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
NARA [144]
1 year ago
10

Hi I need help

Mathematics
2 answers:
Nonamiya [84]1 year ago
7 0

<u>Equation #1</u>:

  • -15+4r=-9

We move all terms to the left:

-15+4r-(-9)=0

We add all the numbers together, and all the variables

4r-6=0

We move all terms containing r to the left, all other terms to the right

4r=6

r=6/4

r=1+1/2

<u>Equation #2</u>:

  • 5-y/3=-1

We move all terms to the left:

5-y/3-(-1)=0

We add all the numbers together, and all the variables

-y/3+6=0

We multiply all the terms by the denominator

-y+6*3=0

We add all the numbers together, and all the variables

-1y+18=0

We move all terms containing y to the left, all other terms to the right

-y=-18

y=-18/-1

y=+18

<u>Equation #3</u>:

Simplifying

42 = 5x + -8

Reorder the terms:

42 = -8 + 5x

Solving

42 = -8 + 5x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-5x' to each side of the equation.

42 + -5x = -8 + 5x + -5x

Combine like terms: 5x + -5x = 0

42 + -5x = -8 + 0

42 + -5x = -8

Add '-42' to each side of the equation.

42 + -42 + -5x = -8 + -42

Combine like terms: 42 + -42 = 0

0 + -5x = -8 + -42

-5x = -8 + -42

Combine like terms: -8 + -42 = -50

-5x = -50

Divide each side by '-5'.

x = 10

Simplifying

x = 10

NNADVOKAT [17]1 year ago
3 0

Step-by-step explanation:

hope it's beneficial.

Draw my attention for further explanations.✨✨

You might be interested in
Pls say fast :( its my online test
rodikova [14]

Answer:

840

Step-by-step explanation:

7, 14, 42, 168, ?

7 x 2 = 14

14 x 3 = 42

42 x 4 = 168

you see the pattern?
hence,

168 x 5 = 840 (ans)

7 0
2 years ago
Read 2 more answers
You can ignore a and b but can someone help me with c and d plz :)
katrin2010 [14]

Answer:

(below)

Step-by-step explanation:

c) the angles are in the interior on the same side of the transversal, making them supplementary

equation: 2x + 20 + 120=180 and then when solved you would get x =20

d) the angles are corresponding, which makes them congruent

equation: 3x + 10 = 100 and then when solved you would get x = 30

7 0
3 years ago
Read 2 more answers
Please help!!! Which system of inequality’s is shown below???!!! Use picture below to help you! ;)
irina1246 [14]

Answer:

b

Step-by-step explanation:

...

3 0
3 years ago
What is 5.23 divided by 9
maks197457 [2]
0.581 i used a calculator
7 0
3 years ago
Read 2 more answers
In 2010, a city's population was 1,405,233 and it was decreasing at a rate of 1.1%. At this rate when will the city's population
Kryger [21]
In 2010, a city's population was 1,405,233 and it was decreasing at a rate of 1.1%. At this rate when will the city's population fall below 1,200,000?
c. 2036
5 0
3 years ago
Read 2 more answers
Other questions:
  • Can someone help pls
    13·1 answer
  • A line that includes the points ( 1 , g ) and ( - 3 , - 2 ) has a slope of - 1. What is the value of g ?
    12·1 answer
  • Help please I have know idea
    5·2 answers
  • Assume that the readings on the thermometers are normally idistributed with a mean of 0◦ and a standard deviation of 1.00◦C. Fin
    12·1 answer
  • a triangle has an area of 32 square feet centimeters and a base of 8 centimeters. what is the width of the rectangle​
    11·1 answer
  • Triangle ABC has side length of 14, 8 and 10.4 what are the possible side lengths of a triangle DEF if ABC is similar to DEF
    10·1 answer
  • Novak hiked for 1¼ miles. After resting, he continued hiking for 2½ miles. How far did Novak hike?
    8·1 answer
  • A tree cast a shadow 45 feet long. At the same time, the shadow cast by a vertical 3 feet stick is 5 feet long. Find the height
    13·1 answer
  • 5
    8·1 answer
  • In a circle of radius 1, what is the length of an arc cut off by a central angle of 2 radians?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!