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
wariber [46]
4 years ago
13

-2a-9=6a+15 Idk how to this equation could someone plzz consider helping me?

Mathematics
1 answer:
ollegr [7]4 years ago
8 0

-2a-9=6a+15

Move 6a to the other side. Sign changs from +6a to -6a.

-2a-6a-9=6a-6a+15

-2a-6a-9=15

-8a-9=15

Move -9 to the other side. Sign changes from -9 to +9.

-8a-9+9=15+9

-8a=15+9

-8a=24

Divide both sides by -8

-8a/-8=24/-8

a=-3

Answer: a=-3

You might be interested in
Please Help....................................
serg [7]
4^3*4^4 / 4^6 = 4^7 / 4^9 = 1/4^2
answer is C. 1 / 4^2
3 0
4 years ago
Gina has $ 12,000 in investments, has an $ 800 outstanding credit card bill, owes $ 5600 on her car payment, and has $ 15,000 le
ElenaW [278]

Answer: $33,400 ✌️

A liability is anything you owe or any debt you have to pay back.

4 0
3 years ago
68x45 i dont have a calculater so pls awnser
navik [9.2K]

Answer:

3,060 yw

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
A rancher’s herd of 250 sheep grazes over a 40-acre pasture. He would like to find out how many sheep are grazing on each acre o
DerKrebs [107]
Given:250 sheep in a 40-acre pasture.Number of sheep grazing in each acre.
250/40 = 6.25 or 6 sheep per acre
n = 6sample proportion: signified by ρSample 1: 4 → 4/6 = 0.67Sample 2: 1 → 1/6 = 0.17Sample 3: 9 → 9/6 = 1.50
multiply the sample proportion by 1-ρSample 1: 0.67(1-0.67) = 0.67(0.33) = 0.2211Sample 2: 0.17(1-0.17) = 0.17(0.83) = 0.1411Sample 3: 1.50(1-1.5) = 1.5(-0.5) = -0.75
divide the result by n. n = 6Sample 1: 0.2211/6 = 0.03685Sample 2: 0.1411/6 = 0.02352Sample 3: -0.75/6 = -0.125
square root of the quotient to get the standard error.Sample 1: √0.03685 = 0.1919Sample 2: √0.02352 = 0.1534Sample 3: √-0.125 = invalid
z value 95% confidence 1.96.
Sample 1: 1.96 * 0.1919 = 0.3761 or 37.61% margin of errorSample 2: 1.96 * 0.1534 = 0.3007 or 30.07% margin of error
3 0
3 years ago
Rate•Time = Distance
Musya8 [376]

Answer:

2.5 km/h

Step-by-step explanation:

Here we have a distance problem where we are given the distance the time time:

Rate = ?

Time = 2hrs

Distance = 5km

The simplest way to do this is to rearrange the formula to suit our need and plug in the numbers:

R*T=D\\R*\frac{T}{T}=\frac{D}{T} \\R=\frac{D}{T}

Now, plug in the numbers and solve:

R=\frac{D}{T}\\R=\frac{5}{2} \\R=2.5

7 0
3 years ago
Other questions:
  • The world record for the 100 meter sprint is 9.77 seconds. How long would it take to run 1 meter at the speed
    11·1 answer
  • Kyle is pulled back on a swing so that the rope forms an angle of 30° with the vertical. The distance from the top of the swing
    13·1 answer
  • What is the equation of a line that is perpendicular to y=2x+4 and passes through the point (4,6)
    13·2 answers
  • The total cost of 8 binders is $24. The price of each binder is the same. Which equation represents the proportional relationshi
    5·1 answer
  • Use properties to find each product. <br><br> 2.6 x 1.4=<br><br> 4.5 x 0.08=
    15·1 answer
  • Part A The domain of a function is the set of all possible values and range of a function is a set of all possible values?​
    8·1 answer
  • What is the area (in square units) of the parallelogram formed by the points (0,0), (5,5), (4,2) and (1,3)?
    10·1 answer
  • Is 4 hours bigger than 14,400 seconds
    9·2 answers
  • Pls help
    14·2 answers
  • $300 to $200 is how much of an increase?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!