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DIA [1.3K]
3 years ago
14

I don't really understand, please help!!

Mathematics
2 answers:
aivan3 [116]3 years ago
7 0

Step-by-step explanation:

In Triangle ICU,

Angle 2 = 180° - Angle 1 (Angles on a straight line)

CR = CU - RU

In Triangle ISR,

Angle 3 = 180° - Angle 4(Angles on a straight line)

SU = RS - RU

Angle 1 = Angle 4

Therefore, Angle 2 is equal to Angle 3

CU = RS

Therefore, CR is equal to SU

Triangle ICR and Triangle ISU

IC = IS

Angle 2 = Angle 3

CR = SU

Therefore, Triangle ICR and Triangle ISU are congruent (SAS congruency).

As the two triangles are congruent, Angle CIR = Angle SIU

miv72 [106K]3 years ago
4 0

Step-by-step explanation:

the proof is given above

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ololo11 [35]

In ΔABC, D and E are the midpoints of AB and AC respectively. We know that the ratio of areas of two similar triangles is equal to the ratio of square of their corresponding sides. Hence, the ratio of the areas ΔADE and ΔABC is ar(ΔADE) : ar(ΔABC) = 1 : 4.

3 0
3 years ago
When simplified, 4x/7y + 3x/5y is written as?​
Yanka [14]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
Here are the equations of 4 straight lines. Two of these lines are parallel what are the two parallel lines? A) y=2x+4. B) 2y=x+
Alchen [17]
Put ur equations in y = mx + b form and compare the slopes(m) and the y intercepts (b). Parallel lines will have the same slope but different y intercepts.

A) y = 2x + 4....slope is 2, y int is 4
B) 2y = x + 4
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D) 2x - y = 4
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6 0
3 years ago
"what is the unit rate for vanilla to sugar if a recipe calls for 2 teaspoons of vanilla and 3/4 cup of sugar"
horsena [70]
Ok for every 1 teaspoon of vanillia u and 1/3 cup and 2 teaspoons of sugar

i think this is right???
6 0
3 years ago
olivia purchased a car worth $18,000 in the year 2001. it loses its value by 6% per year. what is the value of the car in 2004
Tomtit [17]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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