1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Masja [62]
3 years ago
6

4 gallons of gasoline at QT cost $16.80. What was the price per gallon at QT?

Mathematics
2 answers:
lidiya [134]3 years ago
6 0
It would be 4 dollars and 20 cents a gallon
Serggg [28]3 years ago
6 0
One gallon costs $4.20
You might be interested in
A sample of 64 was taken from a population, with the mean of the sample being 119 and the standard deviation of the sample being
Fofino [41]
We have the sample size, sample mean and the sample standard deviation. Since the population standard deviation is not know, we will use t-distribution to find the confidence interval.

The critical t value for 95% confidence interval and 63 degrees of freedom is 1.998.

The 95% confidence for the population mean will be:

(119-1.998 *\frac{16}{ \sqrt{64} } ,119+1.998 *\frac{16}{ \sqrt{64} }) \\  \\ 
=(115.004, 122.996) \\ \\=(115,123)

Thus, the 95% confidence interval for the population mean will be (115,123)

So, option A is the correct answer
6 0
3 years ago
Find the number that makes the ration equivalent to 77:99
Leno4ka [110]
Each are divisible by 11 so the ratio equivalent would be 7:9
7 0
3 years ago
Which statement compares the two numbers correctly?
Pie

Hey there! We are given two decimal numbers to compare.

52.311 and 52.31

These two numbers are similar except that 52.311 has another 1 in while 51.31 doesn't.

Keep in mind that 52.31 can also refer to 52.310

So we are comparing 52.311 and 52.310

Since 1 is greater than 0.

52.311 is greater than 52.31 (52.311 > 52.31)

Let me know if you have any questions!

Topic: Decimal Numbers

6 0
2 years ago
In Triangle XYZ, measure of angle X = 49° , XY = 18°, and
marissa [1.9K]

Answer:

There are two choices for angle Y: Y \approx 54.987^{\circ} for XZ \approx 15.193, Y \approx 27.008^{\circ} for XZ \approx 8.424.

Step-by-step explanation:

There are mistakes in the statement, correct form is now described:

<em>In triangle XYZ, measure of angle X = 49°, XY = 18 and YZ = 14. Find the measure of angle Y:</em>

The line segment XY is opposite to angle Z and the line segment YZ is opposite to angle X. We can determine the length of the line segment XZ by the Law of Cosine:

YZ^{2} = XZ^{2} + XY^{2} -2\cdot XY\cdot XZ \cdot \cos X (1)

If we know that X = 49^{\circ}, XY = 18 and YZ = 14, then we have the following second order polynomial:

14^{2} = XZ^{2} + 18^{2} - 2\cdot (18)\cdot XZ\cdot \cos 49^{\circ}

XZ^{2}-23.618\cdot XZ +128 = 0 (2)

By the Quadratic Formula we have the following result:

XZ \approx 15.193\,\lor\,XZ \approx 8.424

There are two possible triangles, we can determine the value of angle Y for each by the Law of Cosine again:

XZ^{2} = XY^{2} + YZ^{2} - 2\cdot XY \cdot YZ \cdot \cos Y

\cos Y = \frac{XY^{2}+YZ^{2}-XZ^{2}}{2\cdot XY\cdot YZ}

Y = \cos ^{-1}\left(\frac{XY^{2}+YZ^{2}-XZ^{2}}{2\cdot XY\cdot YZ} \right)

1) XZ \approx 15.193

Y = \cos^{-1}\left[\frac{18^{2}+14^{2}-15.193^{2}}{2\cdot (18)\cdot (14)} \right]

Y \approx 54.987^{\circ}

2) XZ \approx 8.424

Y = \cos^{-1}\left[\frac{18^{2}+14^{2}-8.424^{2}}{2\cdot (18)\cdot (14)} \right]

Y \approx 27.008^{\circ}

There are two choices for angle Y: Y \approx 54.987^{\circ} for XZ \approx 15.193, Y \approx 27.008^{\circ} for XZ \approx 8.424.

6 0
3 years ago
If theta is an acute angle and sin=1/2 , then cos theta =
lilavasa [31]
\pi /6 is the only acute angle whose sin = 1/2. Therefore, cos (\pi /6) = \sqrt{3} /2
7 0
3 years ago
Other questions:
  • Find the difference between (-1 1/3), (-4 2/5) on a number line
    9·1 answer
  • Which of the following is the solution to the following system of inequalities? Let the green region represent the answer region
    6·2 answers
  • Solve.<br>2x + 8y = 18<br>y= -x + 6<br>Enter your answer, in the form (x, y), in the boxes.​
    7·1 answer
  • Can someone help me PLEASE
    12·1 answer
  • X+2=6x-18<br> Please help, i need to solve for x, and this is really confusing for me.
    15·2 answers
  • Please help!!! :)))))
    9·2 answers
  • Help???? I can’t figure this out
    6·1 answer
  • WILL GIVE BRAINLIST IF U CAN SOLVES THIS PROBLEMhbigbg75585t85g7b7g5g7gghghgh75hg74h8t58gh8h54th784t75ty84t7y974t+ggnonthn4nhhhn
    6·1 answer
  • Find the Volume of the cone radius 4 cm and height 9 cm
    10·2 answers
  • Another day, another math problem 3
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!