josiahsylvers236 josiahsylvers236

24-01-2020
Mathematics

contestada

3.
"a varies directly with b". If a = 4 when b = 21, find a when b-7.

Respuesta :

mosunmolaajagbe mosunmolaajagbe

27-01-2020

Step-by-step explanation:

A(promotional sign)b

A=kb

4=21k

K=0. 1904

A=0. 2b

A=0. 2×7

A=1. 4

Answer Link

josshyaby josshyaby

27-01-2020

:

Step-by-step explanation:

a varies directly with b

a ∞ b

a = Kb

K is the constant of proportionality

If a = 4 when b = 21

4 = 21×k

4 = 21k

k = 4/21

: - a = 4b/21

find a when b= 7.

a = 4(7)/21

a = 4/3

a = 1 1/3

Answer Link

Otras preguntas

Write 0.006966 in scientific notation.

The volcanoes of northeastern California — Lassen Peak, Mount Shasta, and Medicine Lake volcano — along with the rest of the Cascade Mountains of the Pacific No

Can someone answer this

liability (noun) quality of being bound or obligated according to law Which sentence uses liability in a way that matches this definition? The island is unoccu

The surface area of Earth is about 196.9 million square miles. The land area is about 57.5 million square miles and the rest is water. What is the probability t

What other theme is addressed in the passage? injuries are a stumbling block to maintaining good health. considering life from a new point of view is enlighteni

Project: create a multimedia presentation i need topic ideas for social/global studies. if you help then thank you very much

Forms are composed of multiple, shifting planes. True or False

brain break riddle! what has a head and a tail, but no legs?

* Is this a metaphor? The ice cream was a rock when I took it out of the freezer. Yes Or no