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 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

Which sentence best connects the two ideas? The park benches need a new coat of paint, so we should volunteer to paint them. The park benches need a new coat of
In economies like the united states, how is individuals freedom tied to economic freedom?
Identify the parent function that can be used to graph the function f(x)= -2x+2
The equation for the circle is: x2+y2+14x+10y−7=0 . What is the center of the circle? Enter your answer in the boxes.
Which algebraic expression represent the verbal expression "5 less than a number"? n-5 n+5 5n 5-n
What does Money managers do?
For f(x)=4x+2 and g(x)=x^2-6, find (f+g)(x) A) 4x^3-4 B) 4x^2-16 C) x^2+4x-4 D) x^2+4x+8
Need help ASAP !!!! 10 PTS Which element will you include to present numerical data visually on a slide? A. graph B. text C. flowchart D. shapes
Can someone please help me for this question? I don’t understand why my answer are wrong. Please someone explain to me step by step.
PLEASE HELP WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!! The cost​ C, in​ dollars, of renting a moving truck for a day is given by the function Upper C left pare