jadenmp35 jadenmp35

17-03-2021
Mathematics

contestada

On a piano, the ratio of black keys to white keys is 9 to 13, if there are 88 keys on a piano how many are black?

Respuesta :

22wangjo 22wangjo

17-03-2021

Answer:

36 black keys

Step-by-step explanation:

9(88-x)=13x

792-9x=13x

792=22x

x=36

Hope this helps: )

Answer Link

Otras preguntas

maintain any two possible human can get infected by bird flu

Hey can someone help with this problem!?

Which choice best describes a reason a writer uses commentary? bc To provide explanation and analysis of evidence To organize paragraphs by when events happened

Fill in the blank with the correct corresponding indirect object pronoun: 8. _____ quiero escibir la carta a mi mejor amiga. 9. Yo ____________ compro una bicic

The customer service department for a wholesale electronics outlet claims 90% of all customer complaints are resolved to the satisfaction of the customer. In or

Why can't we meet all of our protein needs in one meal?

The altitude a (in feet) of a plane t minutes after liftoff is given by a = 3400t + 600. How many minutes after liftoff is the plane at an altitude of 21,000 fe

35. A by-product obtained from the manufacture of soap is A. Glycerol B. Nylon C. Polythene D. Vegetable Oil

age 12 of 14A couple has three children. The table shows some of the characteristics of thechildren.ChildSickle Cell/NormalSexBlood group1Sickle cellMaleBNormal

solve for x on the diagram below