Answer:
Rate of jet in still air = 750 mph
Rate of wind = 180 mph
Step-by-step explanation:
Let the rate of jet in still air = [tex]u[/tex] mph
Let the rate of air = [tex]v[/tex] mph
So, Rate of jet against the wind = [tex](u-v)[/tex] mph
Rate of jet with the wind = [tex](u+v)[/tex] mph
Formula for Speed/Rate is given as:
[tex]Speed = Distance \times Time[/tex]
Distance traveled in 3 hours against the wind = 1710 miles
Distance traveled in 4 hours against the wind = 3720 miles
[tex]u-v=\dfrac{1710}{3}\\\Rightarrow u-v=570..... (1)[/tex]
[tex]u+v=\dfrac{3720}{4}\\\Rightarrow u+v=930......(2)[/tex]
Adding (1) and (2):
[tex]2u=1500\\\Rightarrow u=750\ mph[/tex]
By equation (1):
[tex]750 - v =570\\\Rightarrow v =180\ mph[/tex]
Rate of jet in still air = 750 mph
Rate of wind = 180 mph
Graph the line with slope 1/4 and y intercept -2
Answer:
y= 1/4x -2
Step-by-step explanation:
Y=mx+b
m is the slope
b is the y intercept
The equation of line is y= 1/4x -2 .
What is slope?A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the
change in y coordinate with respect to the change in x coordinate as,
m = Δy/Δx
where, m is the slope
Given:
slope = 1/4 and y intercept = -2
Using slope- intercept form
y= mx + b
y= 1/4x + (-2)
y= 1/4x -2
Learn more about slope here:
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Determine the intercepts of the line.
x-intercept(_,_)
y-intercept(_,_)
Answer:
the x-intercept is (-10, 0) the y-intercept is (-45, 0)
Answer:
X intercept is (-10,0)
Y intercept is (0,-40.5)
Step-by-step explanation:
Hope this helps.
For khan academy. Need answer immediately. Explain if you can
Answer:
The answer is B
Student council is voting which elective classes should be offered at the middle school. the choices are Band, Art, and Spanish. Art received twice as many votes as Band. Spanish received 20 more votes than Art. 190 students voted total.
Answer:
34 people voted for band 68 people voted for art and 88 people voted for Spanish this help
Step-by-step explanation:
Devin has a furniture store. He sold a shoe rack recently for 3450. It cost him just to make the rack What is Devin's profit percent ?
Which of the following is the solution for 6x + 3 ≤ 27
Answer:
x ≤ 4
Step-by-step explanation:
6x + 3 ≤ 27 subtract 3 both sides
6x ≤ 24 divide 6 both sides
x ≤ 4 There's your answer
What is the length of DE?
A. 5
B.7
C.6
D.8
Answer:
I think it's 5
Step-by-step explanation:
12-8=4 so 9-4=5 but I could be missing something
What is the answer to this question?
Answer:
≈ 3.9 miles
Step-by-step explanation:
The third angle in the triangle is
180° - (53 + 78)° = 180° - 131° = 49°
Using the Sine rule in the triangle with distance from 2 being x, then
[tex]\frac{3}{sin49}[/tex] = [tex]\frac{x}{sin78}[/tex] ( cross- multiply )
x × sin49° = 3 × sin78° ( divide both sides by sin49° )
x = [tex]\frac{3sin78}{sin49}[/tex] ≈ 3.9 ( to the nearest tenth )
2/-3 divided by -1 2/7 =
pls explain the answer
Answer:
[tex]\frac{14}{27}[/tex]
Step-by-step explanation:
[tex]-1\frac{2}{7} = -\frac{9}{7}[/tex] Plug -9/7 in: [tex]-\frac{2}{3}[/tex] ÷ [tex]-\frac{9}{7}[/tex] -2/3 ÷ -9/7 = 2/3 ÷ 9/7 = 2/3 × 7/9[tex]\frac{2}{3}[/tex] × [tex]\frac{7}{9} = \frac{14}{27}[/tex]I hope this helps!
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
[tex] \frac{2}{ - 3} \div (- 1 \frac{2}{7}) = \\ [/tex]
[tex] - \frac{2}{3} \div ( - \frac{ 7}{7} - \frac{2}{7} ) = \\ [/tex]
[tex] - \frac{2}{3} \div ( \frac{ - 7 - 2}{7} ) = \\ [/tex]
[tex] - \frac{2}{3} \div ( - \frac{9}{7} ) = \\ [/tex]
Negatives simplifies
[tex] \frac{2}{3} \div \frac{9}{7} = \\ [/tex]
[tex] \frac{2}{3} \times \frac{7}{9} = \\ [/tex]
[tex] \frac{14}{27} \\ [/tex]
Done...
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can someone pls help this is 6th grade math i will give brainliest
Answer:
the answer is D
Step-by-step explanation:
Can someone please help me with this one please
Answer:
Step-by-step explanation:
the answer is 3
What is the slope of the line parallel to 7x + 4y = -16?
Answer:
The slope of the line that is parallel to the given line is [tex]\frac{-7}{4}[/tex]
Step-by-step explanation:
Parallel lines have the same slopes and different y-intercepts
The slope of the line who has an equation ax + by = c is m = [tex]\frac{-a}{b}[/tex]
Let us use these rules to solve the question
∵ The equation of a given line is 7x + 4y = -16
→ Compare it with the form of the equation above
∴ a = 7 and b = 4
∵ The slope of the line = [tex]\frac{-a}{b}[/tex]
∴ The slope of the line = [tex]\frac{-7}{4}[/tex]
∵ Parallel lines have the same slope
∴ The slope of the line that is parallel to the given line is [tex]\frac{-7}{4}[/tex]
caculate the average speed from points D to point E
Answer:
20 seconds
Step-by-step explanation:
30 is where the E point is at while 10 is where D-point at.subtract these 2 and youll get 20
True or False: X=3 is the solution to 2x+10/5=4.
1. True
2. False
Answer:
Step-by-step explanation:
False
Which values of m and b will create a system of equations with no solution? Select two options.
y = mx + b
y = –2x + A system of equations. y equals m x plus b. y equals negative 2 x plus StartFraction 3 over 2 EndFraction.
A coordinate grid with a line labeled y equals negative 2 x plus StartFraction 3 over 2 EndFraction and passes through the points (9, 1.5) and (1, 0.5).
m = –3 and b = negative StartFraction 2 over 3 EndFraction.
m = –2 and b = m equals negative 3 and b equals negative StartFraction 1 over 3 EndFraction.
m = 2 and b = negative StartFraction 2 over 3 EndFraction.
m = m equals StartFraction 3 over 2 EndFraction and b equals negative StartFraction 2 over 3 EndFraction and b = m equals negative StartFraction 3 over 2 EndFraction and b equals negative StartFraction 2 over 3 EndFraction
m = -2 and b = m equals negative 2 and b equals negative StartFraction 2 over 3 EndFraction
Answer:
Step-by-step explanation:
y = –2x + A system of equations. y equals m x plus b. y equals negative 2 x plus StartFraction 3 over 2 EndFraction.
Answer:
option 3 is best answer.
Step-by-step explanation:
(-3x + 7) + (-6x + 9) =
pls help :)
Answer:
-9x+16
Step-by-step explanation:
-3x+7+-6x+9=-9x+16
-3-6= (tecnectly adding but put negative sign with ur answer!)
7+9=16
Put together and Done!
Hope helps :D
Divide. Round your answer to the nearest whole number.
91,543 = 5 =
Answer:
i assume you mean divide so its 18308
Step-by-step explanation:
In 2018, Gretal earned $32 000.
(i) She paid tax of 24% on these earnings.
Work out the amount she paid in tax in 2018
Gretal paid $7680 on tax in 2018.
What is a percentage?"A percentage is a ratio of a number to 100. The symbol % is used to indicate a percentage."
Given
Earning = 32000
Tax paid = 24%
Amount paid on tax = [tex]32000[/tex] × [tex]\frac{24}{100}[/tex]
= $7680
Hence, she paid $7680 on tax.
Learn more about percentage here
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PLEASE HELP ILL GIVE BRAINLIEST. Which graph displays a rate of change of 2.5?
fy
Ay
4
2
2
x
X
2
4
2
-2
4
2.
-4
-4
4
-2.
2
2
2
-4
Step-by-step explanation:
i can't see the graph but I have done it before it is middle one
hep please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Hm, D would equal either 5 or 6.
Answer: d=3
Step-by-step explanation:because if u plug it in that will be grater
please help asap, will mark brainliest :))
Answer:
26
Step-by-step explanation:
Square the sides you know (A and B) Since you are finding side C the hypotenuse go by these steps:
Square the given sides.Add the sides togetherFind the square root of the sum.The square root of the sum is the side length of the hypotenuse.
[tex]10^{2} = 100\\24^{2} = 576[/tex]
100 + 576 = 676
[tex]\sqrt{676} = 26[/tex]
will mark brainliest
Write an expression for the perimeter of the triangle shown below:
A triangle is shown with side lengths labeled 2.3x plus 14, 2x, and negative 0.2x plus 15.
4.1x + 29
4.1x − 29
4.5x + 29
4.5x − 29
PLEASE HELP!!!! GIVING BRAINLIEST!!!
Identify the missing input value.
Answer:
The answers are 34 on the in side and 57 on the out side
Step-by-step explanation:
This is because if you subtract 4 from 9, you will get 5. when you subtract 4 from 19, you will get 15.
I hope this helps
Answer:
In: 33 Out: 29
In: 62 Out: 58
Step-by-step explanation:
Lets find the rate of change first;
[tex]\frac{y^{2}-y^{1} }{x^{2}-x^{1} }=\frac{15-5}{19-9}=\frac{10}{10}=1[/tex]
is y=x/4 proportional or non proportional?
Answer:
i may be wrong but i thinks its proportional
Step-by-step explanation:
she remaining amount Lily has yet to pay Megan is $. Lily owed Megan $129.42. So far, she has paid Megan $32.56.?????
Answer:
129.42 - 32.56 = 96.86$
A phone company charges a base fee of $12 per month plus an additional charge per minute. The monthly phone cost C can be represented by this equation: C=12+a⋅m, where a is the additional charge per minute, and m is the number of minutes used.
Which equation can be used to find the number of minutes a customer used if we know a and C?
A
m=C−12a
B
m=(C−12)−a
C
m=C−12a
D
m=Ca−12
Answer:
It’s actually m = (C - 12) /3 But I don’t see it in the 4 option you have.
Step-by-step explanation:
C = 12+ am
C - 12 = am
(C - 12) /a = m
Answer:
beside in this equation where C=$12 a= the additional charges and m= minutes used the equation would be C m=C-12a
Since the beginning of fall, the little tree in front of Mrs.Wenger's house loses 12 more leaves every day. After 5 days, it haf only 208 leaves remaining.
Answer:
268
I'm not smart so if u get this wrong, I'm sorry
Step-by-step explanation:
12 x 5 = 60
60 + 208 = 268
What is the equation in slope-intercept form of the line that passes through the points (−4, 2) and (12, 6)?
Answer:
y = 1x/4 +3
Step-by-step explanation:
Mya applied the distributive property to write the equivalent expressions below
45+ 72 - 9(5 + 9)
What is Mya's error?
Mya did not write the common factor in the correct place,
Mya wrote two expressions that are not equivalent
O Mya did not use the correct operations in the equation,
Mya used a factor that is not common to 45 and 72,
Answer:
Mya wrote two expressions that are not equivalent
Step-by-step explanation:
45 +72 does not equal to 9(5+9)
9(5+9) = 45 + 81
Answer:
D
Step-by-step explanation:
I dislike these kinds of questions. I could argue either of 2 answers - b and d.
b says that her error was that she wrote two expressions that are not equivalent and that is true. She did not write equivalent expressions.
d says she didn't use a common factor to both terms and that is true.
The actual answer is that she made a silly error which we all often do.
8 * 9 is 72
so the distributive property should be
9(5 + 8)
So, what's the answer? I would pick D, but hold your nose when you enter it.
what is the slope of y = -x + 7
Answer:
slope m = - 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - x + 7 ← is in slope- intercept form
with slope m = - 1