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nata0808 [166]
3 years ago
9

12ab = 4 solve for a

Mathematics
2 answers:
WITCHER [35]3 years ago
8 0

Answer:

-3

Step-by-step explanation:

Levart [38]3 years ago
6 0
12ab=4
ab=4/12
ab=.3
a=.3/b
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Describe the difference between algebraic expressions and numerical expressions.
Mila [183]
The difference between an algebraic expression and a numerical expression is that algebraic expressions contain numbers and variables. Numerical expressions only contain numbers. 

Ex:
Algebraic Expression- 5x+9
Numerical Expression- 4+2
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3 years ago
A car is merging onto a freeway (beginning at rest), accelerating at a constant rate of 10ft/sec2. How long does it take to reac
masha68 [24]

Answer:

<h2>10.3seconds</h2>

Step-by-step explanation:

Step one:

given data

acceleration,a= 10ft/sec^2

final velocity v= 70mph

first, let is convert mph to ft/sec

1mph is 1.46667 ft/sec

70 mph is x

cross multiply we have

x= 102.7ft/s

Step two:

we are using the first equation of motion

v=u+at

initial velocity u= 0m/s

102.7=0+10*t

102.7=10t

divide both sides by 10

t=10.3seconds

5 0
3 years ago
Determine if the given order pair si a solution to the equation. Show work...
lozanna [386]

The given ordered pair is not the solution to the equation

Step-by-step explanation:

In order to find if an ordered pair is a solution to the equation or not, we plug in the values of x and y in the equation. If the equation is true for the point then the ordered pair is the solution to the equation.

Given equation is:

y = -3x-13

Putting x=-1, y=15

15 = -3(-1)-13\\15 = 3-13\\15 \neq -10

The given ordered pair is not the solution to the equation

Keywords: Equations, ordered pairs

Learn more about linear equations at:

  • brainly.com/question/2670657
  • brainly.com/question/2821386

#LearnwithBrainly

5 0
3 years ago
Help me find the surface area plz and tell me how you got this
podryga [215]
All you have to do is find the area of all the shapes and add them so length times height besides the triangle which is 1/2(l*h)
8 0
3 years ago
Read 2 more answers
Joesfina works between 10 and 30 hours per week at a pizzeria. She earns $8.50 an hour, but can earn tips when she delivers pizz
Sergeu [11.5K]

Answer:

85 + z <= x <= 255 + z

Step-by-step explanation:

An inequality system will be given by a lower limit and an upper limit, therefore it is only necessary to raise an equation for each case, h being the hours worked and z the extra money you can earn by delivering the pizzas:

For the lower limit:

8.5 * h + z, knowing that in this case it is 10 hours.

85 + z would be the lower limit value

For the upper limit:

8.5 * h + z, knowing that in this case it is 30 hours.

225 + z would be the upper limit value

Therefore the inequality system would be as follows, let x be the money earned:

85 + z <= x <= 255 + z

Which means that the money earned will be determined by the previous inequality.

6 0
3 years ago
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