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Lera25 [3.4K]
3 years ago
9

A+ 2b = 10 2a + b =6

Mathematics
2 answers:
GenaCL600 [577]3 years ago
7 0
First you can solve for b: Subtract a on both sides and get 2b=-a+10, then divide by 2 to get b by itself and get: b=-1/2a+5

Then you can plug in this equation for b in the other: This would give you: 2a+-1/2a+5=6. Then you can use that equation to solve for a and get: 1.5a+5=6, subtract 5, 1.5a=1, divide by 1.5, a=1/1.5

Then you can plug in the value of a to solve for b.


Gennadij [26K]3 years ago
3 0

Answer:

A = 2/3

B = 14/3

Step-by-step explanation:

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−9x (5x+4 ) +10 (x+3) can someone please solve his for me thank u step by step please i really need to find out how to do it
Ivahew [28]

Answer:

-45x^{2}-26x+30

Step-by-step explanation:

So first you let's divide this equation into three parts.

Part one -9x(5x+4)

  1. Step one: you have to distribute the -9x to the numbers in the parentheses. That would leave us with a -9x*5x = -45x^{2} and -9x*4 = -36x
  2. Step two: Put the answers together. That would leave us with -45x^{2}-36x.

Part two 10(x+3)

  1. Step one: you have to distribute the 10 to the numbers in the parentheses. That would leave us with a 10*x = 10x and 10*3 = 30
  2. Step two: Put the answers together. That would leave us with 10x+30

Part three solve

  1. Step one: combine and put together what you have solved for. That would leave us with a -45x^{2}-36x+ 10x+30
  2. Step two: combine like terms. The like terms here are -36x and 10x. When you combine them you would get -26x.
  3. Step three: Write the equation in standard form. Therefore the answer is -45x^{2}-26x+30.

Let me know if anything is confusing!

5 0
3 years ago
Convert 8 1/2 to an improper fraction
mojhsa [17]

Answer: 17/2

Step-by-step explanation:

Step 1

Multiply the denominator by the whole number

2 × 8 = 16

Step 2

Add the answer from Step 1 to the numerator

16 + 1 = 17

Step 3

Write answer from Step 2 over the denominator

17/2

=172

7 0
3 years ago
The equations = p - 0.15p represents the sale price a of an item with an original price p, after a 15% discount. Make a table to
MariettaO [177]
12-0.15×12=$10.2
16-0.15×16=$13.6
20-0.15×20=$17
25-0.15×25=$21.25
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Elanso [62]
20 to 30 is a 10% increase
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Vadim26 [7]

Answer:

A. budget

Step-by-step explanation:

3 0
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