Answer:
x = -1
y = 7
Step-by-step explanation:
We have a system of equations and are asked to solve using substitution.
y = -7x
2x - y = -9
Since we have an equation for y by itself, we can plug the first equation into the second.
2x - (-7x) = -9
Distribute :
(-(-7x))
2x + 7x = -9
Add like terms :
9x = -9
Divide 9 by both sides to get x :
x = -1
Now that we know x, we can plug it into the first equation to find y :
y = -7(-1)
y = 7
8. A ship leaves port at 9:00 a.m. and has a bearing of N 70° W. The ship sails
at 18 knots. How many nautical miles north and how many nautical miles
west will the ship have traveled by 1:00 p.m.? Draw a picture!
Round to the nearest tenth.
9514 1404 393
Answer:
24.6 Nm north67.7 Nm westStep-by-step explanation:
In x-y coordinates, the direction is 70° CCW from 90° (north), so is 160° from the +x axis. In 4 hours at 18 Nm/h, the ship will travel 4×18 Nm = 72 Nm.
The coordinates in the x-y plane can be found to be ...
72(cos(160°), sin(160°)) ≈ (-67.7, 24.6)
The ship traveled 67.7 nautical miles west and 24.6 nautical miles north from the port.
which shapes have at least 1 right angle? Choose all that are correct.
Answer:
The Pink square, Green Rectangle, and the Orange figure
Step-by-step explanation:
The only one I'm not to sure about is the trapezoid, but you can rule out all the others because there is no right angle. Hope this helps!
The Pink square, Green Rectangle, and the Orange figure have at least 1 right angle.
What is rectangle?
In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles. It can also be defined as: an equiangular quadrilateral, since equiangular means that all of its angles are equal; or a parallelogram containing a right angle.
What is square?
A rectangle with four sides of equal length is a square.
What is right angle?
A right angle is an angle that is exactly equal to 90 degrees in measure.
According to question, we have to find which shapes have at least 1 right angle.
In the given figure, we can see that the pink square, green Rectangle, and the orange figure have at least 1 right angle or have [tex]90[/tex] degree in them.
Hence, we can conclude that the Pink square, Green Rectangle, and the Orange figure have at least 1 right angle.
Learn more about right angle here:
https://brainly.com/question/3770177?referrer=searchResults
#SPJ2
Add the polynomials: (3x+3x2-4x+5) + (x3-2x2+x-4)
Answer......
x^2+3x+1
Answer:
The answer is x^2+3x+1
Step-by-step explanation:
can u plzz find me a length of adjacent
Answer:
There is no answer
My Logic:
The picture does not specify the degree of angle for each corner, nor can i understand what the random "a" is. also the side all the way to the left has an un-readable number.
-4 ( ) = -16
-16= -8 ( )
If y varies directly as x
and x= 4 when y = 14,
find y when x = -10.
Can someone help me with this math problem?
4x+10=22
Answer:
x=3
Step-by-step explanation:
4x+10=22
Subtract 10 from both sides.
4x=22−10
Subtract 10 from 22 to get 12.
4x=12
Divide both sides by 4.
x= 12/4
Divide 12 by 4 to get 3.
x=3
whats is 48p3m4n ÷ 12pmn4
Answer:
Step-by-step explanation:
[tex]\frac{a^{m}}{a^{n}}=a^{m-n}\\\\ a^{-m}=\frac{1}{a^{m}}\\\\\frac{48p^{3}m^{4}n}{12pmn^{4}}=4*p^{3-1}*m^{4-1}n^{1-4}\\\\=4p^{2}m^{3}n^{-3}\\\\=\frac{4p^{2}m^{3}}{n^{3}}[/tex]
I really need help with this plz
Answer:
n<4
It goes to the left
Step-by-step explanation:
Let's solve your inequality step-by-step.
6n+7<31
Step 1: Subtract 7 from both sides.
6n+7−7<31−7
6n<24
Step 2: Divide both sides by 6.
6n/6<24/6
n<4
PLEASE PLEASE PLEASEEE HELP ME
Jamal needs to purchase a countertop for his kitchen. Jamal measured the countertop as 5 ft. The actual measurement is 4.5 ft. What is Jamal’s percent error?
A) 5%
B) 11%
C) 45%
D) 50%
Answer:
percent error is 11.1% (which agrees with answer B)
Step-by-step explanation:
The discrepancy (difference) between the measurement and the real length was: 5 - 4.5 = 0.5 ft
Then the percent difference is calculated as:
(difference / real value) * 100 = ( 0.5 / 4.5ft ) * 100 = 11.1%
a homeowner has just installed a swimming pool with a capacity of 3.5 x 10⁴ gallons.of the pool is initially empty, how many hours will it take to fill it using only a garden hose that delivers 630 gallons of water per hour
Using proportions, it is found that it will take 55.6 hours to fill the poll.
What is a proportion?A proportion is a fraction of total amount, and the measures are related using a rule of three.
In this problem, in one hour, 630 gallons of water are delivered. How many hours are going to take to deliver 3.5 x 10⁴ gallons = 35000 gallons?
The rule of three is:
1 hour - 630 gallons
x hours - 35000 gallons
Applying cross multiplication:
[tex]630x = 35000[/tex]
[tex]x = \frac{35000}{630}[/tex]
[tex]x = 55.5[/tex]
It will take 55.6 hours to fill the poll.
You can learn more about proportions at https://brainly.com/question/24372153
The hours it would take to fill the swimming pool is 55.6 hours.
What does division mean?
Division is the process of dividing a number into equal parts using another number. The sign used to denote division is ÷.
How many hours would it take to fill the swimming pool?Number of hours = capacity of the swimming pool / capacity of the hose
3.5 x 10^4 / 630
35,000 / 650 = 55.6 hours
To learn more about division, please check: https://brainly.com/question/13281206
Help me pls pls pls pls
Eight bricks are laid end to end along the edge of a flower bed. Each brick is 1 1/2 inches long. How long is the row of bricks, in inches?
Answer:
12 inches
Step-by-step explanation:
What information is useful?
Each brick is: 1 1/2 inches long.
There are 8 bricks used.
Let's multiply 1 1/2 x 8 = 12 inches.
You can convert into other metrics but depending on your question it is in inches.
find the value of x. round to the nearest tenth
If four bicycle lamps cost £24 how much would seven lamps cost?
The price of a four-star dinner was $100 two decades ago. A report says that a dinner is 250% of what it was 20 years ago, how much would it be
wheoemslaowoaaueiedrs
Fill in the blank.
(3 + 8) * 4 = (3 * _ ) + (8 x 4)
Answer:
3
Step-by-step explanation:
seaerch it up
Answer: 4
Step-by-step explanation:
(3+8)*4=(3*_)+(8*4)
11*4=(3*_)+(8*4)
44=(3*_)+(8*4)
44=(3*_)+32
44-32=12
3*_=12
(3+8)*4=(3*_4_)+(8*4)
What does x equal
F.x=7
G.x=-7
H.x=13
J.x=-13
2.' Which number has more factors: 125 or 200?
Answer:
200
Step-by-step explanation:
factors of 125 are 1, 5, 25, 125
factors of 200 are 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100 and 200.
Based on the number of factors of the two numbers, the number with more factors is 200.
The factors of 125 are:
1525125The factors of 200 are:
1245810254050100200The factors of 200 are 12 in total while that of 125 are only 4.
In conclusion, 200 has more factors than 125.
Find out more about factors at https://brainly.com/question/596862.
Please help me ASAP i will give brainiest
Answer:
The answer is B
Step-by-step explanation:
Since parallelograms have a total of 360 degrees, you just have to add the 115 and 64 to get 179. The 124 is completely irrevant in this entire problem. So then 360-179=181. It is B because y is an acute angle, meaning that the value HAS to be under 90 degrees, and only B has y as an acute angle measurement.
Answer:
B bro
Step-by-step explanation:
What is the surface area of this rectangular pyramid?
Answer:
i believe the answer is 266.08
Step-by-step explanation:
On your own sheet of paper, use long division to find the quotient of 347 ÷ 4.
What is the remainder?
Answer:
86 Remainder 3
Step-by-step explanation:
What is 347 Divided by 4?
We provide you with the result of the division 347 by 4 straightaway:
347 divided by 4 = 86.75
The result of 347/4 is a terminating decimal with 2 digits to the right of the decimal point.
347 divided by 4 in decimal = 86.75
347 divided by 4 in fraction = 347/4
347 divided by 4 in percentage = 8675%
Note that you may use our state-of-the-art calculator above to obtain the quotient of any two integers or decimals, including 347 and 4, of course. Repetends, if any, are denoted in ().
The conversion is done automatically once the nominator, e.g. 347, and the denominator, e.g. 4, have been inserted. No need to press the button, unless you want to start over.
Give it a try now with a similar division by 4.
What is the Quotient and Remainder of 347 Divided by 4?
Here we provide you with the result of the division with remainder, also known as Euclidean division, including the terms in a nutshell:
The quotient and remainder of 347 divided by 4 = 86 R 3
The quotient (integer division) of 347/4 equals 86; the remainder (“left over”) is 3.
347 is the dividend, and 4 is the divisor.
In the next section of this post you can find the frequently asked questions in the context of three hundred and forty-seven over four, followed by the summary of our information.
Three Hundred And Forty-Seven Divided by Four
You already know what 347 / 4 is, but you may also be interested in learning what other visitors have been searching for when coming to this page. The FAQs include, for example:
What is 347 divided by 4?
How much is 347 divided by 4?
What does 347 divided by 4 equal?
If you have read our article up to this line, then we take it for granted that you can answer these FAQs and similar questions about the ratio of 347 and 4.
347 Divided by 4
Observe that you may also locate many calculations such as 347 ÷ 4 using the search form in the sidebar. The result page lists all entries which are relevant to your query.
Give the search box a go now, inserting, for instance, three hundred and forty-seven divided by four, or what’s 347 over 4 in decimal, just to name a few potential search terms.
.To sum up, 347/4 = 86.75. The number has 2 decimal places. As division with remainder the result of 347 ÷ 4 = 86 R 3.
can someone help? i really don’t u understand. question is in the picture
Hey!
So what it's asking for is the slope of the line. You can figure this out by finding two solid points on the line, such as (0,-1) and (4,2).
Knowing that these are two solid points, you can use the Rise/Run method to get the answer. The rise is how many units the slope rises (+) or falls (-) when getting to the next point. The run is how many units to the left or right it goes.
By following this, the slope is 3/4
What is the slope of the line that passes through (5,-1) and (8,2)
Answer:
m=1 (slope)
Step-by-step explanation:
m= change in y / change in x
m= (y2 - y1) / (x2 - x1)
m= (2-(-1))/ (8-(5))
simplify
m= 3/3 = 1
At a basketball game, a team made 53 successful shots. They were a combination of 1- and
2-point shots. The team scored 90 points in all. Write and solve a system of equations to find the
number of each type of shot.
There were
2-point shots and 1-point shots.
Answer:
Let x be the number of 1 point shots, and y be the number of 2 point shots.
So the system is:
x+y=53
1x+2y=90
We can solve this system by substitution.
x+y=53, x=53-y
x+2y=90
53-y+2y=90
53+y=90
y=37
That means, the team made 37 two point shots.
If the team made 37 two point shots, the team scored 37 x 2, or 74 points from 2 point shots, meaning that it made 16 one point shots.
So the correct answer is: 16 one point shots, 37 two point shots.
Let me know if this helps!
On the graph of f(x)=sinx and the interval [0,2π), for what value of x does f(x) achieve a minimum? Choose all answers that apply.
Select all that apply:
0
π/4
π/2
π
3π/2
Answer:
3π/2
Step-by-step explanation:
See attached graph
Which of the following are characteristics of the cubic parent function? Select all that apply .
A. It passes through quadrants and II.
B. It has a domain and range of all real numbers.
C. It is symmetric about the y-axis.
D. It goes through the origin.
E. It is a straight line.
9514 1404 393
Answer:
B, D
Step-by-step explanation:
The cubic function is plotted in the attachment. It is a curve found in quadrants I and III, so is not symmetric about the y-axis.
Its domain and range are all real numbers, and it passes through the origin.
Answer:
Step-by-step explanation:
The temperature was recorded at the same time each day,
a)
Which temperature was the warmest?
b)
Which temperature was the coldest?
c)
How much colder was it on Thursday than on Saturday?
d)
On Sunday the temperature was 5°C lower than on Saturday.
What was the temperature on Sunday?
Answer:
a) The warmest temperature will be the one where the value of the temperature is the largest, in the table we can see that the largest temperature is 3°C on Saturday.
Then the largest temperature was on Saturday, and it was 3°C
b) Which temperature was the coldest?
Now we need to look at the smallest temperature (or the largest negative temperature). In the table we can see that the smallest temperature is -6°C on Friday.
Then the smallest temperature is -6°C.
c) On Thursday the temperature was -1°C
On Saturday the temperature was 3°C
The difference between the temperatures is:
-1°C - (3°C) = -4°C
This means that Thursday was -4°C colder than on Saturday.
d) On Sunday, the temperature was 5°C lower than on Saturday.
On Saturday the temperature was 3°C, then the temperature on Sunday is:
T = 3°C - 5°C = -2°C
The temperature on Sunday is -3°C.
Use the figure below to answer the questions.
Tropical islands have many rainstorms during the afternoon heat. One particular tropical island has a 79% chance of a
rainstorm on any given afternoon. Abraham is planning a weeklong stay on this tropical island. Let X represent the
number of days there is an afternoon tropical storm that week. What are the mean and standard deviation of X?
O v. = 1.47,0, = 1.16
Own=3.5, 0x = 1.16
Oy.=5.53.0. = 1.08
O x =7,0, = 3.5
Answer:
C
Step-by-step explanation:
I got it right on Edge.