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
Ray Of Light [21]
3 years ago
10

Which equations are true?

Mathematics
1 answer:
Vlad [161]3 years ago
7 0

Answer:

Step-by-step explanation:

1)4.5m+4.7=20m+47

4.5m-20m=47-4.7

-15.5m=42.2

m=-2.72

2)14+21w=7(2+3w)

  41+21w=14+21w

   21w-21w=14-41

3)49r+35=7(7r+35)

  49r+35=49r+245

 49r-49r=245-35

4)9(8h-3)=72h-27

  72h-27=72h-27

   72h-72h=-27+27

5)5.2+5.3t=10+15t

   5.3t-15t=10-5.2

    -9.7t=4.8

      t=4.8/-9.7

      t=0.49

6)6f+3.111=18f-33

  6f-18f=-33-3.111

  -12f=-36.111

     f=-36.111/-12

     f=3.01

You might be interested in
If tan theta =3, find the value of tan theta + tan (theta+pi) + tan (theta +2pi)
sweet-ann [11.9K]

Answer:

tan\theta + tan(\theta + \pi) + tan(\theta+2\pi) = 9

Step-by-step explanation:

Given

tan\theta = 3

Required

Find

tan\theta + tan(\theta + \pi) + tan(\theta+2\pi)

Calculate tan(\theta + \pi) \ and\ tan(\theta+2\pi)

Using tan rule

tan(\theta + \pi)  = \frac{tan\theta + tan\pi}{1 - tan\theta tan\pi}

So:

tan(\theta + \pi)  = \frac{tan\theta + 0}{1 - tan\theta *0}

tan(\theta + \pi)  = \frac{tan\theta}{1 }

tan(\theta + \pi)  = \tan\theta

tan(\theta+2\pi)

tan(\theta + 2\pi)  = \frac{tan\theta + tan2\pi}{1 - tan\theta tan2\pi}

tan(\theta + 2\pi)  = \frac{tan\theta + 0}{1 - tan\theta *0}

tan(\theta + 2\pi)  = \tan\theta'

'So:

tan\theta + tan(\theta + \pi) + tan(\theta+2\pi) = tan\theta +tan\theta +tan\theta

tan\theta + tan(\theta + \pi) + tan(\theta+2\pi) = 3+3+3

tan\theta + tan(\theta + \pi) + tan(\theta+2\pi) = 9

4 0
2 years ago
Whats the answer to -20=-4x-6x
Marina86 [1]
2 Would be the answer.


Hope that helps!!
7 0
3 years ago
Lisa's favorite chocolate candies are wrapped in the shape of a triangular prism with shiny gold paper as shown below. if all si
ANEK [815]
It is 96.
triangular part:
1/2 a* g = 1/2 * 8 * 3 = 12 = d
c = √(3²+(8/2)²)=5
square part:2*c + 2*b = 7*2 + 5 * 2 = 24 = e
since you have 2x triangular and 3x squares

2*d+ 3*e = 96
7 0
3 years ago
Read 2 more answers
Simplify 3*a*2*b<br> *=multiply
morpeh [17]

Answer:

3 × a × 2 × b = 3a × 2b

7 0
3 years ago
The radius, R, of a sphere, is 6.3cm. Calculate the sphere's volume, V.
sleet_krkn [62]

Answer:

V = 1046.9

Step-by-step explanation:

The equation for volume is (4/3)pi r^3

substitute 3.14 in for pi and 6.3 in for r so (4/3)*3.14*6.3^3

6 0
2 years ago
Other questions:
  • The number y of calories burned after x hours of rock climbing is represented by the linear function y= 650x. Find the domain of
    7·1 answer
  • Please help asap!!! 16 points ):
    14·1 answer
  • A train traveled 350km in 2.5h. what was the average speed of the train?
    14·1 answer
  • Simplify this question m=12
    15·1 answer
  • A population has a mean of 84 and a standard deviation of 12. A sample of 36 observations will be taken. The probability that th
    7·1 answer
  • Simplify this expression. 2√5(13+√2)
    13·2 answers
  • A $1,200 Mac is on sale for 15% off. How much was the discount?
    14·1 answer
  • Please help using the picture below I need the surface area I also need an explanation
    8·1 answer
  • The volume of a cylinder is 3,166.7 cm2. The radius of the base of the cylinder is 6 cm. What is the height of the cylinder?
    13·1 answer
  • B= c= Please help asap
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!