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
vlada-n [284]
3 years ago
5

8 + 8r = 3 + 3r can anyone can help me out​

Mathematics
2 answers:
MAVERICK [17]3 years ago
6 0

Answer:r = -1

Step-by-step explanation:

8+8r-(3+3r)=0

We add all the numbers together, and all the variables

8r-(3r+3)+8=0

We get rid of parentheses

8r-3r-3+8=0

We add all the numbers together, and all the variables

5r+5=0

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

5r=-5

r=-5/5

r=-1

Hope this helps

VARVARA [1.3K]3 years ago
6 0
8 + 8r = 3 + 3r
-3r -3r
————————
8 + 5r = 3
-8 -8
—————-
5r = -5
— —-
5 5
——————-
1r = 1



Hope this helped :D
You might be interested in
Express 0.57 in the form p where p and q are integers o and q # 0
lbvjy [14]

Answer:

57/100

Step-by-step explanation: 0.57 can also be written as 57/100 which is equal to 0.57

6 0
2 years ago
Natalie walk 3/5 mile and a 1/2 hour . how fast did she walk in in miles per hour?
Talja [164]
She walks 6/5 of a mile in 1 hour

So, she walks 1.2 miles per hour
7 0
3 years ago
Find the value of y.
Natali [406]

Answer:

y=7

Step-by-step explanation:

The two given angels are congruent so they must be equal in measure.

Set them up equal and find y.

8y = 5y + 21, subtract 5y from both sides

8y -5y = 21, combine like terms

3y = 21, divide both sides by 3

y = 7

7 0
2 years ago
The marketing club at school is opening a student store. They randomly survey 50 students about how much money they spend on lun
Luden [163]

Answer:

The expected value for a student to spend on lunch each day = $5.18

Step-by-step explanation:

Given the data:

Number of students______$ spent

2 students______________$10

1 student________________$8

12 students______________$6

23 students______________$5

8 students_______________$4

4 students_______________$3

Sample size, n = 50.

Let's first find the value on each amount spent with the formula:

\frac{num. of students}{sample size} * dollar spent

Therefore,

For $10:

\frac{2}{50} * 10 = 0.4

For $8:

\frac{1}{50} * 8 = 0.16 l

For $6:

\frac{12}{50} * 6 = 1.44

For $5:

\frac{23}{50} * 5 = 2.3

For $4:

\frac{8}{50} * 4 = 0.64

For $3:

\frac{4}{50} * 3 = 0.24

To find the expected value a student spends on lunch each day, let's add all the values together.

Expected value =

$0.4 + $0.16 + 1.44 +$2.3 + $0.64 + $0.24

= $5.18

Therefore, the expected value for a student to spend on lunch each day is $5.18

7 0
2 years ago
How would you do this problem?
sweet [91]
F(x)=-5t^2+20t+60
Divide everything by -5
f(x)=t^2-4t-12
(t-6)(t+2)
Set it up to zero
t-6=0. t+2=0
t=6. t=-2
Since you can’t have negative seconds, the answer is 6 seconds
3 0
3 years ago
Read 2 more answers
Other questions:
  • In two or more complete sentences, describe how to find the interval(s) where the function is increasing and how interval notati
    15·1 answer
  • Please helpppppp, I’m tryna passss :(
    7·1 answer
  • Which represents the solution set of 5(x+5)<85
    6·2 answers
  • What is the y intercept if the slope=-2
    5·2 answers
  • Which of the following reasons complete the proof in the picture below
    15·1 answer
  • What is the common ratio for the sequence 1, 4, 16, 64,...? <br>1/4<br>1/2<br>2<br>4​
    11·2 answers
  • Andres used 3 pears and 9 apples to make a fruit salad. What ratio represents the number of pears to the number of apples in the
    13·2 answers
  • Which expression is equivalent to 6 x p +3
    5·2 answers
  • A store had a 20% off
    5·1 answer
  • Which expression represents half of a number,n,plus 3?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!