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
Illusion [34]
3 years ago
13

I’m having a hard time understanding substitution. Please help!

Mathematics
1 answer:
Vikentia [17]3 years ago
3 0

b_1=\frac{2A}{h}-b_2

Step-by-step explanation:

Given expression is;

A=\frac{h(b_1+b_2)}{2}

Solving for b_1

Multiplying both sides by 2

2*A=\frac{h(b_1+b_2)}{2}*2\\2A=h(b_1+b_2)

Dividing both sides by h

\frac{2A}{h}=\frac{h(b_1+b_2)}{h}\\\frac{2A}{h}=b_1+b_2

Subtracting b_2 from both sides

\frac{2A}{h}-b_2=b_1+b_2-b_2\\\frac{2A}{h}-b_2=b_1\\b_1=\frac{2A}{h}-b_2

b_1=\frac{2A}{h}-b_2

Keywords: division, subtraction

Learn more about subtraction at:

  • brainly.com/question/11145277
  • brainly.com/question/11150876

#LearnwithBrainly

You might be interested in
When Marla rounded 19.95 to the nearest tenth, she found the number changed to 20.is this correct
dexar [7]
Yes, Marla is correct.
4 0
3 years ago
What is the intercept to this graph, please??
velikii [3]

Answer:

there is no intercept

Step-by-step explanation:

5 0
3 years ago
Please help me with this question!! TRIGONOMETRY
Gelneren [198K]
<h3>Answer: B) 17.4</h3>

Work Shown:

sin(angle) = opposite/hypotenuse

sin(35) = 10/x

x*sin(35) = 10

x = 10/sin(35)

x = 17.434467956211 make sure your calculator is in degree mode

x = 17.4

4 0
3 years ago
Read 2 more answers
two points on the line are (-10,1) and (5,-5).if the coordinate of another point on the line is -3,what is the x-coordinate?​
zlopas [31]

Answer:

x-coordinate = 0

Step-by-step explanation:

(-10,1) , (5,-5)

m = (y₂ - y₁)/(x₂ - x₁) = ( -5 - 1 ) / ( 5 - [-10] )

   = -6 / ( 5 + 10)

    = -6/15 = -2/5

y - y₁  = m (x - x₁)

y - 1 = (-2/5) ( x - [-10] )

y - 1 = (-2/5) ( x + 10 )

5 * (y -1)  = -2 (x + 10)

5y - 5 = -2x -20

2x + 20 + 5y  -5 = 0

2x + 5y + 15 = 0

Another point (a, -3) in on this line

2 * a + 5 * (-3) = -15

          2a -15    = -15

                  2a  = -15 +15

                 2a =  0

                    a = 0

x-coordinate = 0

6 0
3 years ago
The flow of water from a faucet can fill a
mash [69]

Answer:

3/18 gallons/seconds, or 1/6 gallons/seconds

Step-by-step explanation:

We know that for every 3 gallons, the faucet fills that amount up in 18 seconds. Another way we can write that is "3 gallons for 18 seconds", or 3 gallons / 18 seconds.

Therefore, in terms of gallons to seconds, we can write this as 3 gallons/18 seconds.

One cool thing we can do with fractions is that if we multiply/divide the numerator by the same thing, the fraction is still the same amount, like if we divided by one. For example, if we multiply 1/10 by 10/10 = 1, we would get 10/100 = 1/10, changing the numbers but still keeping the fraction intact. We can apply this concept here to reduce the fraction.

Reducing the fraction means that we want to make the numerator and denominator as small as possible while still keeping them as integers. This means that, if possible, we should divide both the numerator and denominator by their greatest common factor (if it is greater than 1).

To find the greatest common factor, we can list factors and find the greatest one among them.

We have two numbers, 3 and 18.

The factors of 3 are 1 and 3 while the factors of 18 are 1, 2, 3, 6, 9, and 18. The greatest common number among these two is 3. Therefore, we can divide both these numbers by 3 to get

3/18 = 1/6 gallons/seconds as our answer

8 0
3 years ago
Other questions:
  • Matter is anything that
    11·2 answers
  • What is the ratio 8 to 72 expressed as a fraction in simplest form?
    15·2 answers
  • The area of a square garden is 128m sqared.how long is the diagonal
    6·2 answers
  • ((-2^2)(-1^-3))•((-2^-3)(-1^5))^-2
    10·1 answer
  • What is the slope of the line represented by the equation 6y-14x=5
    7·1 answer
  • Create a system of linear inequalities (2 inequalities), that meet the following criteria. One of the linear inequalities must g
    15·1 answer
  • Anthony read 46 pages of a book in 23 minutes.
    9·2 answers
  • Jose is raising money for a school trip by selling lollipops and packs of cookies. The price of each lollipop is $1 and the pric
    14·1 answer
  • What is 6*56577467577467475
    13·2 answers
  • Simplify<br> −<br> 2<br> x<br> ×<br> 3<br> x<br> ×<br> −<br> x
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!