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
KATRIN_1 [288]
3 years ago
10

Make for me number 21 thx

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
8 0

Method One

You could divide by 5 right away.

20/5 = - 3 + x

4 = - 3 + x Add 3 to both sides.

4 + 3 = x

x = 7

Method Two.

You could remove the brackets. This is slightly longer, but some questions can only be solved that way.

20 = 5(-3) + 5x

20 = -15 + 5x Add 15 to both sides

20 + 15 = 5x

35 = 5x Divide by 5

35/5 = x

7 = x

You might be interested in
A humpback whale swims at 40mph for 30 minutes, then rests for 15 minutes, then swims at 32 mph for 45 minutes. What is the whal
klasskru [66]
Average speed=totaldistance/ttoaltime

d=rt
40mph for 30mins (1/2 hr), travels 20mi
rest for 15min (1/4 hr), travels 0mi
swims at 32mph for 45min (3/4hr), travels 96/4=24mi

total distance=20+0+24=44
total time=1/2+1/4+3/4=1 and 1/2=3/2
44/(3/2)=44 times 2/3=88/3=29 and 1/3

about 29 and 1/3 mph
6 0
3 years ago
Read 2 more answers
What is the value of x?<br> X= ?
qaws [65]

Answer:

46

Step-by-step explanation:

x=180-134=46

rate brainliest please

4 0
3 years ago
John is 3 years older than Jim. Jim is 4 years less than half of Dana’s age. How old is each person if their ages add up to 167?
kogti [31]

Solution:

we are given that

John is 3 years older than Jim. Jim is 4 years less than half of Dana’s age.

Let the age of Jim be x years then we can say

Age of John=x+3

If diana Age is D then

x=D/2-4

It can be re-wriiten as

Diana age D=2x+8

Given that  their ages add up to 167

x+x+3+2x+8=167\\&#10;\\&#10;4x+11=167\\&#10;\\&#10;4x=167-11\\&#10;\\&#10;4x=156\\&#10;\\&#10;x=39\\

Hence jim is 39 nyears old, John is 39+3=42 years old. and Diana is 2*39+8=78+8=86 years old.

3 0
3 years ago
$5 is what percent of $5?
ch4aika [34]

Answer:

$5 is 100% of $5.

4 0
3 years ago
Read 2 more answers
Ratio 90kg to 2 : 3 : 7
adoni [48]

Answer:

Please follow me back

Step-by-step explanation:

The Answer is 158

3 0
2 years ago
Other questions:
  • Find the distance between 6,-2 and 1,-2​
    7·2 answers
  • Bobby is helping buy meats, for grilling, for the school picnic. He bought 10 pounds of sausage at $1.69 per pound, 100 pounds o
    13·1 answer
  • How do you find out the volume
    14·2 answers
  • Two boats are observed by a parasailer 75 meters above a lake. The angles of depression are 12.5° and 79. How far apart are the
    13·1 answer
  • A 2011 Gallup Poll found that 76% of Americans believe that high achieving high school students should be recruited to become te
    8·1 answer
  • Will give brainliest and plz no fake answers
    14·1 answer
  • PLEASE HELP I HAVE FIFTEEN MINUTES ANSWER ALL QUESTIONS BRAINLIEST PLEASE PLEASE PPPLLLEEEAAASSSEEE
    8·1 answer
  • Round your answer to the nearest hundredth.<br> 0<br> A<br> 70°<br> 4<br> B
    13·1 answer
  • I cant get this at all
    11·1 answer
  • Please help me im in a rush
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!