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hichkok12 [17]
3 years ago
7

Calculate X you must include the steps in your solution and the definitions and/or conjuncture that you use

Mathematics
2 answers:
Ira Lisetskai [31]3 years ago
6 0

Answer: x = 8

because  The upper triangle is an isosceles triangle (the two sides are equal)

=> 5x + 5 = 45°

<=> x = (45 - 5) : 5

<=> x = 40:5 = 8

Step-by-step explanation:

Free_Kalibri [48]3 years ago
3 0

Answer:

x = 8

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

Sum the 3 given angles and equate to 180

5x + 5 + 5x + 5 + 90 = 180, that is

10x + 100 = 180 ( subtract 100 from both sides )

10x = 80 ( divide both sides by 10 )

x = 8

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liraira [26]
The ratios should be,
11. no, it's not a constant trend.
12, 1;2
13, The ratio should be multiplying by 10.
I'm not sure about 13
6 0
3 years ago
The quick computing company discovered that it costs 45$ to produce 2 calculators, 143$ to produce 4 calculators,and 869$ to pro
telo118 [61]
<span>Using the points (2, 45) (4, 143) and (10, 869), we can plug them into the following system of 3 equations using the y = ax^2 + bx + c format:

45 = a(2)^2 + b(2) + c
143 = a(4)^2 + b(4) + c
869 = a(10)^2 + b(10) + c

which simplifies to:

45 = 4a + 2b + c
143 = 16a + 4b + c
869 = 100a + 10b + c

Solving the system, we get a = 9, b = -5, and c = 19. Thus the equation is:

c(x) = 9x^2 - 5x + 19

If you have a TI graphing calculator, you can also enter the points by pressing Stat -> Edit and enter (2, 45) (4, 143) and (10, 869) into it. Go back and calculate the QuadReg of the points from the Calc tab and it will give you the same answer.

Now that we know the function that will produce the price of production for any number of calculators, plug in x = 7 and it will give you the price to produce 7 calculators.

c(x) = 9x^2 - 5x + 19
==> c(7) = 9(7)^2 - 5(7) + 19
==> c(7) = 441 - 35 + 19
==> c(7) = 425

Therefore, it costs $425 to produce 7 calculators.

Hope this helps.

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6 0
3 years ago
An atom has a charge of +1. If the atom's nucleus contains 23 protons, the atom must have
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4 0
3 years ago
Read 2 more answers
What is the first term in a geometric sequence if the common ratio is −4 and the sum of the first four terms is −255?
posledela
Sn=A1(1-r^n)/(1-r)
Sum of a finite geometric series formula
We know the sum, number of terms and rate, so you plug those in.
-255=A1(1-(-4)^4))/(1-(-4)
-255=A1(1-256)/5
-255=A1(-255)/5
-1275=A1(-255)
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Hope this helped! Let me know if you have any questions.
8 0
2 years ago
I WILL GIVE BRAINLIEST. What is the justification for each step in solving the inequality?
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Heres all of them including the finished one.. just in case
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8 0
3 years ago
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