a car travels 100 kilometers east in 2 hours and 30 kilometers north in a half an hour. what is the average speed of the car?
Answers
Total distance=100+30=130k.m
Total time =2+1/2 hour=2.5 hours
Average speed =130/2.5=1300/25=52 km/h
Related Questions
what is 2(x - 3) + 3y = 0 solve for y :D
Answers
Answer:
2x+3y=5
Step-by-step explanation:
Answer:
y-intercept: (0,0)
Please mark brainiest :)
FIRST ANSWER=BRAINLIEST ANSWER :))
Answers
35^2 + b^2 = 37^2
1225 + b^2 = 1406
b^2 = 144
b = 12
12 + 4 = 16
Help me with this please im not sure how i passed my last test-
I am not the brightest with fractions
Answers
Answer:
-2/3n + 7 = 15
-2/3n = 15 + 7
-2/3n = 22
n = 2/3 + 22
n = 24/3
n = 8
-2/3n + 7 = 15
Good luck on your test :D
what value of x makes this equation true -(x+3)=2(x-3)
A. 0
B. 1
C. 2
D. 3
Answers
Answer:
To solve the equation -(x + 3) = 2(x - 3) for x, we can follow these steps:
Step 1: Distribute the negative sign on the left side of the equation:
-(x + 3) = 2(x - 3)
=> -x - 3 = 2(x - 3) (using the distributive property)
Step 2: Expand the right side of the equation:
-x - 3 = 2x - 6
Step 3: Add x to both sides of the equation to isolate the x term on one side:
-x + x - 3 = 2x + x - 6
=> -3 = 3x - 6
Step 4: Add 6 to both sides of the equation:
-3 + 6 = 3x - 6 + 6
=> 3 = 3x
Step 5: Divide both sides of the equation by 3 to solve for x:
3/3 = 3x/3
=> 1 = x
So, the correct value of x that makes the equation true is B. 1.
PLEASE MARK BRAILYISTT :D
Answer:
B, one
Step-by-step explanation:
In order to solve this, you can solve the equation. First, you can use the distributive property to get -x-3=2x-6. If you make the variables on one side and the constants on the other, you will get -3x-3=-6. This can further simplify to -3x=-6. Divide both sides by -3 to get that x=1. Then, the correct answer is B.
Tom and Katherine live in different towns which are linked by a bike trail. They agree to meet for a bike ride, and both set off from home at the same time. Tom rides north at a speed of 14 mph and Katherine rides south at 10 mph. The bike trail between their homes is 42 miles long. How long will it be before they meet?
Answers
Answer:
We can start by using the formula:
time = distance / speed
Let t be the time (in hours) for Tom and Katherine to meet.
Tom's distance = Tom's speed x time = 14t
Katherine's distance = Katherine's speed x time = 10t
Since they are riding towards each other, the total distance they cover is the sum of their distances:
Tom's distance + Katherine's distance = 42 miles
14t + 10t = 42
Simplifying:
24t = 42
t = 42 / 24
t = 1.75 hours
Therefore, Tom and Katherine will meet after 1.75 hours of riding.
.308 / .35 =
equals what
Answers
Answer:
0.88
Step-by-step explanation:
Answer:
0.308 / 0.35 = 0.88
I hope this helps :D
Solve for y.
−2y+7=−5
Responses
y = 6
y = 1
y = -1
y = -6
Answers
Answer: y = 6
Step-by-step explanation:
1. Subtract 7 from both sides to isolate -2y.
-2y = -12
2. Divide both sides by -2 to isolate the y.
y = 6
subtract -3 3/8 - 7/8 enter your answer in simplest form in the box
Answers
Mrs. Wickowitz purchased at leat 4 dozen muffins to give to her students. write an inequality to represent the amount of dozen of muffins, m, that Mrs. Wickowits purchased.
A) m < 8
B) m > 4
C) m > 3
D) m < 12
Answers
m >= 4
This inequality states that the value of m (the number of dozen muffins) must be greater than or equal to 4.
Therefore, the correct answer is B) m > 4.
Joanna draws a scale model of a rectangular table for a carpenter to build.
On her drawing, 3/4 of an inch represents 1 foot. In the drawing, the table is 7 1/2 inches long. How long, in feet, will the table be when the carpenter builds it?
A. 4 2/3 ft
B. 2 5/8 ft
C. 5 5/8 ft
D. 10 ft
Answers
Answer:
D
Step-by-step explanation:
just multiply the three over four inches with seven and a half to get the accurate measurements
55 POINTS NEED ANSWER BEFORE CLASS ENDS
Answers
Answer:64 5/9
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
Which number is divisible by 5 and 10?
Answers
A person on a moving sidewalk travels 36 feet in 6 seconds. The moving sidewalk has a length of 180 feet. How long will it take to move from one end to the other?
Help pls?
Answers
Answer:
30 seconds
Step-by-step explanation:
Answer:
It would take 30 seconds.
Step-by-step explanation:
Per second, you would travel 6 feet. Dividing 180 by 6 gives you 30.
help me plsssss!!!!!
Answers
Answer: The correct answer is 34.5
Step-by-step explanation:
1. She did not need to multiply both sides by -7.5
2. A negative * a negative will make a positive number
Hope this helps!
Nguyen has the following cans of soup in his pantry:
4 cans of chicken noodle soup
2 cans of tomato soup
3 cans of vegetable soup
3 cans of potato soup
He randomly chooses a can of soup for lunch. What is the probability that he will choose tomato soup?
Answers
Answer:
Step-by-step explanation:
The chance is 1/3!
hope this helps!
Jada’s babysitter is times Jada’s current age. In 5 years, Jada will be her
babysitter’s current age.
How many years old is Jada now?
Answers
Answer:
5 years old.
Step-by-step explanation:
Let's call Jada's current age "J" and the babysitter's current age "B".
From the information given, we know:
B = J (Jada's babysitter is J times Jada's current age)
J + 5 = B (In 5 years, Jada will be her babysitter's current age)
By substituting the first equation into the second equation:
J + 5 = J
5 = J
Therefore, Jada is currently 5 years old.
I dont get this pls help
Answers
Answer:
First and second are functions, third isn't
Step-by-step explanation:
PLS GIVE BRAINLIEST
Answer:
1 and 2 are vertical
Third one is NOT
I NEED HELP FAST please
Answers
a) The step where Mardie first made an error is given as follows: Step 1, as the negative sign means that the sign of each term inside the parenthesis should be changed.
b) The correct expression is given as follows: -8.6b + 28.
How to simplify the expression?The expression in the context of this problem is defined as follows:
(-3.78b + 12) - (4.82b - 16).
The negative sign before the parenthesis means that the sign of each term inside the parenthesis is changed, hence:
-3.78b + 12 - 4.82b + 16.
This is the step where Maddie made the first error.
Then, to simplify the expression, we combine the like terms, as follows:
b(-3.78 - 4.82) + 12 + 16 = -8.6b + 28.
More can be learned about simplification of expressions at https://brainly.com/question/723406
#SPJ1
Follow the rule to find the next three numbers in the pattern. Describe the pattern using the terms even and odd
Add 5: 1, 6, 11, ___, ___, ___
_________________________________________________________
Answers
Answer:
16, 21, 26
the number pattern is odd, because 5 is an odd number.
Answer: 16 21 26
Step-by-step explanation:
PLEASE HELPPP
a hot water tank was full of hot water before eddy used 15 gallons to wash clothes now there is only 80% of the water. how much water, in gallons, does the hot water tank hold?
Answers
Why?: Take 80 percent of 15 gallons.
A square has an area of 145.7 square feet. To the nearest integer, what is the length of one side?
Answers
145.7 divided by 4= 36.425
And rounding to the nearest integer that would be 36
Now consider the family of lines ax + by = c such that a, b and c are consecutive multiples of each other. what would that mean? give some examples of such lines in this family (coordinates.) what do you notice or wonder?
Answers
Answer:
The first thing that was a good app is the app it needs a little bit of the app and it keeps crashing when it comes to my iPad to play with the iPhone and iPad version of my iPad to get my iPhone and iPhone app for my iPad to use it on the iPad app to get a iPhone app for my iPad iPad to get the iPhone version of my iPad version and I can get a few of my iPhone and iPhone version
Step-by-step explanation:
please help I dont know how to do this.
Answers
Answer: The expression would be 2b+7
Step-by-step explanation:
b will be the number of blue beads for the bracelet.
The number of red beads will be represented as b + 7.
Determine the expression for the total number of beads.
Then we can written it as,
= b + (b +7)
= 2b + 7.
:)
please answer wigth good explanation
Answers
Which of the following expressions represents the distance between -3.9 and -4.7
|−4.7−3.9|
| -3.9-4.7| PLEASE include explanation
Answers
Answer:
I believe it wouldn't be either.
Step-by-step explanation:
Distance is the difference between two positions. That is x1- x2 Since both numbers were negative, you would want the absolute value of one plus the other, because subtracting negative results in a positive. For this example the distance would look more like this:
| -4.7 - ( -3.9 ) | = .8
I need to finish this Monday. I missed the lesson. I don't know what to do. We have to answer them with pattern blocks. The third picture is an example.
Answers
Have you tried to look at the links?
respond with info.
need help pls (tell me by step)
Answers
Answer:
To convert pounds to ounces, multiply the amount of pounds by 16.
is there anything else u need help with :)
Step-by-step explanation:
sooo 3x16=48 and then u would divide 48 by 2 and u would get =24 so he can fill 24 cracks
24
Step-by-step explanation:
multiply 3 by 16 to convert to ounces the divide by 2
1. Twelve large bottles of water cost $9.
How many bottles can you buy for $3?
What is the cost per bottle of water
How much would 7 bottles of water cost?
------------------------------------------------------
2.A 10-pound sack of flour costs $8.
How much does 40 pounds of flour cost?
What is the cost per pound of flour?
-------------------------------------------------------
3. Four bags of chips cost $6.
What is the cost per bag?
At this rate, how much will 7 bags of chips cost?
-----------------------------------------------------------------------
4. At a used book sale, 5 books cost $15.
What is the cost per book?
At this rate, how many books can you buy for $21?
-------------------------------------------------------------------------
5. Neon bracelets cost $1 for 4.
What is the cost per bracelet?
At this rate, how much will 11 neon bracelets cost?
Answers
Answer:1. $3- 4 bottles, 1 bottle = 4/3 , 7 bottles= 28/3
2. 40 pounds=$32, 1 pound= $8/10
3. Per bag= 3/2, 7bags= 21/2
4. Per book = $3, 21 books= $63
5. Per bracelet = 0.25 cents, 11 bracelets = 2 dollars 75 cents
Step-by-step explanation:
It is 0.75 a bottle. We know that because 0.75 times 12 equals nine, so that checks our work.
7 bottles of water would cost 5.25 dollars because 0.75x7 is 5.25
Answer 2: 40 pounds would cost $32 because 10x4=40 so we can do $8x4= $32
It is 0.8 per pound. We know this because you divide 10 by 8 and it’s 0.8
Answer 3: It’s $1.50 per bag. We know that because $4 divided by 6 is $1.50.
At that rate, 7 bags would be $10.50. Because 1.50 times 7 equals 10.50.
Answer 4: it is 3 dollars per book. Because 15 divided by 5 is 3. At that rate we can buy 7 books because 7 times 3 is twenty one.
Answer 5: it is 0.25 per bracelet. We know this because 1 divided by 4 is 0.25. At that rate 11 bracelets will cost 2.75 dollars. We know this because 0.25 times 11 equals 2.75!
Hope this helps!
Can Pi be written as a fraction? .
Answers
Answer: No
Step-by-step explanation: Fraction cannot express its exact value.
Answer:
No
Step-by-step explanation:
Pi is an irrational number. An irrational number cannot be written as an integer over and integer. Integers are the group of numbers that are whole numbers and their opposites. Whole number are 0,1,2,3.. So integers are ... -3,-2,-1,0,1,2,3...Some people will use \(\frac{22}{7}\) as an approximation for pi. 22 and 7 are integers and irrational numbers cannot be written this way.
Earn points, answer both questions!
Answers
Answer:
Area of five squares = 1289.09 square units
Perimeter = 194.6 units
Step-by-step explanation:
Area of square and perimeter:
First find the length of each square, then find the area of each square.
To find the area of five squares, add all the area of each square.
Side of square1 = 27 units
\(\sf Side \ of \ square2 = \dfrac{2}{3}*27=2*9 = 18 \ units\\\\Side \ of\ square3= \dfrac{2}{3}*18=2*6=12 \ units\\\\Side \ of \ square4=\dfrac{2}{3}*12=2*4=8 \ units\\\\Side \ of \ square5=\dfrac{2}{3}*8=\dfrac{16}{3}=5.3 \ units\)
Area of square1 = 27*27 = 729 square units
Area of square2 = 18*18 = 324 square units
Area of square3 = 12*12 = 144 square units
Area of square4 = 8*8 = 64 square units
Area of square5 = 5.3*5.3 = 28.09 square units
Area of five squares = 729 + 324 + 144 + 64 +28.09
= 1289.09 square units
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Perimeter of the composite figure = (27 + 27+27+9) + (18+18+6) +(12+12+4) + (8+8+2.7)+ (5.3+5.3+5.3)
= 90 + 42 + 28 + 18.7 + 15.9
= 194.6 units
the perimeter is 194.6 units