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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

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37 is ____ % of 148; 148 is ____ % of 37 fill in the blanks
soldier1979 [14.2K]

37 is 25% of 148; 148 is 400% of 37

Step-by-step explanation:

Let us solve the questions one by one

"37 is ____ % of 148"

Let x be the percentage

Then

37 = x\%\ of\ 148\\37 = 148x\\x = \frac{37}{148}\\x = 0.25

to convert in percentage, multiplying by 100

= 25%

"148 is ____ % of 37"

Let y be the percentage

then

148 = y\%\ of\ 37\\148 = 37y\\y = \frac{148}{37}\\y = 4

To convert into percentage, multiplying by 100

= 400%

Hence,

37 is 25% of 148; 148 is 400% of 37

Keywords: Percentage, percent

Learn more about percentage at:

  • brainly.com/question/7932185
  • brainly.com/question/788903

#LearnwithBrainly

4 0
3 years ago
What is the name of this triangle
Sonja [21]

Answer:

right triangle

Step-by-step explanation:has a right angle

3 0
2 years ago
Read 2 more answers
What are the steps to this equation to -2x-4+5x=8
laila [671]

Answer:

x = 4

Explanation:

−2x − 4 + 5x = 8

[ Simplify both sides of the equation ]

−2x − 4 + 5x = 8

−2x + −4 + 5x = 8

(−2x + 5x) + (−4) = 8 (Combine Like Terms)

3x + −4 = 8

3x − 4 = 8

[ Add 4 to both sides ]

3x − 4 + 4 = 8 + 4

3x = 12

[ Divide both sides by 3 ]

3x / 3 = 12 / 3

x = 4

- PNW

6 0
2 years ago
Read 2 more answers
Please help a brotha out
Zina [86]

Answer: a=1,b=1

Step-by-step explanation:

b

7 0
3 years ago
If the area of a shape is 50 square feet and the width is 10 feet, what is the lentgth
Rus_ich [418]

Answer:

5 feet

Step-by-step explanation:

To find the length of the shape, we can divide the area to the width.

Formula for area is [ a = lw ].

Since we are solving for length, the formula will be [ l = a/w ]

l = 50/10

l = 5

Best of Luck!

6 0
3 years ago
Read 2 more answers
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