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
Rufina [12.5K]
2 years ago
11

Hellp me What is the value of x? (5 points)

Mathematics
2 answers:
polet [3.4K]2 years ago
5 0
Answer: 30

Explanation: 2x+30=90
-30 -30
2x=60
x=30



Hope this helps! :)
juin [17]2 years ago
3 0
2(30)=60+30=90. thats a right angle which is 90 degrees so the answer is 30
You might be interested in
What is the base of a parallelogram with an area of 36 square centimeters, if its height is 3 centimeters?
Semenov [28]
Area of parallelogram = base x height.
Base = area divided by height
Base = 36 divided by 3
Base = 12 cm. (not cm2 because it is not the area)
8 0
3 years ago
PLEASE HELP!!! 20 POINTS!!!! WILL MARK YOU BRAINIEST!!! Two isosceles triangles share the same base. Prove that the medians to t
katovenus [111]

Answer:

Given: Two Isosceles triangle ABC and Δ PBC having same base BC. AD is the median of Δ ABC and PD is the median of Δ PBC.

To prove: Point A,D,P are collinear.

Proof:

→Case 1.  When vertices A and P are opposite side of Base BC.

In Δ ABD and Δ ACD

AB= AC   [Given]

AD is common.

BD=DC  [median of a triangle divides the side in two equal parts]

Δ ABD ≅Δ ACD [SSS]

∠1=∠2 [CPCT].........................(1)

Similarly, Δ PBD ≅ Δ PCD [By SSS]

∠ 3 = ∠4 [CPCT].................(2)

But,  ∠1+∠2+ ∠ 3 + ∠4 =360° [At a point angle formed is 360°]

2 ∠2 + 2∠ 4=360° [using (1) and (2)]

∠2 + ∠ 4=180°

But ,∠2 and ∠ 4 forms a linear pair i.e Point D is common point of intersection of median AD and PD of ΔABC and ΔPBC respectively.

So, point A, D, P lies on a line.

CASE 2.

When ΔABC and ΔPBC lie on same side of Base BC.

In ΔPBD and ΔPCD

PB=PC[given]

PD is common.

BD =DC [Median of a triangle divides the side in two equal parts]

ΔPBD ≅ ΔPCD  [SSS]

∠PDB=∠PDC [CPCT]

Similarly, By proving ΔADB≅ΔADC we will get,  ∠ADB=∠ADC[CPCT]

As PD and AD are medians to same base BC of ΔPBC and ΔABC.

∴ P,A,D lie on a line i.e they are collinear.

6 0
2 years ago
At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 6 cubic feet per minute. The dia
Alla [95]

Answer:

0.2122\text{ ft per min}

Step-by-step explanation:

Let r be the radius ( in feet ) of the cone,

So, the diameter of the cone = 2 × radius = 2r feet,

∵ The diameter of the base of the cone is three times the height,

If h represents the height of the cone,

⇒ 2r = 3 × h,

⇒ r=\frac{3h}{2} feet,

∵ Volume of a cone,

V=\frac{1}{3}\pi R^2 H

Where,

R = radius, H = height,

Thus, the volume of the given cone is,

V=\frac{1}{3}\pi r^2 h

=\frac{1}{3}\pi (\frac{3h}{2})^2 h

=\frac{3}{4}\pi h^3

Differentiating with respect to t ( time )

\frac{dV}{dt}=\frac{9}{4}\pi h^2\frac{dh}{dt}

We have,

\frac{dV}{dt}=6\text{ cubic ft per min},h=2\text{ feet}

6=\frac{9}{4}\pi (2)^2 \frac{dh}{dt}

6=9\pi \frac{dh}{dt}

\implies \frac{dh}{dt}=\frac{6}{9\pi }\approx 0.2122\text{ ft per min}

4 0
3 years ago
Help.. ill give brainliest..
frosja888 [35]

(-6)-(+2)= -8

(-9)-(-8)= -17

(-6)-(+6)= -12

(-8)-(-8)= -16

(+5)-(+1)= 4

(+6)-(-2)= 8

(-3)-(+5)= -8

(-8)-(+5)= -13

(-9)-(-4)= -13

(+1)-(+3)= -2

(-3)-(+8)= -11

(+9)-(-4)= 13

(+8)-(-7)= 15

(-6)-(+3)= -9

(-3)-(+4)= -7

(-4)-(+3)= -7

(-6)-(+1)= -7

(+8)-(-8)= 16

(+1)-(+4)= -3

(+7)-(+9)= -2

(+5)-(-5)= 10

(+6)-(-9)= 15

(+7)-(-5)= 12

(+2)-(+1)= 1

(-6)-(+3)= -9

(+2)-(+9)= -7

(+1)-(+1)= 0

(-2)-(+3)= -5

(+3)-(+4)= -1

(+8)-(-9)= 17

8 0
2 years ago
Laura is saving money to buy a bike. She has $52 and is going to save an additional $8 each week. The bike costs $164. In how ma
Montano1993 [528]
14 weeks
164-52=112
112/8=14
8 0
2 years ago
Read 2 more answers
Other questions:
  • What should be the first step in adding these equations to eliminate y? 12x-2y=-1
    7·1 answer
  • 2 algebra books and 3 geometry books cost $ 34, and 2 algebra and 2 geometry books cost $ 36. how much are each of the books
    11·1 answer
  • If a pair of shoes costs $52.50 including a 7.25% tax, what is the original cost of the item before taxes are added? No other sy
    9·1 answer
  • Will give brainliest please help ASAP
    10·1 answer
  • Every week, Hector works 20 hours and earns $210.00. He earns a constant amount of money per hour.
    7·1 answer
  • What is the value of f(-3) if f(x)=5(2-x)
    13·2 answers
  • True or false: 3x^2+5x^3=8x^3
    10·1 answer
  • Which expression could be represented by this model?
    6·1 answer
  • If the sixth term of a sequence is 128 and the common ratio is 2, then what is the first term? 1, 2 or ,4
    14·1 answer
  • If the line segment joining the points A(4, − 5) and B(4, 5) is divided by the point P such that AP/PB = 2/5. find the co-ordina
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!