Y= 150
Start by using substitution.
Change x+y=375 to x=375-y
Substitute this into 1.25x+0.75y=393.75
1.25(375-y)+0.75y=393.75
Distribute the 1.25
468.75-1.25y+0.75=393.75
Add like terms (y)
468.75-0.5y=393.75
Subtract 468.75 to the right
-0.5y=-75
Divide by -0.5
y=150
Answer:
Step-by-step explanation:
The roots are very clear on the graph. I have left them unlabeled so that you can put the two points in.
The points are (-4,0) and (-2,0)
The graph was done on desmos which you can look up. The box in the upper left corner was filled with
y = x^2 + 6x + 8
C^2=a^2+b^2
a=x
c=9
b=7
9^2=x^2+7^2
81=x^2+49
x^2=81-49
x^2=32
x= √32
x= 5.65685424949
The question is wrongly placed under Mathematics which supposedly be under Biology. It talks about genetics. The answer for the question is letter D. There are 4 phenotypes, A, B, O, AB.
<h3>Angles. Triangle angles.</h3>
The sum of angles of a triangle equals 180°.
Therefore:
|∠EAB| + |∠ABE| + |∠BEA| = 180°
Susbtitute
|∠EAB| = 14°
|∠ABE| = 45°
|∠BEA| = x°
14° + 45° + x° = 180°
59° + x° = 180° |<em>subtract 59° from both sides</em>
<h3>x° = 121°</h3>
∠BEA and ∠CED are vertical angles. Vertical angles are congruent, meaning that they have the same angle measure.
Therefore
<h3>|∠CED| = 121°</h3>
In ΔCDE:
|∠CED| + |∠DCE| + |∠EDC| = 180°
Substitute:
|∠CED| =121°
|∠DCE| = 27°
|∠EDC| = y°
121° + 27° + y° = 180°
148° + y° = 180° |<em>subtract 148° from both sides</em>
<h3>y° = 32°</h3>
<h2>|∠EDC| = 32°</h2>