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horrorfan [7]
3 years ago
6

Lara takes 40 minutes to drive 20 miles north and then 20 miles south to end up at the same place. Calculate average speed and a

verage velocity
Mathematics
1 answer:
DiKsa [7]3 years ago
4 0

Answer:

30.mph

Step-by-step explanation:

20/20=1 40/20=2. 2 minutes for every mile 2 X 30=60 (60 minutes) 1 X 30=30 (30 miles)

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The sum of two integers is 121. The larger integer is 7 more than twice the smaller integer. Find the two integers.
iren [92.7K]
X + (2x + 7) = 121 : Write the expression.
3x + 7 = 121 : Combine like terms.
3x + 7 - 7 = 121 - 7 : Isolate x.
3x = 114 : Combined like terms.
3x / 3 = 114 / 3 : Find the value of x.
x = 38 : This is the smaller integer.
(2x + 7) = (2(38) + 7) = 76 + 7 = 83. : Find the value of the larger number by plugging in the value of x to the larger number's quantity.
The larger number is 83, and the smaller number is 38.
5 0
3 years ago
A store sells a certain digital camera model for $108. During a special promotion, the camera is discounted by 30%. What is the
Pavel [41]

Answer:

discount=108$-$32.4=75.6

3 0
3 years ago
The top of a square box has an area of 121 cm2. What is the length of one side of the box? A) 9.0 cm B) 11.0 cm C) 15.125 cm D)
tekilochka [14]
B. 11.0 cm, since the area of a square is x^2. 11.0 x 11.0 is 121. So that means one of the sides is 11.0
5 0
3 years ago
Read 2 more answers
yesterday 50 bakery customers muffins and 11 of those customers bought bran muffins if 150 customers buy muffin's tomorrow how m
Andrews [41]

Answer:

33 banana muffins

Step-by-step explanation:

11/50 = x/150

50x=1650

50x/50=1650/50

x=33 !

8 0
3 years ago
David has a bag of coins. The bag contains 7 dimes, 2 nickels, and 6 pennies. He will randomly select 2 coins from the bag one a
luda_lava [24]

Answer:

7/15 for dime

6/15 for pennies

Step-by-step explanation:

7/15 because 7+2+6=15 and there are 7 dimes so 7/15.

6/15 because there are 15 coins and there are 6 pennies so 6/15.

15 is the total so 7 and 6 have to go over it.

5 0
3 years ago
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