Answer: 7
Step-by-step explanation: Cross multiply, so 15 times x and 21 times 5. 21 times 5 is 105 then you divide by 15 which gives you 7.
Answer:1,750,000,000
Step-by-step explanation:first the number ten to the fifth power is 1,000,000 then times five is 5,000,000. Then the number ten to the negative fifth power is 50 times seven is 350. 5,000,000 times 350 is 1,750,000,000
Cos x = 15÷17
because cos is adjacent side over hypotenuse.
Answer:
1/20
Step-by-step explanation:
if you do all kids there is 20. you have a 1 out of 20 people change so plz give brainest answer