What is -2x-7=3(4x+7)
Answers
Answer:
x= -2
Step-by-step explanation:
sorry dont read this
Answer:
x= -2
Step-by-step explanation:
-2x-7=3(4x+7)
multiply numbers in parenthesis by 3
-2x-7=12x+21
move terms
-2x-12x=21+7
subtract -2x to -12x but since there negative the equation is addition. Also, add 21 to 7
-14x=28
divide both sides by -14
x= -2
Related Questions
How many triangles are in a octagon?
5,000 is 10 times as much as
Rachael’s backyard swimming pool is being emptied by a pump. The amount of water in the pool W in gallons at any time t in hours is given by the following equation: W = 9,000 – 250t. How many gallons of water are being pumped out each hour?
Antwaun waters his lawn 3 times a week he wanted his lawn 24 times in all write an equation that could be used to find how many weeks he has been watering his lawn
Part B)Applications to the university from boys represented 40Percent of all applications. How many applications did the university receive In all?
I don't how to do part b so please help me and plz tell how you got your answer
Answers
Part A) 1246 applications were received from other sides.
Part B) The university received a total of 8900 applications.
What is the percentage?
A percentage is a value per hundredth. Percentages can be converted into decimals and fractions by dividing the percentage value by a hundred.
Given, Last Year, a state university received 3,560 applications from boys. Of those applications, 35 Percent were from boys who lived in other states.
Assuming x no. of boys live in other states.
So, 35% of 3560 is x.
∴ (35/100)×3560 = x.
x = 0.35×3560.
x = 1246.
1246 applications were received from other sides.
Now, The university received 40% of the applications from boys, Assuming the total no. of applications to be y.
∴ 40% of y is 3560.
So, (40/100)y = 3560.
0.40y = 3560.
y = 3560/0.40.
y = 8900
The university received a total of 8900 applications.
Learn more about percentages here :
#SPJ2
5%=356/2=178
30%=356X3=1068
35%=1068+178=1246
b)10% of 40%=3560/4=890
100%890x10=8900(answer)
hope this helps
to run 9 miles on Tuesday and 12 miles on
Thursday. How many minutes longer will her
run be on Thursday compared to Tuesday?
Answers
Answer: 33.33 minutes longer.
Step-by-step explanation :
We need to remember the following formula:
Where "t" is the time, "d" is the distance and "V" is the speed.
We know that she runs approximately 5.4 miles per hour, then:
Since she plans to run 9 miles on Tuesday, her run's time on Tuesday will be:
Making the conversion from hours to minutes, we get:
Since she plans to run 12 miles on Thursday, her run's time on that day will be:
Making the conversion from hours to minutes, we get:
Finally in order to find how many longer will her run be on Thursday compared to Tuesday, we need to make the following subtraction:
B. 126
C. 15,120
D . 59,049
A cooking club has 12 members.How many ways can they select a president and vice president from among the members?
A. 1320
B. 220
C. 132
D. 66
Answers
C) 15120
C) 132.
Explanation:
9P5 is a permutation of 9 objects taken 5 at a time; this is
9! / (9-5)! = 9!/4!
= (9*8*7*6*5*4*3*2*1)/(4*3*2*1)
= 15120.
The second question is a permutation of 12 objects taken 2 at a time; this is 12! / (12-2)! = 12!/10!
=(12*11*10*9*8*7*6*5*4*3*2*1) / (10*9*8*7*6*5*4*3*2*1)
=132
9P5 is a permutation of 9 objects taken 5 at a time; this is ⁹P₅ = 15120. So, the correct option is C.
A permutation of 12 objects taken 2 at a time; this is 132 ways can they select a president and vice president from among the members. So, the correct option is C.
Given:
9P5 is a permutation of 9 objects taken 5 at a time; this is
9! / (9-5)! = 9!/4!
= (9*8*7*6*5*4*3*2*1)/(4*3*2*1)
= 15120.
A permutation of 12 objects taken 2 at a time; this is 12! / (12-2)! = 12!/10!
=(12*11*10*9*8*7*6*5*4*3*2*1) / (10*9*8*7*6*5*4*3*2*1)
=132
Therefore, the cooking club has 12 members. there are 132 ways can they select a president and vice president from among the members
Learn more about permutation here:
#SPJ6
Answers
+837
2837
837 plus 2000 is equal to 2837
2877
837 + 2000 =2877
Answers
Answer:
Step-by-step explanation:
its D
Answers
Answer:
d = 8t
Step-by-step explanation:
d = r*t where d is the distance, r is the rate and t is the time
We can travel at 8 miles an hour
d = 8t
Answer:
d=8t
Step-by-step explanation: