Mathematics Middle School

Three months ago, Santos could walk
2 miles in 40 minutes. Today he can walk
2 miles in 25 minutes.

Answers

Answer 1

Answer: 62.5% change

Step-by-step explanation:

First, since you want to find the percentage change, you need to do this:

Percentage change = actual change/original amount x 100

So, 25/40 ÷ 100 = 62.5

Answer 2
62.5% change is the answer

Related Questions

help me, please ehtu6itiiiiiii

Answers

Answer: its ab and fe

Step-by-step explanation:

Answer:Ab and Fe
Hope this helps

A truck driver drove 150 miles in 3 hours. At that rate, how long will it take the drive to travel 500 miles?

I’m bad at math and confused. Help?

Answers

Answer:   10 hours

=====================================================

Explanation:

We'll use the values in the first sentence to find the rate or speed.

distance = rate*time

rate = distance/time

rate = (150 miles)/(3 hours)

rate = 50 miles per hour

Now we can determine the time needed to travel 500 miles

distance = rate*time

time = distance/rate

time = (500 miles)/(50 mph)

time = 10 hours

Answer: 10 hours

Step-by-step explanation:

    We can set up a proportion to solve. Let x be equal to the number of hours it takes to drive 500 miles.

[tex]\displaystyle \frac{150\;miles}{3\;hours} =\frac{500\;miles}{x\;hours}[/tex]

    Now, we will cross-multiply.

150 * x = 500 * 3

150x = 1,500

    Lastly, we will divide both sides of the equation by 150 to isolate the variable

x = 10 hours

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I could use some help on my homework please. Don't really understand and would like the steps in solving

Answers

x= -29+2y/4

-4(-29+2y/4)+2y=-16

+116-8y/4 +2y=-18

The system has no solutions.
1. 4x=-29+2y
-4x+2y=-16 (rearrange this equation to find 2y)

2. 2y=-16+4x (rearranged equation)
Plug the rearranged equation into the first one.

3. 4x=-29+(-16+4x) (new equation)
Now solve for X

4. Once you solve the equation you’ll find 0=-45 which means there’s no solution

What is the value of negative 8 divided by 5?

A. −0.4
B. −1.6
C. 0.4
D. 1.6

Answers

-1.6 is the correct answer
the answer you’re looking for -1.6 correct :)

It would be much appreciated if you could answer this!

Answers

Answer: y=1/2x+3

Step-by-step explanation: 1/2 will be your slope with a y-intercept of +3 following the slope-intercept form of y=mx+b

^What they said^ have a good day

HHHHHHHHHHHEEEEEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLPPPPPPPPPP
25 POINTS AND BRAINLIEST
Directions: Evaluate and solve for the variable and graph the resulting solution set, showing ALL work.

a) x/4 > 10

b) -5g < 15


c) t - 4 ≤ -3


d) 4d > -12


e) u + 12 ≤ 5


f) j - 4 ≥ - 4

Answers

Answer:

a) x/4 > 10

x > 10*4

x > 40

--------------------------
b)-5g < 15

g > 15/-5

g > -3

--------------------------

c) t - 4 ≤ -3

t ≤ -3 + 4

t ≤ 1

--------------------------

d)4d > -12

d > -12/4

d > -3

--------------------------

e)u + 12 ≤ 5

u ≤ 5 -12

u ≤ -7

-------------------------
f)j - 4 ≥ - 4

j ≥ -4 + 4

j ≥ 0

Answer:a) x/4 > 10

x > 10*4

x > 40

--------------------------

b)-5g < 15

g > 15/-5

g > -3

--------------------------

c) t - 4 ≤ -3

t ≤ -3 + 4

t ≤ 1

--------------------------

d)4d > -12

d > -12/4

d > -3

--------------------------

e)u + 12 ≤ 5

u ≤ 5 -12

u ≤ -7

-------------------------

f)j - 4 ≥ - 4

j ≥ -4 + 4

j ≥ 0

Step-by-step explanation:

-5 < -3
-3 < -1 Complete each statement.
−3 is located to the ____ of −5 on a number line.
−1 is located to the _____ of −3 on a number line.

A. left
B. right

Answers

Answer:

-3 is located to the right of -5 on a number line

-1 is located to the right of -3 on a number line

-3 is located to the right of -5 on the number line.
-1 is located to the right of -3 on the number line.

Explanation: -3 is less greater than -5 so it is closer to 0
Same with -1

A local hamburger shop sold a combined total of 512 hamburgers and cheeseburgers on Saturday. There were 62 more cheeseburgers sold than hamburgers. How many hamburgers were sold on Saturday?

Answers

Number of hamburgers sold on Saturday is 225

Finding Unknown quantity using Linear equation

To find an unknown quantity, first make a linear equation according to the relation given in the problem and solve obtained equations for the required quantity.

Here we have,

Total number of hamburgers and cheeseburgers sold on Saturday = 512

The Number of cheeseburgers is 62 more than that of hamburgers  

Let x and y be the number of cheeseburgers and hamburgers

As we know number of cheeseburgers is 62 more than that of hamburgers  

=> x = y + 62 —-(1)

And total number of burgers sold = 512

=> x + y = 512 —-(2)

Substitute (1) in (2)

=> y + 62 + y= 512

=> 2y = 512 - 62

=> 2y = 450

=>  y = 450/2

=>  y = 225  

Number of hamburgers sold on Saturday is 225

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1,079 hamburgers sold

The Lopez family at Fuzy's Tacos. The total bill was $64. They left a tip that was 15% of the bill. How much was the tip?

Answers

Answer:

$9.60

Step-by-step explanation:

To find the tip, you have to multiply it by the total bill. 15% turns into 0.15, and if you multiply that to 64, you get $9.60

Hope this helps!

Answer:

the person who answerd in front is right i did math and it did come up to $9.60

Step-by-step explanation:

Please answer this question asap!! due soon

Answers

Answer:

Range

Step-by-step explanation:

By finding the mean (average) of the ages, it doesn't really describe the ages. The range of the boys is 10-14, and describes how old they are much better than saying that the average age of boys is 12.

The range of their ages should be used. Using the range gives more details on their ages than finding the average of all the ages does.

MATCH THE ITEMS ASAP PLEASEEE

1 .
GCF
a number to be multiplied
2 .
prime number
5
3 .
composite number
6
4 .
LCM
greatest common factor
5 .
factor
least common multiple

Answers

Answer:

Step-by-step explanation:

GFC - greatest common factor

LCM - least common multiple

Prime number - 5

Composite number - 6

Factor - a number to be multiplied

Please give brainliest if I'm correct :]

really appreciate it lol

GCF is greatest common factor. LCF is least common answer. A number to be multiplied is a factor. A prime number’s only factors are one and itself (you can only divide it by one or itself to get a whole number). A composite number has more than two factors (one and itself). For example 7 is prime because you can only divide it by one and seven to get a whole number. On the other hand, 8 is composite because it can be divided by 8, 1, 4, and 2.

Estimate by rounding to the nearest whole number.
5.7 + 11.8 + 0.08
--------------------------------------------------------------------------------------
A: 19
B: 17.9
C: 18
D: 26.0
D:

Answers

Answer: C

Step-by-step explanation:

5.7+11.8=17.5+0.08=17.58=.   18

Answer: 18

Step-by-step explanation: If you add all 3 numbers, you will get 17.58

Now to round it to the nearest whole numbers, look at the 2 whole numbers nearest to it. 17 or 18. Anything .49 or lower will round down. Anything .50 or higher will round up. So if it was 17.49 it would round round to 17. This is 17.58 so it will round up to 18.

Can someone please help?

Answers

answers are in the picture

goodluck :)

1. Do the product rule:
Since the base of both numbers are the same, keep the base. In this case, it’s 2. Next add the exponents together. 3 + 2 = 5.
So the simplified one would be 2^5 (two to the fifth power)

2. Multiply 2 by itself five times; 2 • 2 • 2 • 2 • 2 = 64
So evaluated (calculated) the answer would be 64.

Ruben and Claire are training to run a marathon in the spring. Ruben runs 16 miles over a 4-day period. Claire runs 12 miles over a 3-day period. Are they running at the same rate of speed? Respond "1" for yes or "2" for no.

Answers

1, yes

It would be that because if Ruben runs 16 miles over a 4-day period, it would mean that he ran 4 miles a day (16/4). And if Claire runs 12 miles over a 3-day period, it would mean that she also ran 4 mi per day (12/3)

Answer:

Yes, 1

Step-by-step explanation:

16/4=4

12/3=4

They both ran 4 mph each day.

please help ASAP. any help would be heavily appreciated!

Answers

Answer:

Your answer would be 10/18 or in the simplist form 5/9

Answer:Your answer would be 10/18 or in the simplist form 5/9

Step-by-step explanation:

Determine which integer will make the inequality 18 > 3x + 9 true.

S:{−3}
S:{3}
S:{9}
S:{14}

Answers

Answer: -3

Step-by-step explanation:

X < 3

So the answer is: S{3}

Andy and Nick went to the amusement park. They each bought a sandwich, and Nick got a small drink. Andy had a $10 gift certificate to put toward the cost, and Nick paid the rest, which came to $44.50. A ticket costs $20.00, and a sandwich costs $6.50. How much does a drink cost at the amusement park?

Answers

Answer:

$1.25

Step-by-step explanation:

To do this problem, you need to note that they bought two of almost everything. You are also working backwards at first to get how much they spent total and then taking away the expenses.

The first step is finding how much money they spent total, and you can do this by adding the gift certificate to the price:

44.5 + 10 = $55.50

Now, you see that they each bought a ticket for $20 EACH. There were two tickets (one for Andy, one for Nick). So multiply 20 by 2 and subtract that from your total cost.

$55.50 - (2 * $20) =

$55.50 - $40 =

$15.5

They bought a total of TWO sandwiches at 6.50 each. So repeat these steps, subtracting from the number above (underlined)

$15.50 - ($6.50 * 2) =

$15.50 - $13 =

$2.5

They bought two drinks that totaled to be $2.50.

To find the cost of ONE drink, divide this number by 2:
$2.50/2 =

$1.25

Answer:

A drink costs $1.5 at the amusement park

Step-by-step explanation:

44.50 + 10 = 54.5

2 people         1 ticket = $20             1 sandwich = $6.5

20 × 2 = 40

6.5 × 2 = 13

40 + 13 = 53

54.5 - 53 =  1.5

Use the Distributive Property to solve the equation 25−(3x+5)=2(x+8)+x.

Answers

As we use the distributive property, we’ll get the answer X = 2/3

Answer:

x = 2/3 or x = 0.666...

Step-by-step explanation:

First distribute -1 into 3x and positive 5. giving you -3x - 5. on the opposite side distribute 2 x and 8, giving you 2x+ 16. now Combine Like Terms. on the left side combine 25 and -5. on the right side combine 2x and x. the equation should look like this now 20 -3x = 3x + 16. now solve for x. to do that add 3x to both sides to remove -3x on the left side. now subtract 16 from both sides. giving you 4=6x. divide by six and x =2/3 or x= 0.666.....

I need this answer ASAP, please!! Thanks!!

Answers

Answer:

The slope is 3

Step-by-step explanation:

Because I say so

Answer: Your answer is 6

Step-by-step explanation:

Debra needs to memorize words on a vocabulary list for Russian class. She has 14 words to memorize, and she is one-half done. How many words has Debra memorized so far?

Answers

Answer: it states that She has 14 words to memorize she had done 1/2 of all of it so that would leave 7 words left to do

Step-by-step explanation:

It states she has 15

HELP ME ON THIS ASAP PLEASE

Answers

answer

1 .  3 x 3 x 3 x 3

2 . 18 to the power of 4 (put the 4 above the 18)

3. 3 x 3 x 3 x 3

4. four cubed

1. 3 x 3 x 3 x 3
this is because it is to the power of 4 so you multiply 3 to itself 4 times (different than 3 x 4)

2. 18^4
because the 4th power is the exponent

3. 3 x 3 x 3 x 3
similar to question 1, this is called expanded form

4. four cubed
cubed is used to explain when 3 is the exponent, 2 as a exponent is squared

A group of students go out on a boat to go scuba diving. The instructor takes the group 49.61 feet below the surface to start. Then they go up 24.92 feet and stop to see some fish. Estimate the total change in distance from where they started at the surface. Find the total change in distance from where they started at the surface. Round to the nearest 10.
please help 20 points

Answers

Answer:  25 rounded feet

Step-by-step explanation

-49.61 + 24.92 = -24.69.

Rounded is 25

Answer:  25 feet
i hope this helps :)

Just need help on this.

Answers

Answer:

start answer goes to: 4/9, then 0.78, then -1/8, then -2.1, then -1 2/3, then -1.82, then -3 1/2, then -1.728, finally 14.44

The price of a DVD is $24.00 plus 8% sales tax. What is the sales tax on this DVD in dollars and cents?

Answers

Answer:

1.92$

Step-by-step explanation:

8% of 24 is 1.92 dollars so therefore the answer is 1.92

What the person said about me

What is (3 x 10 cubed) / (12 x 10 to the power of 6) ?

Answers

Answer: (3 x 10 cubed)= 3000 (12 x 10^6)=12000000

Step-by-step explanation:

Answer:

It would be 2.5*10 to the negative fourth power. When you put in the calculator.

Step-by-step explanation:

The population of a city increases by 0.7% per year. What should we multiply the current population by to find the next year's population in one step?

Answers

Answer:

12

Step-by-step expla

Find the next 3 numbers in the sequence: 2, 9, 11, 18, 20, 27

Answers

Answer:

the numbers are 7,, and 2

Step-by-step explanation:

2 plus 7 equals 9 plus 2 equals eleven so the pattern is plus then plus 2

Answer: next 3 numbers are 34,41,48

there is a difference of 7 between each number

blackpink in ur area ayo any who I need help

Answers

13:19
You just turn it into mixed numbers, multiply the denominator by the whole number and add the numerator, then see if it can be reduced
13:19 u gots this fam.

The following angles are supplementary to each other.

m∠A = (3x + 21)° and m∠B = (6x − 21)°

Determine x.

10
20
36
60

Answers

Answer: X=20

Step-by-step explanation: Supplementary angles, by definition, add up to 180.

(3x + 21) + (6x - 21) = 180

3x + 6x + 21 - 21 = 180

9x = 180

9x/9 = 180/9

x = 20

x = 20 . Option B is correct.

What are supplementary angles?

Two angles are supplementary to each other if their sum is equal to 180°.

Given,

          ∠A = (3x + 21)°

And  ∠B = (6x − 21)°

Also, ∠A and ∠B are supplementary angles.

Therefore,    ∠A + ∠B = 180°

           (3x + 21)° + (6x − 21)° = 180°

                (9x + 0)° = 180°

Hence, x = 20.

To learn more about supplementary angles visit:\

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#SPJ1

I need help please show your work

Answers

Pauli's pizzeria- y=15x = slope m=$15 per pizza sold
Leo's pizzeria-y=12x = slope m=$12 per pizza sold
$15 per pizza sold is more than $12 per pizza sold
So Pauli's makes more money per pizza than Leo

Answer: Pauli's pizzeria- y=15x = slope m=$15 per pizza sold

Leo's pizzeria-y=12x = slope m=$12 per pizza sold

$15 per pizza sold is more than $12 per pizza sold

So Pauli's makes more money per pizza than Leo

Step-by-step explanation: I thank that is right

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