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Alina [70]
2 years ago
13

C + 25 - 19 = 100 uggghh

Mathematics
2 answers:
larisa86 [58]2 years ago
6 0

Answer:

c=6

Step-by-step explanation:

c+25-19=100

isolate variable...

c+25-19+19=100+19

c+25=119

c+25-25=119-25

c=6

cluponka [151]2 years ago
3 0

Answer:

94

Step-by-step explanation:

First, we can subtract 19 from 25 on the left:

25 - 19 = 6,

which leaves us with c + 6 = 100.

Subtract 6 from both sides so that c is isolated, so c = 94.

I hope this was helpful! ^^

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jekas [21]

Answer:

x =60 ° angles on a straight line

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4 0
2 years ago
Use the quadratic function f(x) = 2x^2 + 4x - 15. Find any x intercepts.
8_murik_8 [283]

So for this function we will be using the quadratic formula, which is x=\frac{-b+\sqrt{b^2-4ac}}{2a},\frac{-b-\sqrt{b^2-4ac}}{2a} , to solve. a = x^2 coefficient, b = x coefficient, and c = constant. Using our equation, we can solve for the zeros (x-intercepts) as such:

x=\frac{-4+\sqrt{4^2-4*2*(-15)}}{2*2},\frac{-4-\sqrt{4^2-4*2*(-15)}}{2*2}\\ \\ x=\frac{-4+\sqrt{16-(-120)}}{4},\frac{-4-\sqrt{16-(-120)}}{4}\\ \\ x=\frac{-4+\sqrt{136}}{4},\frac{-4-\sqrt{136}}{4}\\ \\ x=1.92,-3.92

In short, your x-intercepts (rounded to the hundredths) are (1.92,0) and (-3.92,0).

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3 years ago
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