Answer:
-4.54 and 1.54
Step-by-step explanation:
This is a quadratic equation
Let Δ be our discriminant :
- a= 1
- b= 3
- c= -7
- Δ = 3²-4*1*(-7)= 37≥0
so we have two solutions : x and y
x =( -3-
)/2 = -4.54
y= ( -3+)/2= 1.541
then the solutions are -4.54 and 1.54
Answer:
D
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
The area of a rectangle is given by the formula:
So, we are given that the area is:
And the width is:
And we want to find the length. To do so, first substitute the expressions into the equation:
Thus, to find the length, divide by (x²+3):
So, factor the numerator:
From the first two terms, factor out a x^2.
From the third and fourth terms, factor out a 3:
Combine:
Putting this back:
Cancel:
And that's our answer :)
I believe it would be D.
ΔBAC ≅ ΔDAC by ASA congruency
Step-by-step explanation:
Congruency of any triangle can be proved by either of these four criteria. These include
SSS, SAS, ASA, AAS where S= sides and A= Angles
In the given figure ΔBAC & ΔDAC
Since the line, AC is a common angular bisector of ∠BAC and ∠DAC
∴ ∠BAC = ∠DAC ∵ AC is an angular bisector and bisects the ∠BAD into two halves
∠BCA=∠DCA ∵AC is an angular bisector and bisects the ∠DCB into two halves
AC=AC ∵Common side
∴ ΔBAC ≅ ΔDAC ⇒by Angle-Side-Angle (ASA) congruency criterion
Answer:
she made 36 lol
Step-by-step explanation:
90 divided by 2.5 =36
<em>HAVE A NICE NIGHT!!!!! :))</em>
