A loaded moving truck is traveling 25 mph faster than a freight train. In the time it takes the train to travel 90 miles, the truck travels 140 miles. Find the speed of the truck.
Answer:
70
Step-by-step explanation:
if the train is traveling 90 miles in 2 hours then its going 45 mph so 25 + 45 = 70 and 70 mph is 140 in 2 so then the equation is true
A bag has 14 yellow marbles and 4 red marbles. Half of the red marbles are made of glass. A marble is selected at random from the bag. What is the probability that it is a red, glass marble?
Answer:
2/18, or 1/9
Step-by-step explanation:
Lets start by finding out how many red, glass marbles there are.
Half of the red marbles of glass, and there are four red marbles. All we need to do is divide 4 by 2.
4/2=2
There are two glass marbles.
Now we just need to add the number of red marbles to yellow marbles. That would be 14+4, which is 18.
In conclusion, there are 2 red marbles, and 18 marbles in total, so it would be 2/18. Simplified, it would be 1/9.
.65,6.5,2/3,1/2 least to greatest
Answer: 1/2 < 0.65 < 2/3 < 6.5
Step-by-step explanation:
Given information
0.65, 6.5, 2/3, 1/2
Convert fractions into decimals
0.65 = 0.65
6.5 = 6.5
2/3 = 0.67 (Rounded to hundredth place)
1/2 = 0.5
Arrange decimals from least to greatest
0.5 < 0.65 < 0.67 < 6.5
Convert terms back to the given form
1/2 < 0.65 < 2/3 < 6.5
Hope this helps!! :)
Please let me know if you have any questions
real number venn day 1 activity sheet .
1. Identify the terms in the expression
1.3x - 2.7x2
-
5.4x + 3
50 points whoever aswners it
Answer:
- and+
Step-by-step explanation:
Answer:
1.3x, -2.7, x^2 (x squared), -5.4x, +3 are the terms. hope this helps
Step-by-step explanation:
- Zombie
HELP MARKING BRAINLIEST EXTRA POINTS !!
explain how you would find the perimeter and area of the quadrilateral shown on the coordinate grid what does the slope of the segments that are what sides of the figure have to do with classifying the quadrilateral.
Answer:
The quadrilateral is a rectangle[tex]Perimeter=8\sqrt{2} \,\,Unit[/tex][tex]Area=6\,\,sq.unit[/tex]Step-by-step explanation:
Given,
[tex]A=(0,0)\\B=(1,1)\\C=(4,-2)\\D=(3,-3)[/tex]
Now,
[tex]Slope\,\,for\,\,AB=\frac{1-0}{1-0} =1\\\\Slope\,\,for\,\,CD=\frac{-3+2}{3-4} =1\\\\Slope\,\,for\,\,AD=\frac{-3-0}{3-0} =-1\\\\Slope\,\,for\,\,BC=\frac{-2-1}{4-1} =-1\\\\So,AB||CD\,\,and\,\,AD||BC[/tex]
[tex]AB=\sqrt{(1-0)^2+(1-0)^2}=\sqrt{2}\\BC=\sqrt{(4-1)^2+(-2-1)^2}=3\sqrt{2}\\CD=\sqrt{(3-4)^2+(-3+2)^2}=\sqrt{2}\\AD=\sqrt{(3-0)^2+(-3-0)^2}=3\sqrt{2}\\\\So,\,\,AB=CD,AD=BC\\The\,\,quadrilateral\,\,is\,\,a\,\,rectangle[/tex]
[tex]Perimeter=2*(AB+AD)=2*(BC+CD)\\=2*(\sqrt{2}+3\sqrt{2})=8\sqrt{2} \,\,Unit[/tex]
[tex]Area=AB*AD=BC*CD=\sqrt{2} *3\sqrt{2}=6\,\,sq.unit[/tex]
Hope you have understood this.....
ask me if you have any confusion.....
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SOMEONE HELP ME PLEASE
Answer:
6.3 cm
Step-by-step explanation:
The distance from each centimeter is divided into 10 parts. Point A starts at 0 and goes until right before 6.5. The big line between each whole number signifies that you are halfway through the centimeter. As you can see, point B is right before a big line, so can't be bigger than 6.5 nor equal. The only option that fits this is 6.3 cm
The answer is 6.3 cm
If helpful, brainliest please !
If ∠MOK and ∠JOM are supplementary angles, then what is the value of x and m∠LOK?
A.
x = 130; m∠LOK = 66°
B.
x = 50; m∠LOK = 114°
C.
x = 114; m∠LOK = 50°
D.
x = 66; m∠LOK = 130°
Answer:
B
Step-by-step explanation:
Note that angle JOM and angle LOK are vertical angles meaning that they are congruent ( equal to each other )
We are given that angle MOK and angle JOM are supplementary
Supplementary angles add up to 180
This means that:
angle MOK + angle JOM = 180
If angle JOM = angle LOK
Then angle MOK + angle LOK also = 180
If angle MOK = 66 and angle LOK = x + 64
Then 66 + x + 64 = 180
Note that we've just created an equation that we can use to solve for x
We now solve for x
66 + x + 64 = 180
Combine like terms
66 + 64 = 130
130 + x = 180
Subtract 130 from both sides
x = 50
We also want to find the measure of angle LOK.
To do so we simply plug in the value of x into x + 64
angle LOK = x + 64
x = 50
angle LOK = 50 + 64 = 114
So x = 50 and angle LOK = 114
Hence the answer is B
The only gift certificates that a certain store sold yesterday were worth either $100 each or $10 each. If the store sold a total of 20 gift certificates yesterday, how many gift certificates worth $10 each did the store sell yesterday
Step-by-step explanation:
I guess the answer is $200
I'm just guessing tho
Express (x – 7)^2
as a trinomial in standard form.
Answer:
[tex] {(x - 7)}^{2} \\ = {x}^{2} - 2 \times x \times 7 + {7}^{2} \\ = {x}^{2} - 14x + 49 \\ thank \: you[/tex]
Step-by-step explanation:
( x - 7)^2 is the same as :
( x - 7)* ( x - 7)
x ( x - 7) - 7(x - 7)
x² - 7x - 7x + 49
x² - 14x + 49
hope this helps
I need help with this please!!
Answer:
Step-by-step explanation:
B.
answer pls
-2(1-5v)=-(2-4v)
Answer:
v = 0
Step-by-step explanation:
-2 (1 - 5v) = - (2 - 4v)
Simplify the equation down to the following:
-2 + 10v = -2 + 4v
Do the inverse operation for each side:
10v = 0 + 4v
6v = 0
6v/0 = 0/0
No solution
Solve for X
2x+5=x-10
Answer:
x = -15
Step-by-step explanation:
Subtract x on both sides
x + 5 = -10
Subtract 5 on both sides
x = -15
Check work:
2(-15) + 5 = -15 - 10
-30 + 5 = -25
-25 = -25
PLEASE HELP ME!!!!!!
Is the mean greater than, less than, or equal to the median? Explain your reasoning.
Answer:
equal to
Step-by-step:
Again, the mean reflects the slanted the most.
To summarize, generally if the distribution of data is slanted to the left, the mean is less than the median, which is often less than the mode. If the distribution of data is slanted to the right, the mode is often less than the median, which is less than the mean.
Answer:
Equal
Step-by-step explanation:
The median is the midmoint of all points (as many values below as above this value). The mean is the (sum of values) / (count of values). Since every value has the exact same count, the mean and median will be the same.
How can I solve this?
: 2(2x-7)+2(4x+3)=112
Step-by-step explanation:
Answer: Third Choice. 112 = 2 (2x - 7) + 2 (4x + 3)
Concept:
Here, we need to know how to find the perimeter of a rectangle.
Perimeter (rectangle) = 2l + 2w
l = length
w = width
Solve:
Given information
l = 2x - 7
w = 4x + 3
Perimeter = 112 cm
Given expression
Perimeter = 2l + 2w
Substitute values into the expression
[tex]\boxed{112 = 2 (2x - 7) + 2 (4x + 3)}[/tex]
Expand parentheses
112 = 4x - 14 + 8x + 6
Combine like terms
112 = (4x + 8x) + (6 - 14)
112 = 12x - 8
Add 8 on both sides
112 + 8 - 12x - 8 + 8
120 = 12x
Divide 12 on both sides
120 / 12 = 12x / 12
[tex]\boxed{x=10}[/tex]
Hope this helps!! :)
Please let me know if you have any questions
23. The table shows the number of hours a group of friends
worked doing various jobs and the amount each earned.
Select the correct hourly rate to complete the table. Then
place a checkmark in the row for the person who had the
greatest hourly rate.
Hours
Amount Earnings Greatest
Worked Earned (s) per hour ($) Hourly Rate?
36.25
Caleb
5
Jeremy
7.5
65.25
Maria
4.25
34.00
Rosa
8
54.00
Find the area of this circle. Use 3 for pi please
Answer:
108 cm²
Step-by-step explanation:
A = πr²
A = 3 * 6²
A = 3 * 36
A = 108
If my answer is incorrect, pls correct me!
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-Chetan K
Nikki's cousin lives 60 miles away, so Nikki decided
to take the train to visit him. If the trip took
2 hours, how many miles per hour did the train
travel?
Answer:
30
Step-by-step explanation:
just divide 60 by 2
If the distance between Nikki's cousin and Nikki is 60 miles and covered in 2 hours then the speed of the train is 30 miles per hour.
What is speed?The distance covered by the particle or the body in an hour is called speed. It is a scalar quantity. It is the ratio of distance to time.
We know that the speed formula
[tex]\rm Speed = \dfrac{Distance}{Time}[/tex]
Nikki's cousin lives 60 miles away, so Nikki decided to take the train to visit him. If the trip took 2 hours. Then the speed of the train will be
[tex]\rm Speed = \dfrac{60}{2}\\\\Speed = 30 \ miles/hour[/tex]
More about the speed link is given below.
https://brainly.com/question/7359669
#SPJ2
Meryl needs to add enough water to 11 gallons of an 18% detergent solution to make a 12% detergent solution. Which equation can she use to find g, the number of gallons of water she should add?
Original
(Gallons)
Added
(Gallons)
New
(Gallons)
Amount of Detergent
1.98
0
Amount of Solution
11
g
StartFraction 1.98 Over 11 + g EndFraction minus StartFraction 12 Over 100 EndFraction = 1
StartFraction 1.98 Over 11 + g EndFraction + StartFraction 12 Over 100 EndFraction = 1
StartFraction 11 + g Over 1.98 EndFraction = StartFraction 12 Over 100 EndFraction
StartFraction 1.98 Over 11 + g EndFraction = StartFraction 12 Over 100 EndFraction
Answer:
its A
Step-by-step explanation:
i took the quiz :)
Answer:
B on edge 2022
Step-by-step explanation:
Need help anyone????
35. The circumference of a circle is 67
inches. What is the area of the circle?
A=2
Answer:
B
Step-by-step explanation:
hopefully it makes sense and is visible:)
====================================================
Work Shown:
C = 2*pi*r .... circumference equation
6pi = 2pi*r .... replace C with the given circle perimeter
6 = 2r .... divide both sides by pi, they cancel
6/2 = r
3 = r
r = 3 ... is the radius
------------
A = pi*r^2 .... area of circle equation
A = pi*3^2
A = pi*9
A = 9pi .... which points to choice B as the final answer
Factor completely: 10a2 - 15a + 4ab - 6b.
A)(2a - 3)(5a + 2b)
B)(2a - 3b)(5a + 2)
C)(2a + 3)(5a - 2b)
D)(2a- 3) (5a²-2b)
Answer:
A
Step-by-step explanation:
[tex]10 {a }^{2} - 15a + 4ab - 6b \\ 5a(2a - 3) + 2b(2a - 3) \\ (5a + 2b)(2a - 3)[/tex]
hopefully it makes sense
:)
find the value of x
Answer:
65°
Step-by-step explanation:
what is the magnitude of the charge if the charge is 5
Answer:
5
Step-by-step explanation:
Answer:
The answer is 5
Step-by-step explanation:
V=s^2h/3
Find the volume of a square pyramid If ‘s’ is increased by 30% and ‘h’ remains constant
Answer:
1.69s^2h/3.
Step-by-step explanation:
New s = 1.3s
New volume = (1.3s)^2h /3
= 1.69s^2h/3.
The graph shows the number of appearances of hockey teams in the Stanley Cup Finals.
a. Write the ratio that compares the appearances made by the Rangers to the appearances made by the Canadiens in simplest form. Then explain its meaning
Answer:
Step-by-step explanation:
Important fact: much as I hate to admit it, in all professional sports, there is no team that has made as many appearances in the sports final as the Canadiens.
The ratio you want is 10/32 = 5/16.
The ratio means that for every 5 appearances the rangers made, the Canadiens made 16 appearances.
??????????????????????????????
Answer:
i finished on the other question yw
Step-by-step explanation:
also not sure if you wanted the values for n
edit:
7. n/2 = 16
8. 2n + 4 = 52
9. 2(n + 5) = 17
10. 3n - 12 = 5
Answer:
7. 32
8. 24
9. 3.5
10. 5.6
Step-by-step explanation:
7. write the equation: n/2=16. Cross multiply.
8. write the equation: 52= 4+2n. Move 4 to the other side and subtract from 52: 48= 2n. Divide both sides by 2.
9. write the equation: 2(5+n)=17. Use the distributive property. Move 10 to the other side and subtract from 17: 2n=7. Divide both sides by 2.
10. write the equation 3n-12=5. move -12 over and add to 5: 3n=17. Divide both sides by 3.
brainliest plzzzzzz
I neeed Help it easy
what are the measures of other angles of parallelograms 56
[tex]\\ \rm\longmapsto A+D=180[/tex]
[tex]\\ \rm\longmapsto D=180-56=124[/tex]
<D=<B=124°[/tex]A jar contains some number of pennies. When pennies are removed 2, 3, 4, 5, 6 or 8 at a
time, one penny is left over. There are no pennies left over when they are removed 7 at a
time. What is the least number of pennies that could be in the jar?
Answer:
721.
Step-by-step explanation:
The total number must be a multiple of 7
One less than the number is the LCM of 2 3 4 5 6 and 8.
The LCM is worked out as follows
2
3
4 = 2*2
5
6 = 2*3
8 = 2*2*2
LCM = 2*2*2* 3*5 = 120
But 121 is not divisible by 7 so it must be a multiple of 120 + 1 which is divisible by 7.
240 + 1 = 241 - not divisible by 7
480 + 1 = 481 - not divisible by 7
720 + 1 = 721
721/7 = 103
Answer:
Step-by-step explanation:
Let say n the number of pennies in the jar.
n is a multiple of 7 : n=7*k
n-1 is a multiple of 2,3,4,5,6,8 so a multiple of the lcm= 120
n-1=120*t
n-1=120*t
n=7*k
120*t=7k-1
7k=120*t+1
[tex]k=\dfrac{120*t+1}{7}\\k=17*t+\dfrac{t+1}{7}\\t=6+7*a\\k=17*(6+7a)+\frac{6+7*a+1}{7} =102+119*a+1+a=103+120*a\\n=7*k=7*(103+120*a)=721+840a\\\\[/tex]
The least number of pennies is 721 (when a=0)
Proof:
n-1=720
720/2=360
720/3=240
720/4=180
720/5=144
720/8=90
721/7=103