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Debora [2.8K]
2 years ago
5

How to do the discriminant and the quadratic formula?

Mathematics
1 answer:
aivan3 [116]2 years ago
8 0

Answer:

Quadratic formula (see image)

Step-by-step explanation:

Discriminant: b^2-4ac

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The vertex angle of an isosceles triangle measures 42°. A base angle in the triangle has a measure given by
Dmitry_Shevchenko [17]

Answer:

x=33

Each base angle measures 69 degrees

Step-by-step explanation:

the 2  base angles are equal so  the measure of 1 base angle = (180 - 42) / 2

=  69 degrees

2x + 3 = 69

2x = 66

x = 33

5 0
3 years ago
a gas company in massachusetts charges $1.30 for 16.7 ft3 of natural gas. convert this rate to dollars per liter of gas
Katyanochek1 [597]

By using a change of units, we can see that the rate in dollars per liter is:

R = $0.0027 per liter.

<h3>How to convert the rate?</h3>

Here we have a rate in dollars per cubic foot, and we want to rewrite this in dollars per liter. So we just need to apply a change of units.

The original rate is in dollars per square foot, and it is given by:

R = $1.30 for 16.7ft^3

We know that the relation between cubic feet and liters is:

1ft^3 = 28.32 L

Then, if we apply a change of units, we can rewrite the volume as:

16.7ft^3 = 16.7*(28.32) L = 472.9 L

Then the rate is $1.30 per 472.9 L, taking the quotient we get:

R = ($1.30/472.9 L) = $0.0027 per liter.

If you want to learn more about changes of units:

brainly.com/question/9032119

#SPJ1

5 0
2 years ago
Step by step PLEASE!!!
blondinia [14]
F(x) = 3x^2+6x-2

= 3(x^2+2x-2/3)
= 3(x^2 +2x + 1 - 1 - 2/3)
= 3((x+1)^2 - 1 - 2/3)
= 3((x+1)^2 -5/3))
= 3(x+1)^2 - 5

So our function is in the form:

f(x) = 3(x+1)^2 - 5
where a = 3, h = -1, k = -5
7 0
3 years ago
Help please asap thx
Lelechka [254]

Answer:

2 and a half, but it wants it as a mixed fraction which would be 5/2

Step-by-step explanation:

i hope this helped :)

7 0
3 years ago
Read 2 more answers
Help me what to write a word phrase for each algebraic expression. Please help.
andrezito [222]
#1:  The sum of q and 5 
#2:  Twelve times x

Please do as many as you can by yourself and ask questions about those that are hard for you.  

3 0
2 years ago
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