Answer:
Speed in heavy traffic is 32 miles per hour
Step-by-step explanation:
Total distance = 252miles
Total time = 4.5hours = 4 hours + 30minutes
Let the speed in heavy traffic = x
distance = time * speed
First half hour
D1 = 0.5*x
The speed after the traffic = 2x - 5
D2= 4* (2x - 5)
Total distance = D1 + D2
[tex]\frac{x}{2}[/tex] + 8x - 20 = 252
[tex]\frac{17x}{2}[/tex] = 272
x = [tex]\frac{272}{17}*2[/tex]
x = 32 miles per hour
15% off of $60, then subtracting 10% from that cost, is equal to
Answer:
8.1 i think
Step-by-step explanation:
Buddy and his team have been asked by NASA to make a space shuttle cake (a scale model shaped like the one to the left) for a fundraising event. The original space shuttle has a height of 184 ft and a wingspan of 78 ft. Buddy and his team decide to construct the cake on-site so that they do not have to worry about transporting it. Buddy decides to make a cake with a wingspan of 10 ft and asks one of his decorators, Ivette, to calculate the height of the cake. Ivette decides that the cake should be approximately 4 ft tall.
Answer:
Ivette is wrong and by a lot. The spaceship should be 23.59 feet high
Step-by-step explanation:
The relationship between the spaceship's height and width = 184 feet : 78 feet ≈ 92 : 39 ≈ 9.2 : 3.9. This means that for every 3.9 feet wide, the cake should be 9.2 feet high.
In this case, the spaceship is 10 feet wide, so it should be (10 / 3.9) x 9.2 = 23.59 feet high.
When you make scale drawings or scale cakes, you must keep the same proportions as the original model.
In a survey of 2,800 people who owned a certain type of car, 1,400 said they would buy that type of car again. What percent of the people surveyed were satisfied with the car?
Answer:
50% of people would buy the car again.
Step-by-step explanation:
2800 divided by 2 is 1400.
The percent of the people surveyed were satisfied with the car is 50%.
Given that,
In a survey of 2,800 people who owned a certain type of car, 1,400 said they would buy that type of car again.Based on the above information, the calculation is as follows:
[tex]= 1400 \div 2800[/tex]
= 50%
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1. Solve for x: 7x + 15 = 38 (5 points) (A.23/7) (B.53/7) (C.23) (D.53)
Answer:
A. 23/7
Step-by-step explanation:
Step 1:
7x + 15 = 38 Equation
Step 2:
7x = 23 Subtract 15 on both sides
Step 3:
x = 23 ÷ 7 Divide
Answer:
x = 23/7
Hope This Helps :)
Answer:
23/7
Hope this helps..
I am not sure with the answer..
but I think it's correct
What is the slope in the equation y=3/4x
What is the y-intercept also?
Answer:
slope = 3/4
y- intercept : (0,0)
Step-by-step explanation:
Sheldon needs to buy 9 gallons of ice cream for a family reunion. The table shows the prices for different
sizes of two brands of ice cream.
View Exal
Step-by-
Cold Farms
Sweet Dreams
Price of small size
$4.50 for 1 pint
$2.25 for 1 quart
Price of large size
$8.50 for 1 quart
$5.50 for 1 gallon
Video Tut
Textbook
Which size container of Cold Farm ice cream is the better deal for Sheldon? Complete the explanation to
justify your answer.
Print
72 pints of Cold Farm ice cream cost $[ and 36 quarts of Cold Farm ice cream cost $
(select) size container is the better deal for Sheldon.
The
9514 1404 393
Answer:
$324 for 72 pints$306 for 36 quartslarger size is better dealStep-by-step explanation:
The cost of 72 pints is 72 times the cost of 1 pint:
72 × $4.50 = $324.00 . . . cost of 72 pints
The cost of 36 quarts is 36 times the cost of 1 quart:
36 × $8.50 = $306.00 . . . cost of 36 quarts
__
The price for quart containers is lower, so the larger size is the better deal.
Tao wants to check that the expression 3(4x – 6) simplifies to 12x – 18. What is the value when 2 is substituted for x into both expressions? The value of each expression is 2. The value of each expression is 6. The value of one expression is 2, and the value of the other expression is 6. The value of one expression is 6, and the value of the other expression is –6.
Answer:
The value of each expression is 6.
Step-by-step explanation:
3 * 4 = 12 and 3 * 6 = 18
So 3(4x - 6) = 12x - 18
12(2) - 18 = 24 - 18 = 6
Answer:
the value of each expression is 6
Step-by-step explanation:
edge 2020
Eli's Diner sold 50 milkshakes last week. 60% of the milkshakes had whipped cream on top. How many milkshakes with whipped cream were sold?
Answer:
30 will be the number of milkshakes had whipped cream on top.
Step-by-step explanation:
Total number of milkshakes sold by Eli's Diner last week = 50
As 60% of the milkshakes had whipped cream on top.
Let x be the number of the milkshakes had whipped cream on top.
[tex]x=\frac{60}{100}\times 50[/tex]
[tex]x=\frac{60}{2}[/tex]
[tex]x=30[/tex]
Therefore, 30 will be the number of milkshakes had whipped cream on top.
question 4 pleeeeease help
PLEASE HELP!!
You need to factor by grouping.
Please explain the steps!
Answer:
3(k-4)(7k^2+5)
Step-by-step explanation:
1) Factor out GCF
3(7k^3-28k^2+5k-20)
2)Split into two
3) Factor
3*7k^2(k-4)+5(k-4)
3(k-4)(7k^2+5)
y = -4x + 6
y = -2x - 2
Solve for x and y
Answer:
(4,-10)
Step-by-step explanation:
You set them equal to each other.
You get x=4
Sub in 4 for one of the equations
y=-10
Solve for x in y = -4x + 6.
x = −y/4 + 3/2
Solve for x in y = -2x - 2.
x = −y/2 −1
Nothing can be done with y = -4x + 6 and y = -2x - 2
Which number goes in the box?
8 + 9 = 9 +
Answer:
8
Step-by-step explanation:
I hope this helps you out!
Answer:
8
Step-by-step explanation:
...
Which of the following points would be on the graph of the equation y=−4x+6?(−4, −10)(−4, 22)(1, −10)(1, −2)
Answer:
Only the point (-4, 22) is ON THE GRAPH of the equation. Please also check the attached graph.
Step-by-step explanation:
Given the equation
[tex]y=-4x+6[/tex]
Let us substitute all the given points to check which points satisfy the equation.
Substitute (-4, -10) in the equation
[tex]y=-4x+6[/tex]
[tex]-10=-4(-4)+6[/tex]
[tex]-10=16+6[/tex]
[tex]-10=22[/tex]
As the R.H.S ≠ L.H.S, hence (-4, -10) does not satisfy the equation.
Hence, (-4, -10) is NOT ON THE GRAPH of the equation
Substitute (-4, 22) in the equation
[tex]y=-4x+6[/tex]
[tex]22 = -4(-4)+6[/tex]
[tex]22 = 16+6[/tex]
[tex]22 = 22[/tex]
As the R.H.S = L.H.S, hence (-4, 22) satisfies the equation.
Hence, (-4, 22) is ON THE GRAPH of the equation. Please also check the attached graph.
Substitute (1, -10) in the equation
[tex]y=-4x+6[/tex]
[tex]-10=-4(1)+6[/tex]
[tex]-10=-4+6[/tex]
[tex]-10=2[/tex]
As the R.H.S ≠ L.H.S, hence (1, -10) does not satisfy the equation.
Hence, (1, -10) is NOT ON THE GRAPH of the equation
Substitute (1, -2) in the equation
[tex]y=-4x+6[/tex]
-2 = -4(1)+6
-2 = -4 + 6
-2 = 2
As the R.H.S ≠ L.H.S, hence (1, -2) does not satisfy the equation.
Hence, (1, -2) is NOT ON THE GRAPH of the equation
Therefore, from the above analysis, we conclude that only the point (-4, 22) is ON THE GRAPH of the equation. Please also check the attached graph.
Aanya got 5 marks in Science test. Her friend Sneha got 'x' marks more than Aanya. How many marks did they get altogether?
Pls Answer FAST
say hi and i will mark brainllyist or whatever
Answer:
hi hows your day
Step-by-step
HELP!
Which relation is a function?
Select all that apply.
Answer:
A,B,D
Step-by-step explanation:
3(6d - 24) = 6(12 + 3d)
pls solve i need
3D = 32 or D = (10 2/3)
Step-by-step explanation:
We want to make D only one side so we subtract 3D from the left
Then we slowly make the equation smaller and smaller by adding 24 to each side, multiplying the numbers, then finally getting our answers.
Answer:
No solutions
Step-by-step explanation:
Distribute the 3 to the first set of parentheses:
3(6d - 24) = 6(12 + 3d)
18d - 72 = 6(12 + 3d)
Distribute the 6 to the other set of parentheses:
18d - 72 = 72 + 18d
Subtract 18d from both sides:
-72 = 72
-72 [tex]\neq[/tex] 72
Since -72 and 72 are not equal, there are no solutions
Exercise 1: Which of the following is not an equation
(1) 2x + 3 = 10
(2) 3+2 = 5
(3) 3(2x + 1)
(4) 1+ 4 = 10
Answer:
(3) 3(2x +1 )
Step-by-step explanation:
For (1), (2), and (4), all of them give an answer while (3) does not which means that (3) is not an equation.
Haley spent 1/2 hour playing on her cell phone that use 1/9 of her battery how long does she have to play on her phone to use the entire battery?
Answer:
4 1/2 hours.
Step-by-step explanation:
If 1/2 an hour only used up 1/9 of her battery, 9, 1/2 would give us 9/2, which if you simplified it gets you 8 1/2 hours. Hope this helps! Have a great day!
Inside an auditorium, 1 out of 5 people wear hats, and 4 out of 5 people do not wear hats. Based on this information, predict how many wear hats if there are 215 people.
Answer:
43
Step-by-step explanation:
Which of the following graphs represents the equation above -3x+2y=8
Answer:
Is there a picture of the graphs...?
Step-by-step explanation:
Anyways, the answer should be y= 3/2x +4
If you show me the graphs I could possibly help you find which one is correct.
Answer:
Step-by-step explanation:
Here are the graphs, which one goes with
y = 4 + 3/2x ?
Understanding Elevation
Death Valley, Califomia, has an elevation of -282 feet What does this mean?
It is 282 feet above sea level
It is 282 feet below sea level.
It is - 282 feet above sea level
Itis - 282 feet below sea level
Answer:
Step-by-step explanation:
if it has a negative elevation of 282 feet than its below sea level by 282 feet if its 282 feet above with no negative than its 282 feet above sea level i hope this helped
Answer:
hi the answer is b)It is 282 feet below sea level.\
have a nice day!
Step-by-step explanation:
mark me brainliest?
(-3, 8) is a solution to the following system of equations: 4x + 3y = 12 5x + 2y = 1 True False
Answer: True
Step-by-step explanation:
hello, I need help with this! also could you please explain how you did it, thank you! :)
Answer:
-7
Step-by-step explanation:
-2(4 - 5 ) - 1(2 - 5)^2
-2(-1) - 1(-3)^2
2 - 1(9)
2 - 9
-7
Hope this helps. Pls give brainliest.
Answer:
-7
Step-by-step explanation:
Pt.2 Please show your work
Find the slope when given the following points
(-3, 2) and (1, 0)
Answer:
slope is = -1/2
Step-by-step explanation:
y2-y1= 2-0= 2
x2-x1= -3-1= -4
2/-4= -1/2
Find k such that the roots of the quadratic are real, rational, and equal: 9x^2+kx+1=0
Answer:
Step-by-step explanation:
9x^2+kx+1=0
k= -9x-1/x
Sixth grade Y.14 Factor using th
Factor 10y + 20z.
Answer:
17zy
Step-by-step explanation:
big brain
Answer:
y+z=30
Step-by-step explanation:
y=10 z=20
y+z=30
Of the following, which is the solution to 2x2 + 3x = −5?
Answer:
Step-by-step explanation:
Nothing to choose from??/
But 2x^2+3x=-5 is
- 3± i√31 / 4
Answer:
[tex]\frac{-3+-i\sqrt{31} }{4}[/tex]
ye
A deal is a deal, so here is a good one, let's see who gets it right. I had $10.00. My mom gives me $30.00, My dad gave me $30.00. My aunt and uncle give $100.00. I had another $10.00. How much money did I have?
Answer:
$180 in total!
Step-by-step explanation:
10 + 30 + 30 + 100 + 10 = 180
the uncle and aunt gave their money together, it didn't specify that they each gave 100
Answer:
The total amount of money i have is $180.
Step-by-step explanation:
Given information:
The money i have = $10
Mom gives = $30
Dad gives = $30
Aunt and uncle gives = $100
Now i had another $10
The total amount of money (x) i have is the sum of all money i receive.
x = 10+30+30+100+10
x = 180
Hence , the total amount of money i have is $180.
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Please help, please write a proof to prove the “prove” section