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s344n2d4d5 [400]
2 years ago
13

I dont even care if its wrong atp, I JUST NEED ANSWERS

Mathematics
1 answer:
salantis [7]2 years ago
6 0

Answer:

Here ,

2x-30° +70° +x-10° = 180° ( sum of triangle is 180°)

3x+30 =180°

3x=150°

x=50°

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Polynomial add or subtract (-2x^2-4x+13)+(12x^2+2x-25)
BigorU [14]

1.Simplify.

-2{x}^{2}-4x+13+12{x}^{2}+2x-25−2x2−4x+13+12x2+2x−25

2.Collect like terms.

(-2{x}^{2}+12{x}^{2})+(-4x+2x)+(13-25)(−2x2+12x2)+(−4x+2x)+(13−25)

3.Simplify.

10{x}^{2}-2x-1210x2−2x−12

6 0
2 years ago
What are the solutions to the expression 4x2+11x−3
lina2011 [118]

Step-by-step explanation:

4x² + 11x - 3 = 0

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6 0
2 years ago
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The radioactive isotope radium has a half-life of 1,600 years. The mass of a 100-gram sample of radium will be______ grams after
Olenka [21]
To solve this we are going to use the half life equation N(t)=N_{0} e^{( \frac{-0.693t}{t _{1/2} }) }
Where:
N_{0} is the initial sample
t is the time in years
t_{1/2} is the half life of the substance
N(t) is the remainder quantity after t years 

From the problem we know that:
N_{0} =100
t=200
t_{1/2} =1600

Lets replace those values in our equation to find N(t):
N(200) =100e^{( \frac{(-0.693)(200)}{1600}) }
N(200)=100e^{( \frac{-138.6}{1600} )}
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8 0
3 years ago
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vivado [14]
-3a=-3-2b
a=1+2/3b

Solution
a=1+2/3b
7 0
2 years ago
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Andreyy89
75-2(9-5)^2+2^3

First, solve the parentheses:

75-2(4)^2+2^3

Next, the exponential terms

75-2(16)+8

Solve the multiplication:

75-32+8

Add and subtract:

51

5 0
1 year ago
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