answer: 68
work:
all you basically do is just divide 272 by 4
If Ralph drove 272 miles in 4 hours then 68 miles per hour is the average speed
What is Division?
A division is a process of splitting a specific amount into equal parts.
Given that Ralph drove 272 miles in 4 hours
We need to find his average speed
The speed of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time
Speed=Distance/ Time
Average speed=272/4
=68 miles per hour
Hence, if Ralph drove 272 miles in 4 hours then 68 miles per hour is the average speed
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Write an expression to represent the sum of three times the square of a number and .
In your expression, what is the value of the constant?
Answer:
3x^2-7
-7 is the constant
3 is the coefficient
x is the variable
Step-by-step explanation:
(3x^2)+(-7)
PLEASE HELP!!
For what value of x does 2x-4/x+7 = 1/3?
A. 33/5
B. 2
C. 19/5
D. -7
Answer:
A i think
Step-by-step explanation:
1 Multiply both sides by 3x3x.
6{x}^{2}-12+21x=x6x
2
−12+21x=x
2 Move all terms to one side.
6{x}^{2}-12+21x-x=06x
2
−12+21x−x=0
3 Simplify 6{x}^{2}-12+21x-x6x
2
−12+21x−x to 6{x}^{2}-12+20x6x
2
−12+20x.
6{x}^{2}-12+20x=06x
2
−12+20x=0
4 Use the Quadratic Formula.
x=\frac{-20+4\sqrt{43}}{12},\frac{-20-4\sqrt{43}}{12}x=
12
−20+4√
43
,
12
−20−4√
43
5 Simplify solutions.
x=-\frac{5-\sqrt{43}}{3},-\frac{5+\sqrt{43}}{3}x=−
3
5−√
43
,−
3
5+√
43
A carpenter can build 8 cabinets in 3 hours. At this rate, how long will it take for the carpenter to build 26 cabinets?
a. 8 hours
c. 21 hours
b. 9 hours 45 minutes
d. 69 hours 20 minutes
Answer: 21 hours
Step-by-step explanation:
i’m not sure how to solve it i just guessed and got it right
Answer:
21
Step-by-step explanation:
simply this expression -7/10- (-5/3)
Answer:
1
I got it right on a test. Hope it works for you. :)
Answer:
-7/10- (-5/3)
-7/10 +(5/3) [two consecutive negatives make a positive]
-21+50/30=29/30 or 0.96666666666
New York City is a popular field trip destination. This year the senior class at High School A and the senior class at High School B both planned trips there. The senior class at High School A rented and filled 3 vans and 14 buses with 509 students. High School B rented and filled 12 vans and 10 buses with 472 students. Each van and each bus carried the same number of students. Find the number of students in each van and in each bus.
Answer:
Step-by-step explanation:
Let's say :
v = number students in van, b = number of students in bus
From the info provided in the question:
High school A takes 3 vans and 14 buses for 509 students
We can write this as:
3v + 14b = 509
You can re-write this as :
3v = 509 - 14b
We also know High School B takes 12 vans and 10 buses for 472 students:
12v + 10b = 472
Since we already know that 3v = 509 - 14b , substitute this equation into the above formula and you get:
12v + 10b = 472
4(509 - 14b) + 10b = 472
2036 - 56b + 10b = 472
2036 - 46b = 472
2036 - 472 = 46b
1564 = 46b
Divide both sides by 46 to find "b".
b = 1564/ 46 = 34
Therefore the number of students that fit in each bus is 34.
So since we know b = 34, substitute b into the equation at the top:
3v = 509 - 14b
3v = 509 - 14(34)
3v = 509 - 476 = 33
Divide both sides by 3 to find "v".
v = 33/3 = 11.
Therefore the number of students in each van is 11.
2.6 A printer can print 12 color pages in 3 minutes. How many color pages can the printer print in 9 minutes?
Answer:
36
Step-by-step explanation:
12 times 3 = 36
Interpret the meaning of y-intercept in this context
Answer:
Its 8
Step-by-step explanation:
This is the highest peak
Austin is building a miniature replica of the empire state building. the actual empire state building is 1,423 feet tall and 6,000 feet wide. if Astin's replica has a width of 60 centimeters, what is the hight of his empire state building replica rounded to the nearest centimeter?
60/6000 = x/1423
100/1 = 1423/x
100x = 1423
x = 14.23 --> About 14 cm
what is -18+-90 i know im just answering it for you
Answer:
-18+(-90) = -18-90 = -108
Answer:-108
Step-by-step explanation:
What single transformation was applied to triangle A
to get triangle B?
Answer: translation
Answer:
Translation
Step-by-step explanation:
Nick buys 6 cupcakes and a bottle of water for $2. If he spent $20 in total how much was each cupcake
Answer:
3 dollars
Step-by-step explanation:
20 dollars is his total
$20-2 dollar water bottle=18
18 dollars divided by 6 cupcakes equals 3 dollars for each cupcake.
The Chang family is on their way home from a cross-country road trip. During the trip, the function D(t) = 2,280 – 60t can be used to represent their distance, in miles, from home after t hours of driving.
What is the value of D(15)?
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[tex]D(t) = 2280 - 60t[/tex]
[tex]D(15) = 2280 - 60(15)[/tex]
[tex]D(15) = 2280 - 800[/tex]
[tex]D(15) = 1480[/tex]
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Answer:
1380
Step-by-step explanation:
d(t)=2280-60t
d(15)=2280-60(15)
2280-900
=1380
1/2 divided by (-3) sorry I just don’t get any of this
Answer:
-1/6
Step-by-step explanation:
solve the equation 2y + 5x = 4 for y
pls help
Answer:
-3
I think hope this helps.
Answer:
y = 2- [tex]\frac{5x}{2}[/tex]
Step-by-step explanation:
another word for multiplicative inverse
Answer:
Reciprocal
Step-by-step explanation:
That's it right there
(11x-3) (4x+39) find x
Answer:
x=6
Step-by-step explanation:
Which transformation maps the pre-image to the
image?
O dilation
O translation
O reflection
O rotation
Find the slope of the following line containing the following points (4,5) and (11,33)
What is the GCF OR 24 and 34
Answer:
Greatest Common Factor of 24 and 34 Greatest common factor (GCF) of 24 and 34 is 2.
Step-by-step explanation:
Find the x and y intercept of the following equation 4x-10y=20
For the given linear equation we have:
y-intercept: y = -2x-intercept: x = 5.How to find the intercepts for the linear equation?Here we have a linear equation:
4x -10y = 20
First, let's find the y-intercept, this is the point with x = 0, so evaluating in that we get:
4*0 - 10y = 20
-10y = 20
y = 20/-10
y = -2
The x-intercept is what we get by evaluating in y = 0.
4x - 10*0 = 20
x = 20/4
x = 5
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Use the Distance Formula to find the distance between (-1,4) and (4,1)
Answer:
[tex]\sqrt{34}[/tex] or 5.831
Step-by-step explanation:
Plug the coordinates into the formula and there's your answer.
HELP ME WITH THIS IT IS REALLY HARD
Answer:
-3. 1/8
Step-by-step explanation: it’s negative three and 1/8
Graph please help x and y values
Answer:
(-5, 1)
Step-by-step explanation:
What’s the equation of the line?
Answer:
x = -1/3+3
slope = -1/3
Step-by-step explanation:
please help 8th grade math
Answer:
[tex]n \geq -\frac{-29}{28}[/tex]
Step-by-step explanation:
[tex]-3(1 - 7n) \geq -32 - 8n\\-3 + 21n \geq -32 -8n\\[/tex]
+8n +8n
[tex]-3 + 28n \geq -32\\+3 +3\\28n \geq -29\\/28 /28\\n \geq \frac{-29}{28}[/tex]
f(3) = 5x + 5, find f(-4)
Answer:
-15
Step-by-step explanation:
substitute -4 for x:
5(-4)+5
-20+5
= -15
Solve 8 (a+4) + 4a = 36 + 8a
Answer:
Hi there
Your answer is
a=1
Step-by-step explanation:
8(a+4)+4a=36+8a
8a+32 + 4a = 36+8a
12a+32=36+8a
-8a
4a+32=36
-32
4a=4
/4
a=1
Which graph shows the result of dilating this figure by a factor of 4 about the origin?
B is the answer just took the test
The pizza shop is running a special: 2 medium pizzas
for $6.99 each. How much would it cost to by 12
pizzas?
Answer:
41.94
Step-by-step explanation:
12 divided by 2 is 6 and six times 6.99 gets you your answer of 41.94
Answer:
$72.00
Step-by-step explanation:
Lets round $6.99 to $7.00. Now we have an easier number to work with.
To find the total price of 12 , we need to multiply $7.00 by 12.
⇒ $7.00 x 12 = $84.00
Since we added 1 cent to $6.99 and multiplied by 12, we need to sutract 1 times 12.
1 x 12 = 12
$84 - $12 = $72.00
If f(x)=3x+2, what is f(5)
A. 1
B. 17
C. 13
D. 10