Answer:
a)- the first one, as 490 is farther than 420.
b)-underestimate
Answer:
A) FOR FIRST QUESQUESTION
B) FOR SECOND
Step-by-step explanation:
What's Ali's average speed on her walk to school if she walks halfway at 2mph and runs the rest of the way at 7mph?
Answer:
s = 28/9
Step-by-step explanation:
d/(7 x 2) + d/(2 x 2) = d/s
d/14 + d/4 = d/s
18d/56 = d/s
18/56 = 1/s
s = 28/9
The average speed is 28/9.
What is Average speed?Average speed is the mean value of the speed of a body over a period of time. The formula for average speed is needed since the speed of a moving body is not constant and varies across a period of time. Even with varying speed, the values of total time and the total distance covered can be used, and with the help of the formula for average speed, we can find a single value to represent the entire motion.
Example
Using the average speed formula, find the average speed of Sam, who covers the first 200 kilometers in 4 hours and the next 160 kilometers in another 4 hours.
To find the average speed we need the total distance and the total time.
Total distance covered by Sam = 200Km + 160 km = 360 km
Total time taken by Sam = 4 hour + 4 hour = 8 hour
Average Speed = Total distance covered ÷ Total time taken
Average Speed = 360 ÷ 8 = 45km/hr
The average speed of a body is equal to the total distance covered, divided by the total time taken. The formula for average speed is given as:
Average Speed Formula:
Average Speed = Total distance covered ÷ Total time taken
Given:
halfway at 2mph and runs the rest of the way at 7mph
d/(7 x 2) + d/(2 x 2) = d/s
d/14 + d/4 = d/s
18d/56 = d/s
18/56 = 1/s
s = 28/9 mph
Learn more about average speed here:
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A machine produces wooden blocks at a constant rate. At the end of 6 minutes, it produced 48 blocks. Which table represents the relationship between the number of minutes the machine produces wooden blocks and the number of blocks produced?
Answer:
I thinks its c prob not but i mean who know
Step-by-step explanation:
Answer:
D.
Step-by-step explanation:
It sounds like the machine produced eight blocks per minute and the other charts aren't showing the consistent flow you're looking for.
SOMEONE PLEASE HELP!! I NEED RN
Answer:
It's either B or D. I'm leaning towards B since there is a cluster near the point (3,5)
An empty container in the shape of a cube 6 inches deep is filled with plastic cubes.
How many plastic cubes measuring 1 inch across each face will it take to fill the container?
What is the division expression that is the same as 1/5 * 1/4 ?
A. 1/5 divide by 2
B. 1/5 divide by 3
C. 1/5 divide by 4
D. 1/5 divide by 5
Answer:
C. 1/5 divide by 4
Step-by-step explanation:
When you divide two fractions, you multiply the first fraction by the reciprocal of the other one. To find the reciprocal of the second fraction, yo just have to switch the value of the numerator and denominator (i.e. 4/1's reciprocal is 1/4).
Another important thing to note is that 1/5 x 1/4 is 1/20 because you multiply straight across numerators and denominators.
Now that we have some back ground information, let's which expression leads to 1/20!
A:
1/5 x 2/11/5 x 1/21/10Incorrect Answer ChoiceB:
1/5 x 3/11/5 x 1/31/15Incorrect Answer ChoiceC:
1/5 x 4/11/5 x 1/41/20Correct Answer Choice!Therefore, the answer is C. 1/5 divide by 4.
Writing expressions word problems
5 stars for correct answers
have a great day byeeee
Answer:
p - 4
Step-by-step explanation:
Since there are 48 paintings being donated by 12 collectors, then we can say that each collector will donate 4 paintings.
This means Sergio has 4 less paintings than before which was represented by p. So, our expression is p - 4.
Drag the tiles to the correct boxes to complete the pairs. Match the subtraction expressions to their solutions. arrowBoth arrowBoth arrowBoth arrowBoth
-96 2/9 - 24 4/9 49.40 - (-85.63) -52.89 - ( -25.63)
-18 1/5 - (-2 3/50
heres the correct answer
Equivalent expressions: negative numbers & distribution
5 stars for correct answers
Have a wonderful day and never forget to love yourself :)
Answer:
C) None of the above
When you simplify -6+4q+(-6q), you'll end up with -2q-6, which isn't present between the two choices.
-6(q+1)-4q = -10q-6, so that can't be the answer
2(q-3) = 2q - 6. But the 2q isn't negative, so therefore, this isn't the answer either
Therefore, the answer is C: None of the above
Hope this helped!
Describe in detail how you would create a number line with the following points: 3, 2.25, the opposite of 4, and – (–1fraction of one-half). Please be sure to describe on which tick marks each point is plotted and how many tick marks are between each integer.
PLEASE HELP!!!!!
Answer: Given : points 4 , 1 ,25 , opposite of 3 , -1/2To Find : draw on Number Line Solution :Numbers with a negative sign are less than zeroRight of zero represented by ‘+’ sign and to the left of zero represented by ‘–’ sign.+ sign numbers can be denoted as simply numbers On a number line the number increases as we move to the right and decreases as we move to the left. 1 : Draw a line and mark some points at equal distance on it as shown in the figure below Mark a point as zero on it. Points to the right of zero are positive integers and are marked simply 1, 2, 3 and so on , while points to the left of zero are negative integers and are marked – 1, – 2, – 3 and so on 2. Go 4 unit on right sides from Zero to show 43. Go 3 units on Left from zero to show opposite of 3 4. Divide number line between 1 & 2 in 4 Equal parts and go 1 part right of 15. Divide number line between 0 & -1 in 2 Equal parts and go 1 part left of 0
Step-by-step explanation:
help please :DDDDDDDDD
Answer:
1/10
Step-by-step explanation:
Ok so 1/100= 10/100
I will give brainliest
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Coordinates system is a method for plotting coordinates on a plane or flat surface.
The green is y and the pink is x.
Answer:
Coordinates system is a method for plotting coordinates on a plane or flat surface.
Step-by-step explanation:
The green is y and the pink is x. I hope I helped!!
PLEASE HELP QUICK MATH
Answer:
66.7%
Step-by-step explanation: