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
Sidana [21]
2 years ago
10

My teacher refuses to teach me please help..

Mathematics
1 answer:
alekssr [168]2 years ago
5 0

Answer: x=30

Step-by-step explanation:

The sum of the angles must be 360.

4x+3x+3x+2x = 12x

12x = 360

x =360/12 = 30

You might be interested in
Write the decimal and fraction in simplest form to represent the shaded portion of
Kamila [148]

Answer:

The decimal in simplest form is .625, and the fraction in simplest form is 5/8.

Step-by-step explanation:

To find the decimal that represents the shaded area, you have to find the fraction 5/8 and divide 5 by 8

Hope this helps!

8 0
2 years ago
169/13 draw a quick picture with base ten blocks explain
Kitty [74]
I wish i could show u how to work it out but just do it or work it out the same way as the fractional numbers.
7 0
3 years ago
1.)Find the height of a rectangular prism if the surface area is 148 cm2, the width is 4 cm and the length is 5 cm.
Contact [7]
1) surface of a rectangular prism=2(length x width)+2(length x height)+2(width x height)

Therefore:
148 cm²=2(5 cm x 4 cm)+2(5 cm x h)+2(4 cm x h)=
148 cm²=40 cm²+10 cm h+8 cm h
18 cm h=148 cm²-40 cm²
18 cm h=108 cm²
h=108 cm² / 18 cm=6 cm.

answer: height=6 cm 

2)
Volume of a rectangular prism= length x width x height 
therefore:
34 cm³=(1.7 cm)(0.5 cm) h
0.85 cm² h=34 cm³
h=34 cm³/0.85 cm²
h=40 cm.

answer: height=40 cm

3)
volume of a cylinder: πr²h
therefore.
118.79 ft³=πr²(5 ft)
r=√(118.79 ft³/5π ft)≈2.75 ft

answer: radius=2.75 ft

4)
 
Surface area of the pyramid with square base=4(A side)+A base
A side=(1/2)(8ft)(12 ft)=48 ft²
A base=(8 ft)(8 ft)=64 ft²

surface area=4(48 ft²)+64 ft²=256 ft²

Answer: the surface area of this pyramid would be 256 ft².

5)
surface of a cone=πrs+πr²
therefore:
radius=diameter/2=6.2 ft/2=3.1 ft
63.3 ft²=π(3.1 ft) s+π(3.1 ft)²
3.1π ft s=33.109 ft²
s=33.109 ft² /3.1π ft
s≈3.4 ft

Answer: the slant height would be 3.4 ft.

6)
volume of a square pyramid=(area of base x heigth)/3
therefore:
area of base=(6 ft)(6 ft)=36 ft²
126.97 ft³=36 ft² h /3
h=126.97 ft³/12 ft²=10.58 ft

answer: the height would be 10.58 ft.

7)
volume of a cone =(base x height)/3
base of a cone=πr²
therefore: 
199.23 cm³=πr²(9 cm)/3
r=√(199.23 cm³ / 3π cm)≈4.6 cm

answer: the radius would be 4.6 cm.

5 0
3 years ago
Whats is equivanlent fractions of 24/84
Aloiza [94]

Answer:

2/7

Step to step explanation:

This question is in other words, asking you to simplify the fraction.

Find the GCF and divide both the denominator and numeratior by the GCF.

The GCF of 24/84 is 12.

24/12 = 2

84/12 = 7.

3 0
3 years ago
How do work this out
BabaBlast [244]
We can factor this by using grouping. Take the leading coefficient and multiply it by the constant. In this case we get 5*-7 = -35. 

Now we need 2 numbers that add to 2 and multiply to be -35. The numbers are -5 and 7.

So split the 2r into these two terms and group.

(5r^2 - 5r) + (7r - 7)

Factor both groups.

5r(r-1) + 7(r-1)

The factors of (r-1) can be added together to get the answer.

(r-1)(5r+7)
6 0
3 years ago
Other questions:
  • A tap takes 3 hours to fill a tank. A discharge tap takes 6 hours to empty the same tank. How long will it take to fill the tank
    13·1 answer
  • Spring street middle school orders 9 calculators for every 12 students. How many calculators do you predict the school would ord
    10·2 answers
  • What is the common difference of the arithmetic sequence 5, 8, 11, 14?
    15·1 answer
  • (Please help ASAP, Will give brainliest)
    8·2 answers
  • Help me please
    14·1 answer
  • Which quantity is proportional to 12⁄48?
    6·2 answers
  • Find the lateral area of the cylinder to the nearest tenth.
    7·2 answers
  • on Monday 76 students played soccer on Tuesday 62 students play soccer on Wednesday 68 students play soccer how many more studen
    6·1 answer
  • I NEED HELP ASAP!! I CAN GIVE BRAINLIST!!!
    13·2 answers
  • Any help? Explanation would help massively too! Work out the length of AB
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!