Answer:
5 cm
Step-by-step explanation:
We khow that the altitude of this triangle is 1cm shorter than the base
- Let H be our altitude and B our base and A the area of the triangle
- A= (B*H)/2 ⇒ 15=(B*H)/2
- H is 1cm shorter than B ⇒ B=H+1
- H*(H+1)/2=15 ⇒ H*(H+1)=30⇒ H²+H=30⇒H²+H-30+0
that's a quadratic equation . Let's calculate the dicriminant .
Let Δ be the dicriminant
- a=1
- b=1
- c= -30
- Δ=b²-4*a*c = 1²-4*1*(-30)=1+4*30=121≥0
- Δ≥0⇔ that we have two solutions x and y
- x= (-1-
)/2= (-1-11)/2= -6 - y= (-1+)/2= 10/2 = 5
We have a negative value and a positive one
The altitude is a distance so it can't be negative
H= 5cm
75÷500 = 0.15 multiply with a hundred to get percentage equals 15℅
Although you didn't provide any answer choices:
A trinomial is an expression with exactly three terms that can't be combined an example would be this
x^2 - 3x + 1
None of those terms can be combined
x^2 + 3 - 4 has three terms but it isn't considered a trinomial because you can simplify it to x^2 - 1 which is known as a binomial because it has 2 terms in it's simplified form.
hope this helps C:
Answer:
Step-by-step explanation:
To do this, you must substitute 
for x in the equation g(x)
Simplified this would be
Hello Lexi!
<u><em>Answer: ⇒⇒⇒⇒⇒⇒ 
</em></u>
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Step-by-step explanation:
First you had to divide by 2 from both sides of equation.
Simplify.
Divide by the numbers.
Apply the fraction rule.
Then you divide by the number.
Add by 4 from both sides of equation.
Simplify it should be the correct answer.
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Hope this helps!
Thank you for posting your question at here on brainly.
Have a great day!
-Charlie
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