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
Anna11 [10]
3 years ago
11

Solve 7x - 4 = 5x + 15 for x.

Mathematics
1 answer:
Law Incorporation [45]3 years ago
8 0
7x-4=5x+15
-5x on both sides
2x-4=15
add four to both sides
2x=19
divide both sides by 2 to isolate x
x=9.5
You might be interested in
What does x equal 3.2x = 64
enyata [817]
64/3.2 = 20
The answer is 20

- Your welcome
3 0
3 years ago
Read 2 more answers
You are parasailing for the first time. The rope that connects you to the boat is 38 feet long. The distance along the water bet
Xelga [282]

Answer:

About 30.98386677 ft above the water.

Step-by-step explanation:

Use pythagorean theorem, a^2+b^2=c^2.

So when you plug in the numbers it would be x^2+22^2=38^2. Move 22^2 to the right side giving you x^2=38^2-22^2. Then subtract and take the square root of x^2.

5 0
2 years ago
Find the unit rate. 21 3/4 meters in 2 1/2 hours
anyanavicka [17]
(21 3/4) / (2 1/2) =
(87/4) / (5/2) =
87/4 * 2/5 =
174/20 reduces to 8 7/10 (or 8.7)meters per hr
6 0
3 years ago
30 points<br> can somebody please help me<br> question below
Inessa05 [86]

Find the total number of dogs by adding each day:

Total dogs = 23

Percent of dogs: Divide the number of dogs by the total number of patients:

= 23 / 50 = 0.46 x 100 = 46%

Use the given formula to find the standard error:

Standard error = √(0.46*(1-0.46)/50) = 0.07

90%: Find Z value for 90% ( 1.645) multiply by SE:

1.645 x 0.07 = 0.115 = 0.12

Now add and subtract that value from the Percent from above:

46 + 12 = 58%

46-12 = 34%

Answer (34%, 58%)

95%: Find Z value for 95% ( 1.96) multiply by SE:

1.96 x 0.07 = 0.137 = 0.14

Now add and subtract that value from the Percent from above:

46 + 14 = 60%

46-14 = 32%

Answer (32%, 60%)

5 0
3 years ago
There is a 60% chance that your flight will leave on time
OLEGan [10]
A 40% chance





Unless!
*wispers*
It’s a trick question?
6 0
3 years ago
Read 2 more answers
Other questions:
  • The Garcia family and the Lee family each used their sprinklers last summer. The Garcia family's sprinkler was used for 40  hour
    13·1 answer
  • The diagram below shows a pair of congruent traingles, with . Which statement must be true?
    13·1 answer
  • What is the area of this figure
    11·1 answer
  • What is the answer to 2[n+6]=80
    11·2 answers
  • Justin is considering two websites for downloading music.The costs are detailed here.
    13·1 answer
  • 2.4cm and 6.5cm what is the length of this equation
    9·1 answer
  • If Julius wants to have $1,500,000 when he retires in 20 years. How much money would
    13·1 answer
  • 1/2 book per day <br> Y=1/2x <br> Is this correct? Explain.
    8·1 answer
  • 10 millimeters<br> 1 centimeter<br> 230 millimeters<br> x centimeters
    15·1 answer
  • 6. A long-distance runner travels a distance of 108 km in 8 hours. <br> What is his average speed?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!