The answer to this is A) For 8 birdhouses, he will need 16 trapezoids.
(B = 12*4 is 48 not 16.) (C = A 2 to 1 ratio.) (D = a 1 to 2 ratio.) Hope that helps!
Answer:
2.47× 10^5
Step-by-step explanation:
hope it helps,pls mark me as brainliest
2.3 i think let me know if it works
Hello!
You first make two equations
Let x stand for the price of a burger
Let y stand for the price of fries
3x + 2y = 7.15
4x + 3y = 9.93
multiply the top equation by 3 and the bottom equation by 2
9x + 6y = 21.45
8x + 6y = 19.86
You can subtract the two equations
x = 1.59
Now you can put x into one of the original equations
3(1.59) + 2y = 7.15
Combine like terms
4.77 + 2y = 7.15
Subtract 4.77 from both sides
2y = 2.38
Divide both sides by 2
y = 1.19
The answers are a burger cost $1.59 and Fries cost $1.19
Hope this helps!
Answer:
a) For this case we can see the distribution in the figure attached is a bell shaped graph and symmetrical around 71
b) 
We can see the value of 76 labeled in the second picture attached
c) 
And using the z score we have this using the normal standard table or excel:

d) 
We can say that about 154 and 155 students scored higher than Angelica
Step-by-step explanation:
We know that X represent the random variable scores of knowledge test and is given by:

Part a
For this case we can see the distribution in the figure attached is a bell shaped graph and symmetrical around 71
Part b
For this case the z score is given by:

And replacing we got:

We can see the value of 76 labeled in the second picture attached
Part c
We want this probability:

And using the z score we have this using the normal standard table or excel:

Part d
For this case we can find the number desired like this:

We can say that about 154 and 155 students scored higher than Angelica