All categories

2 years ago

Please help! X=? AB=? BC=?

Mathematics

2 answers:

kow [346]2 years ago

3 0

Answer:

X=5

AB=13

BC=17

Step-by-step explanation:

So first you add the two equations together and the total will have to be 30.

So, 2x+3-4x-3=30

Simplified 6x=30

x=5.

2x+3 -> 5 times 2 + 3

4x - 3 -> 5 times 4 - 3

Brut [27]2 years ago

3 0

Answer:

Step-by-step explanation:

AB + BC = AC

2x +3 + 4x - 3 = 30

2x + 4x + 3 - 3 = 30

Combine like terms

6x = 30

Divide both sides by 6

x = 30/6

x = 5

AB = 2x + 3 = 2*5 + 3 = 10 + 3

AB = 13

BC = 4x - 3 = 4*5 - 3 = 20 - 3

BC = 17

You might be interested in

What is the value of x? There is isosceles triangle. The measure of angle which is between two congruent sides is (6x+10⁰). The

max2010maxim [7]

<h3><u>Answer</u><u>:</u><u>-</u></h3>

x=17

<h3><u>step-by</u><u>-</u><u>step</u><u> </u><u>Explanation</u><u>:</u><u>-</u></h3>

${\boxed{\quad\:\mapsto\rm Firstly\:Let's\:understand\:the\:concept:-}}$

<h3 />

This is a isosceles triangle. As it is a triangle we can apply sum theory. we have to take the sum of given unknown polynomials as 180° .Then by solving it we can find the value of x.

<h3><u>Solution</u><u>:</u><u>-</u></h3>

Given angles

(6x+10°)
(x+17°)
(4x-34)°

According to sum theory

${\boxed{\sf The \:sum\:of\:angles=180°}}$

Substitute the values

$\qquad \quad{:}\longmapsto\tt (6x+10)+(x+17)+(4x-34)=180$

Remove brackets

$\qquad \quad{:}\longmapsto\tt 6x+10+x+17+4x-34=180$

Together like polynomials and constants

$\qquad \quad{:}\longmapsto\tt 6x+x+4x+10+17-34=180$

$\qquad \quad{:}\longmapsto\tt 11x-7=180$

Interchange sides

$\qquad \quad{:}\longmapsto\tt 11x=180+7$

$\qquad \quad{:}\longmapsto\tt 11x=187$

$\qquad \quad{:}\longmapsto\tt x=\cancel{\dfrac{187}{11}}$

Simplify

$\qquad \quad{:}\longmapsto\tt x=17$

$\therefore\sf The \:value\:of\:x\;is\:17.$

8 0

3 years ago

Please answer this 22360 to 1 significant figure?

miskamm [114]

Zeros do not count as a sigfig so when you do something like this problem just include the numbers until you hit your significant figure limit and then substitute zeros where you can. 20000

8 0

3 years ago

Angle CDE has a slightly greater measure than the measure

svlad2 [7]

Answer:

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

If the area of a rectangle with width x can be represented with the expression A(x) = x(14 – x), what is the perimeter of the re

Marianna [84]

A=WL
P=2(L+W)

A=(x)(14-x)
W=x
L=14-x
P=2((14-x)+x)
P=2(14-x+x)
P=2(14+0)
P=2(14)
P=28

perimiter=24 units

5 0

3 years ago

In the diagram, mZXYZ = 115° and mZWXY = 45°.

Allushta [10]

Step-by-step explanation:

mXYZ+mXYW=180°(being straight angle)

mXYW =180-115

mXYW=65

now,

mXWY+mWXY+mXYW=180°(sum of angle of triangle)

mXWY=180-110

mXWY=70°

hope it helps.

4 0

2 years ago