Answer:
-6
Step-by-step explanation:
plug -2 into x
Mark uses 19 gallons of gas while traveling 399
miles at a constant rate in his car. How many
miles is Mark able to travel on 9 gallons of gas?
Answer:
189
Step-by-step explanation:
If mark uses 19 gallons to travel 399 miles, that means he was able to travel 21 miles per gallon.
We get this by taking 399 divided by 19.
So if mark travels on 9 gallons of gas and goes 21 miles per gallon, he will have traveled 189 miles.
We get this by taking 21 times 9
At a local restaurant, the amount of time that customers have to wait for their food is normally distributed with a mean of 26 minutes and a standard deviation of 4 minutes. Using the empirical rule, determine the interval of minutes that the middle 99.7% of customers have to wait.
Answer:
burger
Step-by-step explanation:
fSFFSFS
Answer all the questions for a bunch of points, no scam answers please
Step-by-step explanation:
hold up bro. this doesn't even say what u actualy have to do . or is just so blurry
The next event requires each runner to jump 8 hurdles that are spaced 12.3 meters
apart. If there are 15 meters from the starting line to the first hurdle and 10.5 meters
from the last hurdle to the finish line, how long is the race? Show your work.
Answer:The race is 111.6
Step-by-step explanation:The race is 111.6 m long.
8 hurdles spaced 12.3 m apart means 7 spaces that are 12.3 m in length; 7*12.3 = 86.1
Add to this the distance to the first hurdle and the distance from the last hurdle:
86.1+15+10.5 = 111.6 m
Step-by-step explanation:
Answer:
If I am incorrect, please let me know.
Step-by-step explanation:
This is the work I did.
Please mark me brainliest :)
Amelia is making a cookie recipe that requires 4 cups of sugar for every 12 cups of flour. Amelia only has 9 cups of flour. She concludes that she will only need 3 cups of sugar Is Amelia correct? Why or why not?
A Amelia is correct. She needs 3 cups of sugar because the ratio 3:9 is equivalent to 4:12.
B Amelia is correct. One-quarter the amount of sugar is needed because only one-quarter of the recipe will be made.
C Amelia is incorrect. The number of cups of sugar must be reduced by 3 because the number of cups of flour is reduced by 3.
D Amelia is incorrect. She needs 4 cups of sugar because decreasing the number of cups of flour by 3 requires increasing the number of cups of sugar by 3.
Answer:
B
Step-by-step explanation:
Because if you will divide the ratio 4:12 by three- we will get a ratio 1:3. Then we need the last 3 in the ratio 1:3 become a 9. For this we need to multiply it by 3= 1:3 *3= 3:9. This is only 3/4 of whole of recipe.
Answer: Choice A)
Amelia is correct. She needs 3 cups of sugar because the ratio 3:9 is equivalent to 4:12
=======================================================
Explanation:
It might help to think of the ratio 4:12 as the fraction 4/12. Dividing both parts by 4 leads to 1/3.
Similarly, the ratio 3:9 becomes 3/9 which reduces to 1/3.
This shows that 4/12 = 3/9, so the ratios 4:12 and 3:9 are the same.
------------
Another way to show two fractions are equal is to do the steps below
4/12 = 3/9
4*9 = 12*3 ... cross multiply
36 = 36
Since the last equation is true, the first equation must be true.
-------------
Here's another way to see Amelia is correct.
So we know that 4 cups of sugar go with 12 cups of flour. This forms the fraction 4/12.
We also know that she has 9 cups of flour. Let's say we don't know how much sugar she needs, so we'll call this x. We have x cups of sugar go with 9 cups of flour. This forms the fraction x/9.
Equate the two fractions and solve for x
4/12 = x/9
9*4 = 12*x ... cross multiply
36 = 12x
12x = 36
x = 36/12 ... divide both sides by 12
x = 3
She needs 3 cups of sugar
The steps in this section are very similar to the steps in the last section.
Jillian is selling boxes of cookies to raise money for her basketball team. The 10 oz. box costs $3.50, while the 16 oz. box costs $5.00. At the end of one week, she collected $97.50, selling a total of 24 boxes. The system of equations that models her sales is below.
x+ y= 24
3.50x + 5.00y = 97.50
Solve the system of equations. How many 10 oz. boxes were sold?
6
9
12
15
9514 1404 393
Answer:
15
Step-by-step explanation:
We see that x represents the number of 10-oz boxes sold. Then y=24-x is the number of 16-oz boxes sold. Substituting for y in the second equation gives ...
3.50x +5.00(24 -x) = 97.50
-1.50x +120 = 97.50
22.50 = 1.50x . . . . . . . add 1.50x -97.50
15 = x . . . . . . . . . . . . . . divide by 1.50
15 10-oz boxes were sold.
Answer:
The answer is D) 15 on edge
(have a nice day and brainiest pls)
Step-by-step explanation:
through: (1, 2), slope = 2
Answer:
y=2x+2
Step-by-step explanation:
Answer: y = 2x
Step-by-step explanation:
y=mx+b
m is the slope. so if the slope is 2 we can fill in 2 for m.
y = 2x + b
now we are going to plug in the point they gave us (1, 2) to find b.
1 is the x coordinate of the point and 2 is the y coordinate. so we put 1 in for x and 2 in for y.
2 = 2(1) + b
2 = 2 + b
b = 0
so our equation is y = 2x + 0, or y = 2x
75 POINTS AND BRAINLIEST IF ITS CORRECT!!!
Answer: The first and last table.
As the x increases by 2, the y goes down by 1, so both tables have the same rate of change which means they are the same function.
Tables 1 and 5 are equal.
Given are 5 tables in x and y with two values each.
We are to find out which two represent the same function.
As for every function, two points are given.
Let us compare the slopes of each function.
Slope=change in y coordinate/change in x coordinate
Table Slope
I -0.5
2 -0.5
3 -0.5
4 1
5 -0.5
Table 4 is eliminated now.
Though slopes are the same for 1 and 2,f(4) =8 and 5 different . Hence I and II cannot be the same. Similarly for 2 different values are there in table 3,4,5. Hence 3,4,5 cannot be pairwise equal.
We find that table I and table 5 have the same slope. Also when pairwise taken, (4,8) and (2,9) slope = -0.5
So table I = table 5
Hope this helps... Stay safe and have a great day/night!!! :D
Given the system of equations, what is the solution?
2x + y = -1
x - y = -5
{(-2, 3)}
{(-8, -3)}
{(2, 7)}
Answer:
Its b trust me
Step-by-step explanation:
I did the work lol
Answer:
y = 9/2 or 4.5
Step-by-step explanation: hope this helps :)
x-y= -5 So what you do here is isolate the variables
+y +y
x = -5+y
After you do this you input the equation as x
2x+y = -1
2(-5+y) = -1
-10 + 2y = -1
+ 10 +10
2y = -9
/2 /2
y = 9/2 or 4.5
Some doctors recommend that men drink 3 liters of water every day. There are approximately 33.814fluid ounces in 1 liter. Which measurement is closest to the number of fluid ounces in 3 liters?
plz hurry good review in exchange
Answer:
101 fl oz
Step-by-step explanation:
Answer:
101fl
Step-by-step explanation:
a line passes through the point (-1,5) and the point (3,5), what is the equation of the line?
Answer:
8
Step-by-step explanation:
took the test
have a nice day
mark brainlist plzzzzz
You bought a can of black beans last week that cost $1.34. This week, the store advertised a sale where 5 cans of beans cost $6.00. You bought one can of beans this week as well. Find the cost per can, and determine how much less the can of beans cost this week compared to last week.
Answer:
1. $1.2
2. $0.14
Step-by-step explanation:
Step one:
given data
Black beans last week that cost $1.34
Step two:
This week's price
5 cans of beans cost $6.00
The cost per can is
= 6/5
=$1.2
The difference in price
=1.34-1.2
= $0.14
a copy machine can copy a report in 30 min. when a second copy machine is used at the same time, the copying can be done in 18 min. how long would it take the second copy machine to do the copying alone?
Answer:
Step-by-step explanation:
A copy machine can copy a report in 30 mins. When a second copy machine is used at the same time, the copying can be sone in 18 min. How long would it take the second copu machine to do the copying alone?
i have:
x=30
x+y=18
that would be -12..not right?
The time taken that it take the second copy machine to do the copying alone should be considered as the 11.25 minutes.
Calculation of the time taken:Let we assume x be the time required at the time when using both machines.
Let us assume the completed job = 1
we know that
copy machine 1 will do [tex]x/30[/tex] of the job
and
copy machine 2 will do [tex]x/18[/tex] of the job
So, it can be like
[tex]\frac{x}{30} + \frac{x}{18} = 1[/tex]
So,
18x + 30x = 540
48x = 540
x = 11.25 minutes
hence, The time taken that it take the second copy machine to do the copying alone should be considered as the 11.25 minutes.
Learn more about time here: https://brainly.com/question/24388291
A small moving box has a volume of 2304 inches cubed and length of 16 inches. The box's width and height are the same. Write the equation that models the volume of the box. Let x represent the width. Solve the equation. Find the width and height of the box.
Answer:
V = 16x²
Width = 12in
Height = 12in
Step-by-step explanation:
Volume of the box is expressed as;
V = Length *Width * height
Given
Length = 16in
Width = x
Height = x
The volume of the box will be expressed as;
V = 16 * x * x
V = 16x² (This gives the required equation)
To get x:
We are given
V = 2304in³
Substitute;
2304 = 16x²
x² = 2304/16
x² = 144
x= √144
x = 12
Hence the width and the height are both 12inches since they are the same.
For the sma
What best describes the relationship between line 6x - 2y = 1 and the line x + 3y = 12?
is it parallel, perpendicular, or neither?
Both the lines are perpendicular lines.
What is Equation of line?The equation of line passing through the points (x₁ , y₁) and (x₂, y₂) with slope m is defined as;
y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
The equation of lines are,
⇒ 6x - 2y = 1 and x + 3y = 12.
Now,
Since, The equation of lines are,
⇒ 6x - 2y = 1 and x + 3y = 12.
Hence, Find the slopes of the lines as;
⇒ 6x - 2y = 1
⇒ 2y = 6x - 1
⇒ y = 3x - 1/2
⇒ m₁ = dy/dx = 3
And, From second line,
⇒ x + 3y = 12.
⇒ 3y = - x + 12
⇒ y = - 1/3x + 4
⇒ m₂ = dy/dx = - 1/3
Clearly, We get;
⇒ m₁ m₂ = 3 × - 1/3
= - 1
Thus, Both the lines are perpendicular lines.
Learn more about the equation of line visit:
https://brainly.com/question/18831322
#SPJ1
Evaluate the expression. 7 + 8 x 4 - 6 ÷ 2
Answer:
36
Step-by-step explanation:
PEMDAS
7+(8)(4)-6/2
Answer:
36
Step-by-step explanation:
7+ 8 * 4-6/ 2
7 + 8( 8*4) - (6/2)
Multiple: 8 * 4 = 32
Add: = 7 + 32 = 39
Divide: 6 / 2 = 3
Subtract: 39 - 3 = 36
Please help on 5 and 6
Jessica is selling books during the summer to earn money for college.
6.01 as a improper fraction
Answer:
601/100
Step-by-step explanation:
Can somebody help me with this question, my brain has evaporated.
Answer:
9.42m
Step-by-step explanation:
You have to find the circumference using C=2πR. We know that the radius =4 meters so then we can insert it into the formula to get the circumference which equals 8π. Then we divide 24m² by 8πm and get 9.42m.
Pls answer first one to get it right and show work will get brainliest thanks :3
Answer:
x=−12/5
Step-by-step explanation:
2(1.5x−2)=−0.5(−4x−32)
Step 1: Simplify both sides of the equation.
−2(1.5x−2)=−0.5(−4x−32)
(−2)(1.5x)+(−2)(−2)=(−0.5)(−4x)+(−0.5)(−32)(Distribute)
−3x+4=2x+16
Step 2: Subtract 2x from both sides.
−3x+4−2x=2x+16−2x
−5x+4=16
Step 3: Subtract 4 from both sides.
−5x+4−4=16−4
−5x=12
Step 4: Divide both sides by -5.
−5x−5
=12/−5
x=−12/5
I’m please help asap due soon
need help pls answer it
Answer:
1 5/6 or answer C
Step-by-step explanation:
First: Parenthesis 4/5-1/4 or 11/20x 1/2 is 11/40
Bottom: 1/2*4/5 is 2/5 - 1/4 which is 3/20
11/40 *20/3
11/6 or 1 5/6 which would be answer C.
Hope this helps!
Happy Holidays!
Answer:
C
Step-by-step explanation:
top 4/5-1/4 or 11/20x 1/2 = 11/40
bottom 1/2*4/5 is 2/5 - 1/4 = 3/20
Diane will spend more than $31 on gifts. So far, she has spent $18. What are the possible additional amounts she will spend?
Use c for the additional amount (in dollars) Diane will spend.
Write your answer as an inequality solved for c.
Answer:
13
Step-by-step explanation:
31-18=13
Cookies are sold in the lunchroom for 1.50. Ana wants to buy cookies for a group of her friends. If she has 20 dollars,which inequality can be solved to show the number of cookies she can buy?
the drama club at creative high school is putting on a performance to raise money for new costumes since they do not have costumes they will $110 to rent costumes they plan on charging $5.50 per ticket
Answer:
this makes no sense where the ACUTAL QUASTION no
Step-by-step explanation:
They need to sell 50 tickets.
Given
The drama club at Creative High School is putting on a performance to raise money for new costumes.
Since they do not have costumes, they will pay $110 to rent costumes.
They plan on charging $5.50 per ticket.
We have to determine
The equation can be used to find the number of tickets, t, they need to sell in order to raise $275.
The charger per ticket is $5.50.
Therefore,
The equation can be used to find the number of tickets, t, they need to sell in order to raise $275.
[tex]\rm t = \dfrac{Amount\ of \ tickets}{Price \ of \ ticket}\\\\t = \dfrac{275}{5.50}\\\\t =50[/tex]
Hence, they need to sell 50 tickets.
To know more about the equation click the link given below.
https://brainly.com/question/18378081
I WILL PUT MANY POINTS ANSWER PROPERLY OR ELSE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Zoe took a total of 28 quizzes over the course of 4 weeks. After attending 6 weeks of school this quarter, how many quizzes will Zoe have taken in total? Assume the relationship is directly proportional.
? quizzes
I HAVE MORE QUESTIONS SO DONT ANSWER AND LEAVE
Answer:
42
Step-by-step explanation:
Given the related graph for each equation, determine the graph that represents a quadratic equation that has one real solution.
Answer:
The answer would be D. 0=2(x-1)squared
Step-by-step explanation:
Answer:
d
Step-by-step explanation:
Please help I’ll give you brainliest
Jim's timecard is below. For each day figure out the total hours he
worked (a-e), and find the total number of hours he worked for the week. Please help
TOTAL
OUT
4:30
5:00
a.
b.
Monday
Tuesday
Wednesday
Thursday
Friday
IN
8:30
8:30
8:30
8:00
8:30
OUT
11:30
12:30
11:30
12:00
11:30
IN
12:30
1:00
12:00
12:30
12:30
C.
d.
6:00
6:30
7:30
Total
e.
f.
Answer:
a. 7
b 8
c 9
d 10
e 10
f 44
Step-by-step explanation:
Pls answer I need help
Answer:
it would be 8\9 if you divide
Step-by-step explanation: