Spencer took $21 with him to the mall. At the music store he spent 2/3 of his money on a DVD. He spent 1/4 of what he had left on a drink. How much money did Spencer have left after he bought the drink?

Answers

Answer 1

Answer: the answer is $ 5.25 to your question because 2/3's of 21 is 7 so 1/4 of 7 is 1.75 so the answer is 5.25

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Daniela rented a snowboard for $35 then took lessons that cost $7 per hour .if her total cost to rent a snowboard and take lessons was $73.50, how many hours of lessons did she take ?

Answers

Answer:

5.5 or 51/2 hours

Step-by-step explanation:

get 73.50 and subtract it with 35. you would then get 38.5 then you divide by 7.

Answer:

5.5hrs

Step-by-step explanation:

35 + 35 = 70 (5 hrs) half of 7 is 3.5

70 + 3.5 = 73.50

So Daniela took 5 and a half hours of lessons

A climber is on a hike.after 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is the average rate of change?

Answers

Answer:

75 feet per hour is the rate of change in altitude.

Step-by-step explanation:

A climber is on a hike. After 2 hours he is at an altitude of 400 feet.

After 6 hours, he is at an altitude of 400 feet.

We have to determine the average rate of change in altitude.

We know rate of change in altitude = $\frac{\text{(Change in altitude)}}{\text{Change in time}}$

= $(700-400)/(6-2)$

= $(300)/(4)$

= 75 feet per hour

Therefore, 75 feet per hour is the rate of change in altitude.

Average rate of change =
(change in height during some time) / (length of time for the change).

Change in height = (700 feet - 400 feet) = 300 feet

Time for the change = (6 hours - 2 hours) = 4 hours

Average rate of change = (300 feet) / (4 hours) = 75 feet per hour

Which two numbers have a difference of 5 and a product of 3.36???

Answers

x - y = 5

x.y = 3.36

$(x-y)^2=5^2$

$x^(2) -2xy + y^(2) =25$

$x^(2) + y^(2)=25+6.72=31,72$

$(x+y)^2= x^(2) +2xy+ y^(2) =31,72 + 6,72 = 38,44$

$√((x+y)^2)= √(38,44)$

x+y= 6,2
and we know that x - y= 5

x+y+x-y=6,2 + 5
2x=11,2
x=5,6

so then y=0,6

Answer:

x= 5,6
y= 0,6

Answer:

25 i believe

Step-by-step explanation:

A machine packs boxes at a constant rate of 2/3 of a box every 1/2 mintue. What is the number of boxes per minutes that the machine packs?

Answers

you either have to use unit rate or complex fractions

write the following as an algebraic expression then simplify the sum of two consecutive even integers of the first integer is x

Answers

If the first of two consecutive even integers is x, then the second is two more than that, or x+2. Their sum is
x + (x+2)
In simplified form this is
2x+2

Final answer:

The algebraic expression for the sum of two consecutive even integers, where the first integer is x, is x+(x+2). This simplifies to 2x+2.

Explanation:

To express the sum of two consecutive even integers algebraically, where the first integer is x, it's important to understand that consecutive even integers increase by 2. Therefore, if x is your first even integer, the next consecutive even integer would be x+2.

To find their sum, you would simply add the two together, as follows: x+(x+2).

To simplify, combine like terms. The two 'x' terms add together to make '2x', and you're left with the '+2'. So, the simplified expression for the sum of two consecutive even integers where the first is x is 2x+2.

Learn more about Algebraic Expression here:

brainly.com/question/34192827

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There are 15 rows of diamond rings in a case in the jewelry store. There are 24 rings in each row. Another case has 12 rows of rings with a variety of colored stones and has 18 rings in each row.How many more diamond rings than rings with colored stones are in the jewelry store?

Answers

in jewelry store we have 15 rows and each has 24 rings so in total we have :
15 * 24 = 360 rings and in another case we have 12 rows and each has 18 rings so in total we have : 12 * 18 = 216 so jewelry store has (360 - 216) rings more than other case so jewelry store has 144 rings more than other case :)))
i hope this is helpful
have a nice day

15 rows* (24 diamond rings/ 1 row)= 360 diamond rings.

12 rows* (18 rings with colored stones/ 1 row)= 216 rings with colored stones.

Note that the units cancel out so you get the answer.

360 rings- 216 rings= 144 rings.

There are 144 more diamond rings than rings with colored stones in the jewelry store~

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TICKETS:All you can ride: $257 tickets for $5a. Write an equation in slope intercept form for the total cost of any number of tickets at 7 tickets for $5.b. Write an equation in slope intercept form for the total cost of wristband for all you can ride.