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
Korolek [52]
3 years ago
13

In parallelogram ABCD , ∠A and ∠B are adjacent. The measure of ∠B is two times the measure of ∠A . Which equation gives the exac

t measure of ∠A ?
Mathematics
1 answer:
Alex787 [66]3 years ago
4 0
<span>A = 2 * B - 30
in a parallelogram, opposite angles are equal.
sum of the angles in a parallelogram is 360 degrees.
this means that 2A + 2B = 360.
divide both sides of this equation by 2 to get:
A + B = 180. </span>
You might be interested in
WILL GIVE THE BRAINLEST<br> EXPLAIN
Aleksandr-060686 [28]

Answer:

the worker is incorrect

Step-by-step explanation:

Angle DAC measures more than angle BDA

3 0
3 years ago
Read 2 more answers
What is the percent error in using 3.14 as an approximation of pi
inessss [21]
Pi is an irrational number meaning it has no end, 3.14 is just an estimate which means that it is not accurate.
5 0
3 years ago
Solve the equation by graphing. If exact roots cannot be found, state the consecutive integers between which the roots are locat
zavuch27 [327]

Answer:

The equation contains exact roots at x = -4 and x = -1.

See attached image for the graph.

Step-by-step explanation:

We start by noticing that the expression on the left of the equal sign is a quadratic with leading term x^2, which means that its graph shows branches going up. Therefore:

1) if its vertex is ON the x axis, there would be one solution (root) to the equation.

2) if its vertex is below the x-axis, it is forced to cross it at two locations, giving then two real solutions (roots) to the equation.

3) if its vertex is above the x-axis, it will not have real solutions (roots) but only non-real ones.

So we proceed to examine the vertex's location, which is also a great way to decide on which set of points to use in order to plot its graph efficiently:

We recall that the x-position of the vertex for a quadratic function of the form f(x)=ax^2+bx+c is given by the expression: x_v=\frac{-b}{2a}

Since in our case a=1 and b=5, we get that the x-position of the vertex is: x_v=\frac{-b}{2a} \\x_v=\frac{-5}{2(1)}\\x_v=-\frac{5}{2}

Now we can find the y-value of the vertex by evaluating this quadratic expression for x = -5/2:

y_v=f(-\frac{5}{2})\\y_v=(-\frac{5}{2} )^2+5(-\frac{5}{2} )+4\\y_v=\frac{25}{4} -\frac{25}{2} +4\\\\y_v=\frac{25}{4} -\frac{50}{4}+\frac{16}{4} \\y_v=-\frac{9}{4}

This is a negative value, which points us to the case in which there must be two real solutions to the equation (two x-axis crossings of the parabola's branches).

We can now continue plotting different parabola's points, by selecting x-values to the right and to the left of the x_v=-\frac{5}{2}. Like for example x = -2 and x = -1 (moving towards the right) , and x = -3 and x = -4 (moving towards the left.

When evaluating the function at these points, we notice that two of them render zero (which indicates they are the actual roots of the equation):

f(-1) = (-1)^2+5(-1)+4= 1-5+4 = 0\\f(-4)=(-4)^2+5(-4)_4=16-20+4=0

The actual graph we can complete with this info is shown in the image attached, where the actual roots (x-axis crossings) are pictured in red.

Then, the two roots are: x = -1 and x = -4.

5 0
3 years ago
Which of the following best defines 2 2/3?
inna [77]

Answer:

A. \sqrt[3]{4} = Cube root of 4.

Step-by-step explanation:

We have been given an expression 2^{\frac{2}{3}}. We are asked to find the equivalent expression for our given expression.

Using exponent property \sqrt[n]{a^m} =a^{\frac{m}{n}, we will get,

2^{\frac{2}{3}}=\sqrt[3]{2^2}

2^{\frac{2}{3}}=\sqrt[3]{4}

Upon looking at our given choices, we can see that option A is the correct choice.

3 0
3 years ago
Read 2 more answers
Please help me answer this question?
zalisa [80]

Answer:

2+2

Step-by-step explanation:

2 + 4!

3-5

3_4

3-6

2-5

2+5

2_3

2-5

7 0
2 years ago
Read 2 more answers
Other questions:
  • What is the value of p for they following triangular prism<br><br> Please help me!!!!!!!!!!!
    10·1 answer
  • An opaque bag contains 5 green marbles 3 blue marbles and 2 red marbles. What is the probability of randomly picking out a marbl
    6·1 answer
  • "A shipment has 20 items. Five items will be picked randomly and checked for quality. If at least one item is defective, then th
    12·1 answer
  • Find the mistake made in the steps to solve the equation below
    7·2 answers
  • C(x) = 2.5x +25<br> R(x) = 12x<br> FIND (C + R)(X)
    9·1 answer
  • The length of the hypotenuse of a 30 -60 -90 triangle is 11, find the perimeter ?
    10·1 answer
  • In 4 regular season basketball games, James Harden scored 141 points. Write an equation to represent the number of points scored
    11·2 answers
  • An object is 3.6 m from the pinhole. Its image is 4.2 cm from the opposite side of the pinhole. The height of the image is 0.8 c
    10·1 answer
  • Round The Following Number: 194,332.125
    13·2 answers
  • 9. A car dealership offers a loan with 4% interest for 48 months, and you plan to purchase a car for $20,000. You can afford a d
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!