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
Burka [1]
3 years ago
7

If AB=BC,AB=4=4x-2,andBC=3x+3,fine the length of AB

Mathematics
1 answer:
laila [671]3 years ago
3 0

Answer:

18

Step-by-step explanation:

First, I'm assuming AB=4=4x-2 was a typo and it's supposed to be AB = 4x - 2

AB=BC

AB = 4x - 2 BC = 3x + 3

4x - 2 = 3x + 3

Solve for x Add 2 to each side

4x - 2 = 3x + 3

4x - 2 + 2 = 3x + 3 + 2

4x = 3x + 5 Subtract 3x from each side.

4x - 3x = 3x- 3x + 5

4x - 3x = 5

x = 5

Now plug back in to the original equations

AB = 4x - 2                  BC = 3x + 3

AB = 4 (5) - 2               BC = 3(5) + 3

AB = 20 - 2                  BC = 15 + 3

AB = 18                        BC = 18

So AB is 18

You might be interested in
I can't seem to figure it out
tekilochka [14]
The slope is 2 because remember, y= mx+b
m= slope
the slope is always multiplied by x
6 0
3 years ago
Read 2 more answers
In the fraction 7/8, the numerator denominator is 7.
ololo11 [35]

7/8 is the fraction

7 is the numerator

8 Is the denominator

8 0
2 years ago
Read 2 more answers
Find the vertex of: y=6(x-1)2-8<br> (x,y)
Pepsi [2]
\bf \qquad \textit{parabola vertex form}\\\\&#10;\begin{array}{llll}&#10;y=a(x-{{ h}})^2+{{ k}}\\\\&#10;x=a(y-{{ k}})^2+{{ h}}&#10;\end{array} \qquad\qquad  vertex\ ({{ h}},{{ k}})\\\\&#10;-----------------------------\\\\&#10;\begin{array}{lllcll}&#10;y=&6(x-&1)^2&-8\\&#10;&\uparrow &\uparrow &\uparrow \\&#10;&a&h&k&#10;\end{array}
5 0
2 years ago
Find the area of following figure...?​
MrRa [10]

Answer:

33600 m²

Step-by-step explanation:

The top and bottom horizontal sides are parallel, so this is a trapezoid with bases DC and AB. The height is BC.

area of trapezoid = (a + b)h/2

where a and b are the lengths of the bases, and h is the height.

We need to find the height, BC.

Drop a perpendicular from point A to segment DC. Call the point of intersection E. E is a point on segment DC.

DE + EC = DC

EC = AB = 360 m

DC = 600 m

DE + 360 m = 600 m

DE = 240 m

Use right triangle ADE to find AE. Then BC = AE.

DE² + AE² = AD²

DE² + 240² = 250²

DE² = 62500 - 57600

DE² = 4900

DE = √4900

DE = 70

BC = 70 = h

area = (a + b)h/2

area = (600 m + 360 m)(70 m)/2

area = 33600 m²

4 0
1 year ago
Read 2 more answers
Jan's parents let her pour out the family's coin jar so she could record the number of each type of coin it contained. The resul
rewona [7]
It's B. I think. 19%
7 0
3 years ago
Read 2 more answers
Other questions:
  • Kurt deposited money into his bank account every month. The amount of money he deposited in the first 5 months of 2014 is listed
    15·2 answers
  • Find the variable x.
    13·1 answer
  • Which of these are symptoms of schizophrenia?. A. expressing emotions less intensely B.compulsively repeating an action C.wantin
    12·1 answer
  • What is the standard form of the number shown in this caculator display? 3.82eplus7​
    14·1 answer
  • Y = x2 + 4x – 117<br><br> i need to know the roots and vertex
    11·1 answer
  • Daisy Hill has saved $5,000 for her first semester of college. She plans to
    12·2 answers
  • Which situation represents a proportional relationship?
    10·1 answer
  • To the nearest tenth, find the area of a circle with a<br>diameter of 8 meters. Use 3.14 ​
    12·1 answer
  • HELP ME PLEASEEE [GIVING BRAINLIEST TO BEST ANSWER W/ EXPLANATION]
    13·1 answer
  • Can someone please help me on this ty!!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!