I think that she should bring three packs. 6 hours=360 minutes. 360/45=8. 345x8=2760. 2760/3=920 and 310x3=930. :)
Yes, because $45 is 60% of $75. So with $80 she has more than enough for the bike.
Let x equal a number
3x + 5 = 26
3x = 21
x = 7
the number is 7!
Answer:
D. Randomly draw and replace a card 100 times. Then, observe how close to 20 times a club is drawn.
Step-by-step explanation:
We are given that,
Martha predicts that 'whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time'.
Now, according to the options, we see that,
If she randomly draw and replace a card 100 times and then observe how close to 20 times a club is drawn.
Her prediction is most likely to be true.
As, 20 out of 100 times is th of the total time.
Hence, option D is correct.
Step-by-step explanation:
solution,
given
DF = 42
DE = 7x+1
EF = 4x-3
DE = ?
here,
or, DF = DE +EF
or, 42 = 7x+1+4x-3
or, 42 = 11x-2
or, 42+2 = 11x
or, 44/11 = x
or, 4 = x
then,
replacing value of x in DE
DE = 7x+1
= 7*4+1
= 28+1
= 29