Answer:
x=19.4
Step-by-step explanation:
a^2+b^2=c^2
x^2+8^2=21^2
x^2+64=441
x^2=377
square root of 377 is 19.41648784
rounded would be 19.4
3.75 each, 6 friends, $20. 6 multiplied by 3.75 is 18.75. you can buy 5 sandwiches
Answer:
138 packs
Step-by-step explanation:
Marcello thinks it better to have more water balloons on hand that he actually needs fo the water balloon fight, so he rounds up the number of balloons needed to 276 from 275.
Then he divides 276 by 2, obtaining 138. He needs to buy 138 packets of balloons. This way, he will have acquired the required 275 balloons plus 1 left over.
Answer: 3 times 4 times 3
Step-by-step explanation:
Half of 1=1/2=0.5
plus 500
500+0.5=500.5
divide by 2
500.5/2=250.25
