s what the 3x+7 has to add up to.

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What’s the system of y=x-4 and y=4x-10?
Natasha_Volkova [10]

Answer:

That is the system.

y = x - 4

y = 4x - 10

If you are looking for the solution then use the method of substitution or the method of elimination.

4 0
3 years ago
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Which of the following is the third value for the data set below
Tcecarenko [31]

Answer:

Step-by-step explanation:

Ur mom

8 0
3 years ago
(10 POINTS AND BRAINLIEST FOR BEST)
Naddik [55]

Answer:

C. II only

Step-by-step explanation:

Basically all you need do is plug these answers in and if the complete the inequality to make a true statement.

Yes i know no body want to do that but that whats need to be done lol.

once i plug 7 12/7+8 = 12.83

12.83>20

is incorrect

so we need continue

7*2.5+8>20

7*2.5= 17.5

17.5+8= 25.5

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this a true statement

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6 0
3 years ago
You should be able to find this
Nastasia [14]

Answer:

\frac{1}{2}

Step-by-step explanation:

sin(cos^{-1} \frac{\sqrt{3} }{2} )

using the sides of the 30- 60- 90 triangle

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3 0
1 year ago
12x15y=4140; x+y= ? <br> solve.
Semenov [28]

Answer: The number of $12 tickets and $15 sold are 120 and 180 respectively.

Step-by-step explanation:

The given equation is:

12x + 15y = 4140             .....(1)

Where,

x stands for $12 tickets and y stands for $15 tickets

According to the question:

x + y = 300           ....(2)

Now solving equation 1 and 2.

From equation 2:

x = 300 - y

Now putting this expression in equation 1.

12x + 15y = 4140

12(300 - y) + 15y = 4140

3600 - 12y + 15y = 4140

3600 + 3y = 4140

3y = 4140 - 3600

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y = 180

And,

x = 300 - y = 300 - 180 = 120

The number of $12 tickets sold = x = 120

The number of $15 tickets sold = y = 180

Thus, the number of $12 tickets and $15 sold are 120 and 180 respectively.

4 0
3 years ago
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