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
kifflom [539]
3 years ago
10

In quadrilateral ABCD,AB produced is perpendicular to DC produced.If A=44° and C=148°,calculate D and B.

Mathematics
1 answer:
7nadin3 [17]3 years ago
5 0
Let AB extended intersect DC extended at point E 
<span>We now have right triangle BEC with E = 90 degrees </span>

<span>For triangle BEC: </span>
<span>Exterior angle at E = 90 </span>
<span>Exterior angle at C = 148 (given) </span>
<span>Exterior angle of all polygons add up to 360 degrees </span>
<span>Exterior angle at B = 360−148−90 = 122 </span>

<span>So in quadrilateral ABCD </span>
<span>B = 122 </span>
<span>D = 360−44−148−122 = 46</span>
You might be interested in
 Sandra sells necklaces at a school craft fair. She uses the equation P= 7.5n - (2.25n + 15) to determine her total profit at th
gregori [183]
The way you find profit is to subtract the revenue and the cost
Profit = Revenue - Cost
The revenue is the amount of money coming in, the cost is the amount of money going out. The goal of course is to have the revenue larger than the cost so that the profit is positive. 

So the equation given is
P = 7.5n - (2.25n+15)
and its in the form
P = R - C
where...
R = 7.5n is the revenue equation
C = 2.25n+15 is the cost equation

Focus on the revenue equation
R = 7.5n
which is the same as 
R = 7.50*n

This tells us that Sandra pulls in a total of 7.50*n dollars where n is some positive whole number. It represents the number of necklaces sold. For example, if she sold n = 10 necklaces, then
R = 7.50*n
R = 7.50*10
R = 750
meaning that Sandra has made $750 in revenue

As you can see above, the revenue is computed by multiplying the price per necklace ($7.50) by the number of necklaces sold (n) to get R = 7.50*n

So that's why the answer is $7.50

Note: The 2.25 is part of the cost equation. This is known as the variable cost. It is the cost to make one necklace ignoring the fixed cost (eg: rent). The variable cost often doesn't stay the same, but algebra textbooks often simplify this aspect. 
8 0
3 years ago
Which equation has no real solutions?
olasank [31]

Answer:

A

Step-by-step explanation:

x=

−b±√b2−4ac

2a

x=

−(2)±√(2)2−4(2)(15)

2(2)

x=

−2±√−116

4

and there is really no solution

6 0
2 years ago
PLS HELP ASAP ILL GIVE BRAINLKEST PLS THANKS PLS ASAP
ollegr [7]

Answer:

The bottom one

Step-by-step explanation:

the lowest dot is on -3 so that's the y-intercept

the other is at 2 x and -1 y

4 0
2 years ago
Read 2 more answers
Which relationship describes angles 1 and 2?
In-s [12.5K]

Answer:

Supplementary Angles

Adjacent Angles

Step-by-step explanation:

Angles 1 and 2 share a vertex and form a straight line. These angles are called supplementary angles. They add to 180 degrees and form a straight line. They are adjacent as well because they share a vertex and side.

3 0
2 years ago
How do you divide decimals?
MakcuM [25]
You use long division to divide decimals
3 0
3 years ago
Other questions:
  • (4x^4+8x^3+x-3) divided by 2x
    12·1 answer
  • 3c-15=90<br> Solve your equation to find the cost of the sweater at the store.
    5·1 answer
  • Anumeha knows the following information about a set of 20 numbers: 9 numbers are a multiple of 3 but not a multiple of 4. 10 num
    9·2 answers
  • twelve pounds of beans are being evenly distributed into eight bags how many pounds of beans are there answer must be in simples
    7·2 answers
  • Will mark as Brainliest!!!
    13·1 answer
  • If you awnser this correctly I will give you more points​
    12·2 answers
  • Classify the solutions of 1 over x plus 4, plus one half, equals 1 over x plus 4 as extraneous or non-extraneous.
    6·2 answers
  • Complete the square to rewrite y = x– 5x + 7 in graphing form and state the<br> vertex.
    11·1 answer
  • HELP WHAT IS THE EQUATION !????
    12·1 answer
  • Trent buys a playground slide priced at $583. If the sales tax is 5%, how much tax will
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!