2 years ago

Any answers I need help

Mathematics

2 answers:

natulia [17]2 years ago

6 0

Answer:

(A) 21

Step-by-step explanation:

5x-15 needs to equal 90 since it is a right angle and 21 makes that true

$(5*21)=105\\105-15=90$

Luba_88 [7]2 years ago

3 0

Step-by-step explanation:

A+B=180

(9×+15)×(3×-15)=180

12×=180

×=180\12

×=15 ans,,

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