jaycalmerflint jaycalmerflint

25-08-2016
Mathematics

contestada

there are twice as many Robins has blue jays and their 21 altogether how many blue jays are there

Respuesta :

texaschic101 texaschic101

25-08-2016

r + b = 21
2b = r

now we sub eq 2 into eq 1
r + b = 21
2b + b = 21
3b = 21
b = 21/3
b = 7

2b = r
2(7) = r
14 = r

so there are 7 bluejays (b) and 14 robins (r)...for a total of 21

Answer Link

Otras preguntas

How did American entry into World War I affect the Allied Powers?

I have a senior that comes to my senior citizens center where I work and she doesn’t speak any English. I’ve taught her a few words here and there and learned a

What is the interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

There are 12 boy and13 girls in a class. If the teacher randomly chooses a student’s name out of a hat what is the probability it will be a girl

A grain silo is shown below: Grain silo formed by cylinder with radius 8 feet and height 172 feet and a half sphere on the top What is the volume of grain tha

*Will mark brainliest* Certain species of ______ are now recognized as indicators of environmental pollution. A. Lichen B. Mushroom C. Yeast D. None of the abov

The revenue each season from tickets at the theme park is represented by t(c)=5x. The cost to pay the employees each season is represented by r(x)=(1.5)^x. Exam

When many atoms are split in a chain reaction, a large explosion occurs. This is an example of what type of energy conservation

gerunds, infinitives, and participles are all types of

Which human action has not lead to significant changes in earths biome