Answer:
∠1 = 72°
∠2 = 54°
∠3 = 54°
∠4 = 72°
Step-by-step explanation:
In the isosceles triangle in which ∠4 is the top vertex angle and ∠3 & 54° are it's base angles. As it is an isosceles triangle , ∠3 = 54°
Using angle sum property of a triangle ,
∠4 + ∠3 + 54° = 180°
⇒ ∠4 + 54°+ 54° = 180°
⇒ ∠4 = 180° - 108° = 72°
Diagonals of a rhombus bisect the vertex angles of a rhombus. So,
∠2 = ∠3 = 54°
Also , opposite vertex angles of a rhombus are equal, So , ∠1 = ∠4 = 72°
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given:
= cost of Brazilian coffee in mixture
= cost of Venezuelan coffee in mixture
= cost of mixture
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Now I can rite these equations:
(1)
(2)
Multiply both sides of (2) by and
subtract from (1)
(1)
(2)
and, since
288 kg of Brazilian coffee and 96 kg of Venezuelan coffee are needed
Answer:
Wednesday
Step-by-step explanation:
Fridays temperature was -4
We want a temperature that is 9 degrees lower
-4 -9 = -13
Wednesday has a temperature of -13
Answer:
40%
Step-by-step explanation:
To convert the fraction 2/5 to a percentage, multiply it by 100%:
(2/5)×100% = 40%
Jana colored 40% of the paper red.
Answer:
<em>4/6 = 6/9</em>
Step-by-step explanation:
Because 4/6 = 2/3 and 6/9 = 2/3