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
Ksivusya [100]
3 years ago
7

Find the value of each variable and the measure of each labeled angle. Explain your answer.

Mathematics
1 answer:
Mademuasel [1]3 years ago
3 0

Answer:

(3x + 8) = 50

(5x - 20) = 50

(5x + 4y) = 130

Step-by-step explanation:

3x + 8 = 5x - 20

2x = 28

x = 14

5(14) + 4y + 5(14) - 20 = 180

y = 15

You might be interested in
Write an expression for the sequence of operations described below.
Anna [14]

Answer:

a - (6-9)

Hopefully this is correct

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
An aircraft flew 5 hours with the wind. The return trip took 6 hours against the wind. If the speed of the plane in still air is
Yakvenalex [24]

Answer:

Speed of wind = 23.63 miles per hour

Plane speed in still air = 260 miles per hour

Step-by-step explanation:

Given:

Time taken with wind = 5 hour

Time taken against wind = 6 hour

Assume;

Speed of wind = s

So,

Speed of Plane with wind = (260 + s) miles per hour

Speed of Plane against wind = (260 - s) miles per hour

Distance = speed x time

So,

(260 + s)5 = (260 - s)6

1,300 + 5s = 1,560 - 6s

11s = 260

s = 23.63 miles per hour

Speed of wind = 23.63 miles per hour

Plane speed in still air = 260 miles per hour

5 0
2 years ago
Which equation matches the graph below?
Oksana_A [137]

Answer:Given that the graph shows tha the functión at x = 0 is below the y-axis, the constant term of the function has to be negative. This leaves us two possibilities:

y = 8x^2 + 2x - 5 and y = 2x^2 + 8x - 5

To try to discard one of them, let us use the vertex, which is at x = -2.

With y = 8x^2 + 2x - 5, you get y = 8(-2)^2 + 2(-2) - 5 = 32 - 4 - 5 = 23 , which is not the y-coordinate of the vertex of the curve of the graph.

Test the other equation, y = 2x^2 + 8x - 5 = 2(-2)^2 + 8(-2) - 5 = 8 - 16 - 5 = -13, which is exactly the y-coordinate of the function graphed.

Step-by-step explanation:

6 0
3 years ago
Not sure about this one help please
lutik1710 [3]

Answer:

a) -1

Step-by-step explanation:

Slope is also known as the gradient

1. assign a value to x and solve for y:

when x = 2, y = 2

when x = 4, y = 0

2. Next, use the equation of a straight line to find the gradient

y = mx + c

y is the y-coordinate, m is the gradient, x is the x-coordinate, c is the point where the line crosses the y-axis, which is found by equating y to 0 and solving for x

so y = mx + c becomes 2 = m*2 + 4, which then becomes 2 = 2m + 4

2m = -2 (take 4 away from 2)

<u>m = -1 </u>

5 0
3 years ago
Explain why 2+x and x+3 are equivalent
wlad13 [49]

Check whether the two expressions 2x+3y2x+3y and 2y+3x2y+3x equivalent.

The first expression is the sum of 2x2x 's and 3y3y 's whereas the second one is the sum of 3x3x 's and 2y2y 's.

Let us evaluate the expressions for some values of xx and yy . Take x=0x=0 and y=1y=1 .

2(0)+3(1)=0+3=32(1)+3(0)=2+0=22(0)+3(1)=0+3=32(1)+3(0)=2+0=2

So, there is at least one pair of values of the variables for which the two expressions are not the same.

5 0
3 years ago
Other questions:
  • What's the product of 21 and (6.3 times 10-4)
    6·1 answer
  • What is the value of the expression 2 + 32 ⋅ (4 − 1)?
    7·2 answers
  • An anthropology graduate student measures the floor of a round hut and calculates that it has an area of 12.56 square meters. Wh
    9·1 answer
  • An 8-car Ferris wheel is shaped like a regular octagon. Does the Ferris wheel have rotational symmetry?
    11·1 answer
  • Solve 2/3 plus 5/6 and put answer in simplest form. a9/6 b 2/3 c 7/6 d 11/2
    12·2 answers
  • What is the quotient of a number and 4 is -7
    5·1 answer
  • Write out the form of the partial fraction decomposition of the function (as in this example). Do not determine the numerical va
    6·1 answer
  • Which dimensions can create only one unique triangle?
    10·2 answers
  • Solve x2 – 2x = 15 by applying the quadratic formula.
    11·1 answer
  • 21.5% of 825 is<br> what number?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!