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Arada [10]
2 years ago
5

What is x in this problem

Mathematics
2 answers:
o-na [289]2 years ago
6 0

Answer:

total \: angle \: for \: a \: triangle = 180 \\ then \:  \\ 3x + 11 + 9x - 16 + 7x - 5 = 180 \\ 19x - 10 = 180 \\ 19x = 180 + 10 \\ 19x = 190 \\ x =  \frac{190}{19}  = 10 \\ thank \: yo

Charra [1.4K]2 years ago
3 0

Answer:

x=10

Step-by-step explanation:

We know that the sum of all these angles is 180°, so, we solve for x using this information:

(9x-16)+(3x+11)+(7x-5)=180\\19x-10=180\\19x=190\\x=10

We can now use x to find the value of each angle:

9(10)-16=\\90-16\\=74\\\\

3(10)+11\\30+11\\41

7(10)-5\\=70-5\\=65

<em>Hope this helped! Have a good day.</em>

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Layla says that -3(5) = 15. Which statement explains why Layla is correct or incorrect
cestrela7 [59]

Answer:

The answer is suppose to be -15.

Step-by-step explanation:

I do not see any statements

I can give you an explanation

Layla forgot to carry the negative

6 0
3 years ago
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The length of a rectangle is represented by the function L(x) = 5x. The width of that same rectangle is represented by the funct
Mazyrski [523]

Remember that the area of a rectangle is the length of the rectangle multiplied by the width of the rectangle.


In this case, we could say (where A(x) is the area of the rectangle):

A(x) = L(x) \cdot W(x)


Substituting the values the problem gave us for L(x) and W(x), we can find the formula for A in terms of x, which is:

A(x) = (5x) \cdot (2x^2 - 4x + 13) = (10x^3 - 20x^2 + 65x)


The formula for the area of the rectangle would be A(x) = 10x³ - 20x² + 65x.

3 0
3 years ago
Read 2 more answers
What is Perimeter of triangle ABC?
belka [17]
Considering they are congruent
if 7x-19=2x+11
how much is 6x-8

7x-19=2x+11
7x=2x+30
7x-2x=30
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X=6

6x-8=
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therefore
BC= 28
2x+11
(2*6)+11
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hope you found this helpful, brainliest if possible please
5 0
3 years ago
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A scientist needs to make 2 liters of saline solution (salt water), in which the salt
gulaghasi [49]

Answer:

1.60 L of 10% solution

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Step-by-step explanation:

If x = amount of 10% saline solution, and y = amount of 35% saline solution, then:

x + y = 2

0.10x + 0.35y = 0.15(2)

Solve with substitution:

0.10x + 0.35(2 − x) = 0.15(2)

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5 0
3 years ago
Jack wants to know how many families in his small neighborhood of 60 homes would help organize a neighborhood fund-raising party
seraphim [82]

hello,


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Yes, this is a valid inference because the 30 families speak for the whole neighborhood


it's the correct one because if he ask 30 families so they talk to their neighborhood so its will be 60 ;) so its correct,


hope this help


7 0
3 years ago
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