10 bagels and 4 muffins cost 13 dollars and 5 bagels and 8 muffins costs 4 dollars How much do the bagels cost and how much do the muffins cost?

Please help

The cost of bagel is $0.8 and that of muffins is $1.25.

Step-by-step explanation:

Let the bagels cost is x and muffins cost is y.

ATQ,

10x+4y=13 (1)

5x+8y=14 (2)   (it should be 14 instead of 4)

Multiply equation (1) by 2 such that,

20x+8y=26 ...(3)

Now subtract equation (2) and (3).

5x+8y-(20x+8y)=14-26

5x+8y-20x-8y=-12

-15x = -12

x  = $0.8

Put the value of x in equation (1)

10(0.8)+4y=13

8+4y=13

4y = 13-8

4y=5

y = $1.25

So, the cost of bagel is $0.8 and that of muffins is $1.25.

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92