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erik [133]
3 years ago
7

Which matrix is equal to C-B?

Mathematics
1 answer:
kherson [118]3 years ago
6 0
7. -20
10 3
6 3

Subtract each remember 4-- -6= 10
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I WILL AWARD BRAINLIEST!! PLEASE HELP!!
Anastasy [175]

Answer:

m∠EBC=65° 15' and AC=20in

Step-by-step explanation:

Given:

AB≅BC

AE=10in\\m\angle FEC=90\\m\angle ABC=130\°30'

From the given Data, we can conclude the following:

1. Since two sides of the triangle ABC are congruent, therefore its an isosceles triangle.

2. m\angle FEC=90°. This shows that the line BE is perpendicular to AC. By property of isosceles triangle, the line which passes from the vertex of the largest angle of triangle and cuts the opposite side(base) perpendicularly is the perpendicular bisector of the side and angle bisector of the angle.

∴  m\angle EBA\ ≅m\angle EBC    [ Definition of Angle bisector]

m\angle ABC=130\°30'

m\angle EBC=\frac{m\angle ABC}{2}=\frac{130\°30'}{2}=65\°15'

m\angle EBC=65\°15'

∴AE=EC       [ Definition of perpendicular bisector]

AE=EC=10in

AC=AE+EC

AC=10+10=20in

AC=20in

7 0
3 years ago
In this diagram is AB parallel to ED? <br> Explain
alisha [4.7K]

AB is not parallel to ED because if it were, it would have little arrows to indicate it. Also the measure of angle A is not 60 degrees it would be 140 degrees since angle B and C are 20.

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Admission to a county fair is $4.50 per person. The Rodriguez family pays $22.50 for admission to the fair. Which equation can y
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5 people

Step-by-step explanation:

22.50 ÷ 4.50 = 5

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