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
Temka [501]
3 years ago
6

Please hurry for 5 Star and brainliest! What is the value of x? (See picture)

Mathematics
2 answers:
marin [14]3 years ago
8 0
The value of x is 23
andrew11 [14]3 years ago
6 0
The value of x is 51
You might be interested in
How do I find the quotient for 42.6 ÷ 0.07
OLga [1]

Answer:

Step-by-step explanation:

42.6 divided by 0.07 is 608.571428

Regular division.

5 0
3 years ago
PLEASE HELP A flight across the US takes longer east to west then it does west to east. This is due to the plane having a headwi
il63 [147K]
To solve our questions, we are going to use the kinematic equation for distance: d=vt
where
d is distance 
v is speed  
t is time 

1. Let v_{w} be the speed of the wind, t_{w} be time of the westward trip, and t_{e} the time of the eastward trip. We know from our problem that the distance between the cities is 2,400 miles, so d=2400. We also know that the speed of the plane is 450 mi/hr, so v=450. Now we can use our equation the relate the unknown quantities with the quantities that we know:

<span>Going westward:
The plane is flying against the wind, so we need to subtract the speed of the wind form the speed of the plane:
</span>d=vt
2400=(450-v_{w})t_{w}

Going eastward:
The plane is flying with the wind, so we need to add the speed of the wind to the speed of the plane:
d=vt
2400=(450+v_{w})t_{e}

We can conclude that you should complete the chart as follows:
Going westward -Distance: 2400 Rate:450-v_w Time:t_w
Going eastward -Distance: 2400 Rate:450+v_w Time:t_e

2. Notice that we already have to equations:
Going westward: 2400=(450-v_{w})t_{w} equation(1)
Going eastward: 2400=(450+v_{w})t_{e} equation (2)

Let t_{t} be the time of the round trip. We know from our problem that the round trip takes 11 hours, so t_{t}=11, but we also know that the time round trip is the time of the westward trip plus the time of the eastward trip, so t_{t}=t_w+t_e. Using this equation we can express t_w in terms of t_e:
t_{t}=t_w+t_e
11=t_w+t_e equation
t_w=11-t_e equation (3)
Now, we can replace equation (3) in equation (1) to create a system of equations with two unknowns: 
2400=(450-v_{w})t_{w}
2400=(450-v_{w})(11-t_e) 

We can conclude that the system of equations that represent the situation if the round trip takes 11 hours is:
2400=(450-v_{w})(11-t_e) equation (1)
2400=(450+v_{w})t_{e} equation (2)

3. Lets solve our system of equations to find the speed of the wind: 
2400=(450-v_{w})(11-t_e) equation (1)
2400=(450+v_{w})t_{e} equation (2)

Step 1. Solve for t_{e} in equation (2)
2400=(450+v_{w})t_{e}
t_{e}= \frac{2400}{450+v_{w}} equation (3)

Step 2. Replace equation (3) in equation (1) and solve for v_w:
2400=(450-v_{w})(11-t_e)
2400=(450-v_{w})(11-\frac{2400}{450+v_{w}} )
2400=(450-v_{w})( \frac{4950+11v_w-2400}{450+v_{w}} )
2400=(450-v_{w})( \frac{255011v_w}{450+v_{w}} )
2400= \frac{1147500+4950v_w-2550v_w-11(v_w)^2}{450+v_{w}}
2400(450+v_{w})=1147500+2400v_w-11(v_w)^2
1080000+2400v_w=1147500+2400v_w-11(v_w)^2
(11v_w)^2-67500=0
11(v_w)^2=67500
(v_w)^2= \frac{67500}{11}
v_w= \sqrt{\frac{67500}{11}}
v_w=78

We can conclude that the speed of the wind is 78 mi/hr.
6 0
3 years ago
Based on the polynomial remainder theorem, what is the value of the function when x = 4?
ipn [44]

Answer:

124

Step-by-step explanation:

When x=4, substitute 4 into the function to give f(4).

f(4) = (4)^4 - 2(4)^3 + 5(4)^2 -20(4) -4\\f(4) = 256 - 2(64) + 5(16) - 80 -4\\f(4) = 256 -128 + 80 - 80 -4\\f(4) = 128+80-80-4\\f(4) = 208-80-4\\f(4) = 128-4\\f(4) = 124

4 0
3 years ago
A bakery sells 9 vanilla cakes for every 5 chocolate cakes. This is represented in the diagram below. Use the drop-down menus to
Dmitrij [34]

Step-by-step explanation:

Hsjsisusshskakaisussgsgshwuiwiwiwjwhgwywuwoqoajgsgsuwiwow

5 0
3 years ago
Read 2 more answers
PLEASE HELP ME!!!! In each diagram AB is tangent to C at B. Find the value of x.​
klio [65]
Answer is 9

Step by step explanation
As CB is radius CB=3, CA=3+7=10
X^2=(7+3)^2-3^2=100-9=81
X=9
3 0
3 years ago
Other questions:
  • Between Monday and Tuesday, Henry swam a total of 4 3⁄9 miles. If he swam 2 7⁄9 miles on Monday, how many miles did he swim on T
    7·1 answer
  • How many 2.5 inch by 6 inch tiles will fit on a back splash that is 2.5 feet tall and 8 feet long
    14·1 answer
  • What is the value of y in the equation 4(y-6) = - 4 ? REMEMBER TO DISTRIBUTE! *
    13·2 answers
  • 4/5 divided by x = 1
    7·1 answer
  • The volume of a rectangular prism is represented by the function x3 + 9x2 + 6x − 16. The length of the box is x + 2, while the h
    15·1 answer
  • The money used in jordan is called the dinar. The exchange rate is $3 to 2 dinars. How many dollars you would receiveif you exch
    14·1 answer
  • Sandy is 6 inches taller than Marie. If Marie
    15·2 answers
  • Does anyone know this i will give brainliest
    9·1 answer
  • Complete the congruent statement
    8·1 answer
  • 4<br> Find the y-intercept of the line shown on the coordinate plane.<br> 11
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!